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Tu B, Cao N, Zhang B, Zheng W, Li J, Tang X, Su K, Li J, Zhang Z, Yan Z, Li D, Zheng X, Zhang K, Hong WD, Wu P. Synthesis and Biological Evaluation of Novel Fusidic Acid Derivatives as Two-in-One Agent with Potent Antibacterial and Anti-Inflammatory Activity. Antibiotics (Basel) 2022; 11:antibiotics11081026. [PMID: 36009895 PMCID: PMC9405029 DOI: 10.3390/antibiotics11081026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 07/24/2022] [Accepted: 07/28/2022] [Indexed: 12/10/2022] Open
Abstract
Fusidic acid (FA), a narrow-spectrum antibiotics, is highly sensitive to various Gram-positive cocci associated with skin infections. It has outstanding antibacterial effects against certain Gram-positive bacteria whilst no cross-resistance with other antibiotics. Two series of FA derivatives were synthesized and their antibacterial activities were tested. A new aromatic side-chain analog, FA-15 exhibited good antibacterial activity with MIC values in the range of 0.781–1.563 µM against three strains of Staphylococcus spp. Furthermore, through the assessment by the kinetic assay, similar characteristics of bacteriostasis by FA and its aromatic derivatives were observed. In addition, anti-inflammatory activities of FA and its aromatic derivatives were evaluated by using a 12-O-tetradecanoylphorbol-13-acetate (TPA) induced mouse ear edema model. The results also indicated that FA and its aromatic derivatives effectively reduced TPA-induced ear edema in a dose-dependent manner. Following, multiform computerized simulation, including homology modeling, molecular docking, molecular dynamic simulation and QSAR was conducted to clarify the mechanism and regularity of activities. Overall, the present work gave vital clues about structural modifications and has profound significance in deeply scouting for bioactive potentials of FA and its derivatives.
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Affiliation(s)
- Borong Tu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China; (B.T.); (N.C.); (W.Z.); (J.L.); (X.T.); (K.S.); (J.L.); (Z.Z.); (Z.Y.); (D.L.); (X.Z.)
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
| | - Nana Cao
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China; (B.T.); (N.C.); (W.Z.); (J.L.); (X.T.); (K.S.); (J.L.); (Z.Z.); (Z.Y.); (D.L.); (X.Z.)
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
| | - Bingjie Zhang
- School of Biomedicine and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China;
| | - Wende Zheng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China; (B.T.); (N.C.); (W.Z.); (J.L.); (X.T.); (K.S.); (J.L.); (Z.Z.); (Z.Y.); (D.L.); (X.Z.)
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
| | - Jiahao Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China; (B.T.); (N.C.); (W.Z.); (J.L.); (X.T.); (K.S.); (J.L.); (Z.Z.); (Z.Y.); (D.L.); (X.Z.)
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
| | - Xiaowen Tang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China; (B.T.); (N.C.); (W.Z.); (J.L.); (X.T.); (K.S.); (J.L.); (Z.Z.); (Z.Y.); (D.L.); (X.Z.)
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
| | - Kaize Su
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China; (B.T.); (N.C.); (W.Z.); (J.L.); (X.T.); (K.S.); (J.L.); (Z.Z.); (Z.Y.); (D.L.); (X.Z.)
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
| | - Jinxuan Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China; (B.T.); (N.C.); (W.Z.); (J.L.); (X.T.); (K.S.); (J.L.); (Z.Z.); (Z.Y.); (D.L.); (X.Z.)
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
| | - Zhen Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China; (B.T.); (N.C.); (W.Z.); (J.L.); (X.T.); (K.S.); (J.L.); (Z.Z.); (Z.Y.); (D.L.); (X.Z.)
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
| | - Zhenping Yan
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China; (B.T.); (N.C.); (W.Z.); (J.L.); (X.T.); (K.S.); (J.L.); (Z.Z.); (Z.Y.); (D.L.); (X.Z.)
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
| | - Dongli Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China; (B.T.); (N.C.); (W.Z.); (J.L.); (X.T.); (K.S.); (J.L.); (Z.Z.); (Z.Y.); (D.L.); (X.Z.)
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
| | - Xi Zheng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China; (B.T.); (N.C.); (W.Z.); (J.L.); (X.T.); (K.S.); (J.L.); (Z.Z.); (Z.Y.); (D.L.); (X.Z.)
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
| | - Kun Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China; (B.T.); (N.C.); (W.Z.); (J.L.); (X.T.); (K.S.); (J.L.); (Z.Z.); (Z.Y.); (D.L.); (X.Z.)
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
- School of Biomedicine and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China;
- Correspondence: (K.Z.); (W.D.H.); (P.W.); Tel.: +86-13822330019 (K.Z.); +44-7863354263 (W.D.H.); +86-18825179347 (P.W.)
| | - Weiqian David Hong
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China; (B.T.); (N.C.); (W.Z.); (J.L.); (X.T.); (K.S.); (J.L.); (Z.Z.); (Z.Y.); (D.L.); (X.Z.)
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, UK
- Correspondence: (K.Z.); (W.D.H.); (P.W.); Tel.: +86-13822330019 (K.Z.); +44-7863354263 (W.D.H.); +86-18825179347 (P.W.)
| | - Panpan Wu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China; (B.T.); (N.C.); (W.Z.); (J.L.); (X.T.); (K.S.); (J.L.); (Z.Z.); (Z.Y.); (D.L.); (X.Z.)
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529040, China
- School of Biomedicine and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China;
- Correspondence: (K.Z.); (W.D.H.); (P.W.); Tel.: +86-13822330019 (K.Z.); +44-7863354263 (W.D.H.); +86-18825179347 (P.W.)
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Motealleh A, Kehr NS. Step‐Gradient Composite Hydrogels for Local Drug Delivery and Directed Cell Migration. ADVANCED NANOBIOMED RESEARCH 2021. [DOI: 10.1002/anbr.202000114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Andisheh Motealleh
- Physikalisches Institute and Center for Soft Nanoscience Westfälische Wilhelms-Universität Münster Busso-Peus-Strasse 10 Münster 48149 Germany
| | - Nermin S. Kehr
- Physikalisches Institute and Center for Soft Nanoscience Westfälische Wilhelms-Universität Münster Busso-Peus-Strasse 10 Münster 48149 Germany
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Motealleh A, Dorri P, Czieborowski M, Philipp B, Kehr NS. Bifunctional nanomaterials for simultaneously improving cell adhesion and affecting bacterial biofilm formation on silicon-based surfaces. Biomed Mater 2021; 16:025013. [PMID: 33401259 DOI: 10.1088/1748-605x/abd872] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In the biomedical field, silicon-based materials are widely used as implants, biomedical devices, and drug delivery systems. Although these materials show promise for implant technologies and clinical applications, many of them fail to simultaneously possess key properties, such as mechanical stability, biostability, stretchability, cell adhesiveness, biofilm inhibition, and drug delivery ability. Therefore, there is considerable need for the development and improvement of new biomaterials with improved properties. In this context, we describe the synthesis of a new hybrid nanocomposite material that is prepared by incorporating bifunctional nanomaterials onto glass and polydimethylsiloxane surfaces. The results show that our hybrid nanocomposite material is elastic, stretchable, injectable, biostable, has pH-controlled drug delivery ability, and display improved cell adhesion and proliferation and, at the same time, impacted bacterial biofilm formation on the respective surfaces.
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Affiliation(s)
- Andisheh Motealleh
- Physikalisches Institute and Center for Soft Nanoscience, Westfälische Wilhelms-Universität Münster, Busse-Peus-Strasse 10, 48149 Münster, Germany
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Blumenthal I, Davis LR, Berman CM, Griswold KE. Nonclassical antagonism between human lysozyme and AMPs against Pseudomonas aeruginosa. FEBS Open Bio 2021; 11:705-713. [PMID: 33480189 PMCID: PMC7931236 DOI: 10.1002/2211-5463.13094] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/25/2020] [Accepted: 01/14/2021] [Indexed: 12/28/2022] Open
Abstract
Combinations of human lysozyme (hLYS) and antimicrobial peptides (AMPs) are known to exhibit either additive or synergistic activity, and as a result, they have therapeutic potential for persistent and antibiotic‐resistant infections. We examined hLYS activity against Pseudomonas aeruginosa when combined with six different AMPs. In contrast to prior reports, we discovered that some therapeutically relevant AMPs manifest striking antagonistic interactions with hLYS across particular concentration ranges. We further found that the synthetic AMP Tet009 can inhibit hLYS‐mediated bacterial lysis. To the best of our knowledge, these results represent the first observations of antagonism between hLYS and AMPs, and they advise that future development of lytic enzyme and AMP combination therapies considers the potential for antagonistic interactions.
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Affiliation(s)
- Ian Blumenthal
- Thayer School of Engineering, Dartmouth, Hanover, NH, USA
| | - Lydia R Davis
- Thayer School of Engineering, Dartmouth, Hanover, NH, USA
| | - Chet M Berman
- Thayer School of Engineering, Dartmouth, Hanover, NH, USA
| | - Karl E Griswold
- Thayer School of Engineering, Dartmouth, Hanover, NH, USA.,Lyticon LLC, Lebanon, NH, USA
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Motealleh A, Kehr NS. Directed vertical cell migration via bifunctionalized nanomaterials in 3D step-gradient nanocomposite hydrogels. Biomater Sci 2020; 8:5628-5637. [DOI: 10.1039/d0bm01133a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Step-gradient scaffolds promote healthy cell migration, while inhibit the migration of cancerous cells in the XZ plane of the 2GradNS.
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Affiliation(s)
- Andisheh Motealleh
- Physikalisches Institute and Center for Soft Nanoscience
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
| | - Nermin S. Kehr
- Physikalisches Institute and Center for Soft Nanoscience
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
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Coyne CP, Narayanan L. Carnosic Acid, Tangeretin, and Ginkgolide-B Anti-neoplastic Cytotoxicity in Dual Combination with Dexamethasone-[anti-EGFR] in Pulmonary Adenocarcinoma (A549). Anticancer Agents Med Chem 2019; 19:802-819. [DOI: 10.2174/1871520619666181204100226] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 06/06/2018] [Accepted: 10/08/2018] [Indexed: 12/18/2022]
Abstract
Background:Traditional chemotherapeutics of low-molecular weight diffuse passively across intact membrane structures of normal healthy cells found in tissues and organ systems in a non-specific unrestricted manner which largely accounts for the induction of most sequelae which restrict dosage, administration frequency, and duration of therapeutic intervention. Molecular strategies that offer enhanced levels of potency, greater efficacy and broader margins-of-safety include the discovery of alternative candidate therapeutics and development of methodologies capable of mediating properties of selective “targeted” delivery.Materials and Methods:The covalent immunopharmaceutical, dexamethasone-(C21-phosphoramidate)-[anti- EGFR] was synthesized utilizing organic chemistry reactions that comprised a multi-stage synthesis regimen. Multiple forms of analysis were implemented to vadliate the successful synthesis (UV spectrophotometric absorbance), purity and molar-incorporation-index (UV spectrophotometric absorbance, chemical-based protein determination), absence of fragmentation/polymerization (SDS-PAGE/chemiluminescent autoradiography), retained selective binding-avidity of IgG-immunoglobulin (cell-ELISA); and selectively “targeted” antineoplastic cytotoxicity (biochemistry-based cell vitality/viability assay).Results:The botanicals carnosic acid, ginkgolide-B and tangeretin, each individually exerted maximum antineoplastic cytotoxicity levels of 58.1%, 5.3%, and 41.1% respectively against pulmonary adenocarcinoma (A549) populations. Dexamethasone-(C21-phosphoramidate)-[anti-EGFR] formulated at corticosteroid/ glucocorticoid equivalent concentrations produced anti-neoplastic cytotoxicity at levels of 7.7% (10-9 M), 26.9% (10-8 M), 64.9% (10-7 M), 69.9% (10-6 M) and 73.0% (10-5 M). Ccarnosic acid, ginkgolide-B and tangeretin in simultaneous dual-combination with dexamethasone-(C21-phosphoramidate)-[anti-EGFR] exerted maximum anti-neoplastic cytotoxicity levels of 70.5%, 58.6%, and 69.7% respectively.Discussion:Carnosic acid, ginkgolide-B and tangeretin botanicals exerted anti-neoplastic cytotoxicity against pulmonary adenocarcinoma (A549) which additively contributed to the anti-neoplastic cytotoxic potency of the covalent immunopharmaceutical, dexamethasone-(C21-phosphoramidate)-[anti-EGFR]. Carnosic acid and tangeretin were most potent in this regard both individually and in dual-combination with dexamethasone-(C21- phosphoramidate)-[anti-EGFR]. Advantages and attributes of carnosic acid and tangeretin as potential monotherapeutics are a wider margin-of-safety of conventional chemotherapeutics which would readily complement the selective “targeted” delivery properties of dexamethasone-(C21-phosphoramidate)-[anti-EGFR] and possibly other covalent immunopharmaceuticals in addition to providing opportunities for the discovery of combination therapies that provide heightened levels of anti-neoplastic efficacy.
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Affiliation(s)
- Cody P. Coyne
- Department of Basic Sciences, College of Veterinary Medicine at Wise Center, Mississippi State University, Mississippi 39762, United States
| | - Lakshmi Narayanan
- Department of Basic Sciences, College of Veterinary Medicine at Wise Center, Mississippi State University, Mississippi 39762, United States
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Coyne CP, Narayanan L. Dexamethasone-(C21-phosphoramide)-[anti-EGFR]: molecular design, synthetic organic chemistry reactions, and antineoplastic cytotoxic potency against pulmonary adenocarcinoma (A549). Drug Des Devel Ther 2016; 10:2575-97. [PMID: 27574398 PMCID: PMC4990379 DOI: 10.2147/dddt.s102075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
PURPOSE Corticosteroids are effective in the management of a variety of disease states, such as several forms of neoplasia (leukemia and lymphoma), autoimmune conditions, and severe inflammatory responses. Molecular strategies that selectively "target" delivery of corticosteroids minimize or prevents large amounts of the pharmaceutical moiety from passively diffusing into normal healthy cell populations residing within tissues and organ systems. MATERIALS AND METHODS The covalent immunopharmaceutical, dexamethasone-(C21-phosphoramide)-[anti-EGFR] was synthesized by reacting dexamethasone-21-monophosphate with a carbodiimide reagent to form a dexamethasone phosphate carbodiimide ester that was subsequently reacted with imidazole to create an amine-reactive dexamethasone-(C21-phosphorylimidazolide) intermediate. Monoclonal anti-EGFR immunoglobulin was combined with the amine-reactive dexamethasone-(C21-phosphorylimidazolide) intermediate, resulting in the synthesis of the covalent immunopharmaceutical, dexamethasone-(C21-phosphoramide)-[anti-EGFR]. Following spectrophotometric analysis and validation of retained epidermal growth factor receptor type 1 (EGFR)-binding avidity by cell-ELISA, the selective anti-neoplasic cytotoxic potency of dexamethasone-(C21-phosphoramide)-[anti-EGFR] was established by MTT-based vitality stain methodology using adherent monolayer populations of human pulmonary adenocarcinoma (A549) known to overexpress the tropic membrane receptors EGFR and insulin-like growth factor receptor type 1. RESULTS The dexamethasone:IgG molar-incorporation-index for dexamethasone-(C21-phosphoramide)-[anti-EGFR] was 6.95:1 following exhaustive serial microfiltration. Cytotoxicity analysis: covalent bonding of dexamethasone to monoclonal anti-EGFR immunoglobulin did not significantly modify the ex vivo antineoplastic cytotoxicity of dexamethasone against pulmonary adenocarcinoma at and between the standardized dexamethasone equivalent concentrations of 10(-9) M and 10(-5) M. Rapid increases in antineoplastic cytotoxicity were observed at and between the dexamethasone equivalent concentrations of 10(-9) M and 10(-7) M where cancer cell death increased from 7.7% to a maximum of 64.9% (92.3%-35.1% residual survival), respectively, which closely paralleled values for "free" noncovalently bound dexamethasone. DISCUSSION Organic chemistry reaction regimens were optimized to develop a multiphase synthesis regimen for dexamethasone-(C21-phosphoramide)-[anti-EGFR]. Attributes of dexamethasone-(C21-phosphoramide)-[anti-EGFR] include a high dexamethasone molar incorporation-index, lack of extraneous chemical group introduction, retained EGFR-binding avidity ("targeted" delivery properties), and potential to enhance long-term pharmaceutical moiety effectiveness.
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Affiliation(s)
| | - Lakshmi Narayanan
- Department of Clinical Sciences, College of Veterinary Medicine, Mississippi State University, Starkville, MS, USA
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Ma L, Wang Y, Wang M, Tian Y, Kang W, Liu H, Wang H, Dou J, Zhou C. Effective antimicrobial activity of Cbf-14, derived from a cathelin-like domain, against penicillin-resistant bacteria. Biomaterials 2016; 87:32-45. [DOI: 10.1016/j.biomaterials.2016.02.011] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 02/04/2016] [Indexed: 12/26/2022]
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Niemirowicz K, Surel U, Wilczewska AZ, Mystkowska J, Piktel E, Gu X, Namiot Z, Kułakowska A, Savage PB, Bucki R. Bactericidal activity and biocompatibility of ceragenin-coated magnetic nanoparticles. J Nanobiotechnology 2015; 13:32. [PMID: 25929281 PMCID: PMC4458011 DOI: 10.1186/s12951-015-0093-5] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 04/23/2015] [Indexed: 01/04/2023] Open
Abstract
Background Ceragenins, synthetic mimics of endogenous antibacterial peptides, are promising candidate antimicrobial agents. However, in some settings their strong bactericidal activity is associated with toxicity towards host cells. To modulate ceragenin CSA-13 antibacterial activity and biocompatibility, CSA-13-coated magnetic nanoparticles (MNP-CSA-13) were synthesized. Transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) were used to characterize MNP-CSA-13 physicochemical properties. Bactericidal action and ability of these new compounds to prevent Pseudomonas. aeruginosa biofilm formation were assessed using a bacteria killing assay and crystal violet staining, respectively. Release of hemoglobin from human red blood cells was measured to evaluate MNP-CSA-13 hemolytic activity. In addition, we used surface activity measurements to monitor CSA-13 release from the MNP shell. Zeta potentials of P. aeruginosa cells and MNP-CSA-13 were determined to assess the interactions between the bacteria and nanoparticles. Morphology of P. aeruginosa subjected to MNP-CSA-13 treatment was evaluated using atomic force microscopy (AFM) to determine structural changes indicative of bactericidal activity. Results Our studies revealed that the MNP-CSA-13 nanosystem is stable and may be used as a pH control system to release CSA-13. MNP-CSA-13 exhibits strong antibacterial activity, and the ability to prevent bacteria biofilm formation in different body fluids. Additionally, a significant decrease in CSA-13 hemolytic activity was observed when the molecule was immobilized on the nanoparticle surface. Conclusion Our results demonstrate that CSA-13 retains bactericidal activity when immobilized on a MNP while biocompatibility increases when CSA-13 is covalently attached to the nanoparticle.
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Affiliation(s)
- Katarzyna Niemirowicz
- Department of Microbiological and Nanobiomedical Engineering, Medical University of Bialystok, Mickiewicza 2c, 15-222, Bialystok, Poland.
| | - Urszula Surel
- Department of Microbiological and Nanobiomedical Engineering, Medical University of Bialystok, Mickiewicza 2c, 15-222, Bialystok, Poland.
| | | | - Joanna Mystkowska
- Department of Materials and Biomedical Engineering, Białystok University of Technology, 15-351, Białystok, Poland.
| | - Ewelina Piktel
- Department of Microbiological and Nanobiomedical Engineering, Medical University of Bialystok, Mickiewicza 2c, 15-222, Bialystok, Poland.
| | - Xiaobo Gu
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA.
| | - Zbigniew Namiot
- Department of Physiology, Medical University of Białystok, 15-230, Białystok, Poland.
| | - Alina Kułakowska
- Department of Neurology, Medical University of Bialystok, 15-230, Bialystok, Poland.
| | - Paul B Savage
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA.
| | - Robert Bucki
- Department of Microbiological and Nanobiomedical Engineering, Medical University of Bialystok, Mickiewicza 2c, 15-222, Bialystok, Poland. .,Department of Physiology, Pathophysiology and Microbiology of Infections, The Faculty of Health Sciences of the Jan Kochanowski University in Kielce, 25-317, Kielce, Poland.
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Janmey PA, Slochower DR, Wang YH, Wen Q, Cēbers A. Polyelectrolyte properties of filamentous biopolymers and their consequences in biological fluids. SOFT MATTER 2014; 10:1439-49. [PMID: 24651463 PMCID: PMC4009494 DOI: 10.1039/c3sm50854d] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Anionic polyelectrolyte filaments are common in biological cells. DNA, RNA, the cytoskeletal filaments F-actin, microtubules, and intermediate filaments, and polysaccharides such as hyaluronan that form the pericellular matrix all have large net negative charge densities distributed over their surfaces. Several filamentous viruses with diameters and stiffnesses similar to those of cytoskeletal polymers also have similar negative charge densities. Extracellular protein filaments such collagen, fibrin and elastin, in contrast, have notably smaller charge densities and do not behave as highly charged polyelectrolytes in solution. This review summarizes data that demonstrate generic counterion-mediated effects on four structurally unrelated biopolymers of similar charge density: F-actin, vimentin, Pf1 virus, and DNA, and explores the possible biological and pathophysiological consequences of the polyelectrolyte properties of biological filaments.
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Affiliation(s)
- Paul A Janmey
- Institute for Medicine and Engineering, University of Pennsylvania, 1010 Vagelos Laboratories, 3340 Smith Walk, Philadelphia, PA 19104, USA
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Leszczynska K, Namiot D, Byfield FJ, Cruz K, Zendzian-Piotrowska M, Fein DE, Savage PB, Diamond S, McCulloch CA, Janmey PA, Bucki R. Antibacterial activity of the human host defence peptide LL-37 and selected synthetic cationic lipids against bacteria associated with oral and upper respiratory tract infections. J Antimicrob Chemother 2012; 68:610-8. [PMID: 23134677 DOI: 10.1093/jac/dks434] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVES We aim to develop antibacterial peptide mimics resistant to protease degradation, with broad-spectrum activity at sites of infection. METHODS The bactericidal activities of LL-37, ceragenins CSA-13, CSA-90 and CSA-92 and the spermine-conjugated dexamethasone derivative D2S were evaluated using MIC and MBC measurements. Gingival fibroblast counting, interleukin-8 (IL-8) and lactate dehydrogenase (LDH) release from keratinocytes (HaCat) were used to determine effects on cell growth, pro-inflammatory response and toxicity. RESULTS All tested cationic lipids showed stronger bactericidal activity than LL-37. Incubation of Staphylococcus aureus with half the MIC of LL-37 led to the appearance of bacteria resistant to its bactericidal effects, but identical incubations with CSA-13 or D2S did not produce resistant bacteria. Cathelicidin LL-37 significantly increased the total number of gingival fibroblasts, but ceragenins and D2S did not alter gingival fibroblast growth. Cationic lipids showed no toxicity to HaCat cells at concentrations resulting in bacterial killing. CONCLUSIONS These data suggest that cationic lipids such as ceragenins warrant further testing as potential novel antibacterial agents.
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Affiliation(s)
- Katarzyna Leszczynska
- Department of Diagnostic Microbiology, Medical University of Białystok, 15-230 Białystok, Poland
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Lönnfors M, Engberg O, Peterson BR, Slotte JP. Interaction of 3β-amino-5-cholestene with phospholipids in binary and ternary bilayer membranes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:648-55. [PMID: 22128897 PMCID: PMC3265605 DOI: 10.1021/la203589u] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
3β-Amino-5-cholestene (aminocholesterol) is a synthetic sterol whose properties in bilayer membranes have been examined. In fluid palmitoyl sphingomyelin (PSM) bilayers, aminocholesterol and cholesterol were equally effective in increasing acyl chain order, based on changes in diphenylhexatriene (DPH) anisotropy. In fluid 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) bilayers, aminocholesterol ordered acyl chains, but slightly less efficiently than cholesterol. Aminocholesterol eliminated the PSM and DPPC gel-to-liquid crystalline phase transition enthalpy linearly with concentration, and the enthalpy approached zero at 30 mol % sterol. Whereas cholesterol was able to increase the thermostability of ordered PSM domains in a fluid bilayer, aminocholesterol under equal conditions failed to do this, suggesting that its interaction with PSM was not as favorable as cholesterols. In ternary mixed bilayers, containing 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC), PSM or DPPC, and cholesterol at proportions to contain a liquid-ordered phase (60:40 by mol of POPC and PSM or DPPC, and 30 mol % cholesterol), the average lifetime of trans-parinaric acid (tPA) was close to 20 ns. When cholesterol was replaced with aminocholesterol in such mixed bilayers, the average lifetime of tPA was only marginally shorter (about 18 ns). This observation, together with acyl chain ordering data, clearly shows that aminocholesterol was able to form a liquid-ordered phase with saturated PSM or DPPC. We conclude that aminocholesterol should be a good sterol replacement in model membrane systems for which a partial positive charge is deemed beneficial.
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Affiliation(s)
- Max Lönnfors
- Biochemistry, Department of Biosciences, Åbo Akademi University, Tykistökatu 6A, 20520 Turku, Finland
| | - Oskar Engberg
- Biochemistry, Department of Biosciences, Åbo Akademi University, Tykistökatu 6A, 20520 Turku, Finland
| | - Blake R. Peterson
- Department of Medicinal Chemistry, the University of Kansas, 2034 Becker Dr., Lawrence, KS, 66047, USA
| | - J. Peter Slotte
- Biochemistry, Department of Biosciences, Åbo Akademi University, Tykistökatu 6A, 20520 Turku, Finland
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Brogden NK, Brogden KA. Will new generations of modified antimicrobial peptides improve their potential as pharmaceuticals? Int J Antimicrob Agents 2011; 38:217-25. [PMID: 21733662 DOI: 10.1016/j.ijantimicag.2011.05.004] [Citation(s) in RCA: 109] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Accepted: 05/09/2011] [Indexed: 12/20/2022]
Abstract
The concept of antimicrobial peptides (AMPs) as potent pharmaceuticals is firmly established in the literature, and most research articles on this topic conclude by stating that AMPs represent promising therapeutic agents against bacterial and fungal pathogens. Indeed, early research in this field showed that AMPs were diverse in nature, had high activities with low minimal inhibitory concentrations, had broad spectrums of activity against bacterial, fungal and viral pathogens, and could easily be manipulated to alter their specificities, reduce their cytotoxicities and increase their antimicrobial activities. Unfortunately, commercial development of these peptides, for even the simplest of applications, has been very limited. With some peptides there are obstacles with their manufacture, in vivo efficacy and in vivo retention. More recently, the focus has shifted. Contemporary research now uses a more sophisticated approach to develop AMPs that surmount many of these prior obstacles. AMP mimetics, hybrid AMPs, AMP congeners, cyclotides and stabilised AMPs, AMP conjugates and immobilised AMPs have all emerged with selective or 'targeted' antimicrobial activities, improved retention, or unique abilities that allow them to bind to medical or industrial surfaces. These groups of new peptides have creative medical and industrial application potentials to treat antibiotic-resistant bacterial infections and septic shock, to preserve food or to sanitise surfaces both in vitro and in vivo.
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Affiliation(s)
- Nicole K Brogden
- Department of Pharmaceutical Sciences, University of Kentucky, Lexington, KY 40536, USA
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