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Minooei F, Gilbert NM, Zhang L, Sarah NeCamp M, Mahmoud MY, Kyser AJ, Tyo KM, Watson WH, Patwardhan R, Lewis WG, Frieboes HB, Lewis AL, Steinbach-Rankins JM. Rapid-dissolving electrospun nanofibers for intra-vaginal antibiotic or probiotic delivery. Eur J Pharm Biopharm 2023; 190:81-93. [PMID: 37479065 PMCID: PMC10530173 DOI: 10.1016/j.ejpb.2023.07.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/12/2023] [Accepted: 07/17/2023] [Indexed: 07/23/2023]
Abstract
The emergence of probiotics as an alternative and adjunct to antibiotic treatment for microbiological disturbances of the female genitourinary system requires innovative delivery platforms for vaginal applications. This study developed a new, rapid-dissolving form using electrospun polyethylene oxide (PEO) fibers for delivery of antibiotic metronidazole or probiotic Lactobacillus acidophilus, and performed evaluation in vitro and in vivo. Fibers did not generate overt pathophysiology or encourage Gardnerella growth in a mouse vaginal colonization model, inducing no alterations in vaginal mucosa at 24 hr post-administration. PEO-fibers incorporating metronidazole (100 µg MET/mg polymer) effectively prevented and treated Gardnerella infections (∼3- and 2.5-log reduction, respectively, 24 hr post treatment) when administered vaginally. Incorporation of live Lactobacillus acidophilus (107 CFU/mL) demonstrated viable probiotic delivery in vitro by PEO and polyvinyl alcohol (PVA) fibers to inhibit Gardnerella (108 CFU/mL) in bacterial co-cultures (9.9- and 7.0-log reduction, respectively, 24 hr post-inoculation), and in the presence of vaginal epithelial cells (6.9- and 8.0-log reduction, respectively, 16 hr post-inoculation). Administration of Lactobacillus acidophilus in PEO-fibers achieved vaginal colonization in mice similar to colonization observed with free Lactobacillus. acidophilus. These experiments provide proof-of-concept for rapid-dissolving electrospun fibers as a successful platform for intra-vaginal antibiotic or probiotic delivery.
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Affiliation(s)
- Farnaz Minooei
- Department of Chemical Engineering, University of Louisville Speed School of Engineering, Louisville, KY 40202, USA
| | - Nicole M Gilbert
- Department of Pediatrics, Division of Infectious Diseases, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Longyun Zhang
- Department of Bioengineering, University of Louisville Speed School of Engineering, Louisville, KY 40202, USA
| | - Mary Sarah NeCamp
- Department of Bioengineering, University of Louisville Speed School of Engineering, Louisville, KY 40202, USA
| | - Mohamed Y Mahmoud
- Department of Bioengineering, University of Louisville Speed School of Engineering, Louisville, KY 40202, USA; Department of Toxicology and Forensic Medicine, Faculty of Veterinary Medicine, Cairo University, Egypt
| | - Anthony J Kyser
- Department of Bioengineering, University of Louisville Speed School of Engineering, Louisville, KY 40202, USA
| | - Kevin M Tyo
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY 40202, USA
| | - Walter H Watson
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, School of Medicine, University of Louisville, KY 40202, USA
| | - Ruta Patwardhan
- Department of Bioengineering, University of Louisville Speed School of Engineering, Louisville, KY 40202, USA
| | - Warren G Lewis
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California San Diego, La Jolla, CA USA; Glycobiology Research and Training Center, University of California San Diego, La Jolla, CA USA
| | - Hermann B Frieboes
- Department of Bioengineering, University of Louisville Speed School of Engineering, Louisville, KY 40202, USA; Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY 40202, USA; Center for Predictive Medicine, University of Louisville, 505 S. Hancock St., Louisville, KY 40202, USA; UofL Health - Brown Cancer Center, University of Louisville, KY, 40202, USA.
| | - Amanda L Lewis
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California San Diego, La Jolla, CA USA; Glycobiology Research and Training Center, University of California San Diego, La Jolla, CA USA
| | - Jill M Steinbach-Rankins
- Department of Bioengineering, University of Louisville Speed School of Engineering, Louisville, KY 40202, USA; Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY 40202, USA; Center for Predictive Medicine, University of Louisville, 505 S. Hancock St., Louisville, KY 40202, USA; Department of Microbiology and Immunology, University of Louisville School of Medicine, Louisville, KY 40202, USA
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Hobzova R, Sirc J, Shrestha K, Mudrova B, Bosakova Z, Slouf M, Munzarova M, Hrabeta J, Feglarova T, Cocarta AI. Multilayered Polyurethane/Poly(vinyl alcohol) Nanofibrous Mats for Local Topotecan Delivery as a Potential Retinoblastoma Treatment. Pharmaceutics 2023; 15:pharmaceutics15051398. [PMID: 37242640 DOI: 10.3390/pharmaceutics15051398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/27/2023] [Accepted: 04/28/2023] [Indexed: 05/28/2023] Open
Abstract
Local chemotherapy using polymer drug delivery systems has the potential to treat some cancers, including intraocular retinoblastoma, which is difficult to treat with systemically delivered drugs. Well-designed carriers can provide the required drug concentration at the target site over a prolonged time, reduce the overall drug dose needed, and suppress severe side effects. Herein, nanofibrous carriers of the anticancer agent topotecan (TPT) with a multilayered structure composed of a TPT-loaded inner layer of poly(vinyl alcohol) (PVA) and outer covering layers of polyurethane (PUR) are proposed. Scanning electron microscopy showed homogeneous incorporation of TPT into the PVA nanofibers. HPLC-FLD proved the good loading efficiency of TPT (≥85%) with a content of the pharmacologically active lactone TPT of more than 97%. In vitro release experiments demonstrated that the PUR cover layers effectively reduced the initial burst release of hydrophilic TPT. In a 3-round experiment with human retinoblastoma cells (Y-79), TPT showed prolonged release from the sandwich-structured nanofibers compared with that from a PVA monolayer, with significantly enhanced cytotoxic effects as a result of an increase in the PUR layer thickness. The presented PUR-PVA/TPT-PUR nanofibers appear to be promising carriers of active TPT lactone that could be useful for local cancer therapy.
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Affiliation(s)
- Radka Hobzova
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, 162 06 Prague, Czech Republic
| | - Jakub Sirc
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, 162 06 Prague, Czech Republic
| | - Kusum Shrestha
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, 162 06 Prague, Czech Republic
| | - Barbora Mudrova
- Department of Analytical Chemistry, Faculty of Science, Charles University, 128 43 Prague, Czech Republic
| | - Zuzana Bosakova
- Department of Analytical Chemistry, Faculty of Science, Charles University, 128 43 Prague, Czech Republic
| | - Miroslav Slouf
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, 162 06 Prague, Czech Republic
| | | | - Jan Hrabeta
- Department of Pediatric Hematology and Oncology, 2nd Faculty of Medicine, Charles University and Motol University Hospital, 150 06 Prague, Czech Republic
| | - Tereza Feglarova
- Department of Pediatric Hematology and Oncology, 2nd Faculty of Medicine, Charles University and Motol University Hospital, 150 06 Prague, Czech Republic
| | - Ana-Irina Cocarta
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, 162 06 Prague, Czech Republic
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Dart A, Roy D, Vlaskin V, Limqueco E, Lowe NM, Srinivasan S, Ratner DM, Bhave M, Stayton P, Kingshott P. A nanofiber based antiviral (TAF) prodrug delivery system. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2022; 133:112626. [PMID: 35039198 DOI: 10.1016/j.msec.2021.112626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 12/15/2021] [Accepted: 12/17/2021] [Indexed: 02/07/2023]
Abstract
HIV and hepatitis B are two of the most prevalent viruses globally, and despite readily available preventive treatments unforgiving treatment regimens still exist, such as daily doses of medicine that are challenging to maintain especially in poorer countries. More advanced and longer-lasting delivery vehicles can potentially overcome this problem by reducing maintenance requirements and significantly increase access to medicine. Here, we designed a technology to control the delivery of an antiviral drug over a long timeframe via a nanofiber based delivery scaffold that is both easy to produce and use. An antiviral prodrug containing tenofovir alafenamide (TAF) was synthesized by initial conjugation to glycerol monomethacrylate followed by polymerization to form a diblock copolymer (pTAF) using reversible addition-fragmentation chain transfer (RAFT). In order to generate an efficient drug delivery system this copolymer was fabricated into an electrospun nanofiber (ESF) scaffold using blend electrospinning with poly(caprolactone) (PCL) as the carrier polymer. SEM images revealed that the pTAF-PCL ESFs were uniform with an average diameter of (787 ± 0.212 nm), while XPS analysis demonstrated that the pTAF was overrepresented at the surface of the ESFs. Additionally, the pTAF exhibited a sustained release profile over a 2 month period in human serum (HS), suggesting that these types of copolymer-based drugamers can be used in conjunction with electrospinning to produce long-lasting drug delivery systems.
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Affiliation(s)
- Alexander Dart
- Department of Chemistry and Biotechnology, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Debashish Roy
- Molecular Engineering & Sciences Institute, Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
| | - Vladimir Vlaskin
- Molecular Engineering & Sciences Institute, Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
| | - Elaine Limqueco
- Molecular Engineering & Sciences Institute, Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
| | - Neona M Lowe
- Molecular Engineering & Sciences Institute, Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
| | - Selvi Srinivasan
- Molecular Engineering & Sciences Institute, Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
| | - Daniel M Ratner
- Molecular Engineering & Sciences Institute, Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
| | - Mrinal Bhave
- Department of Chemistry and Biotechnology, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Patrick Stayton
- Molecular Engineering & Sciences Institute, Department of Bioengineering, University of Washington, Seattle, WA 98195, USA.
| | - Peter Kingshott
- Department of Chemistry and Biotechnology, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia; ARC Training Centre Training Centre in Surface Engineering for Advanced Materials (SEAM), Swinburne University of Technology, Hawthorn, Victoria 3122, Australia.
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Schoeller J, Itel F, Wuertz-Kozak K, Fortunato G, Rossi RM. pH-Responsive Electrospun Nanofibers and Their Applications. POLYM REV 2021. [DOI: 10.1080/15583724.2021.1939372] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jean Schoeller
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomimetic Membranes and Textiles, St.Gallen, Switzerland
- Department of Health Science and Technology, ETH Zürich, Zürich, Switzerland
| | - Fabian Itel
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomimetic Membranes and Textiles, St.Gallen, Switzerland
| | - Karin Wuertz-Kozak
- Department of Health Science and Technology, ETH Zürich, Zürich, Switzerland
- Department of Biomedical Engineering, Rochester Institute of Technology (RIT), Rochester, New York, USA
| | - Giuseppino Fortunato
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomimetic Membranes and Textiles, St.Gallen, Switzerland
| | - René M. Rossi
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomimetic Membranes and Textiles, St.Gallen, Switzerland
- Department of Health Science and Technology, ETH Zürich, Zürich, Switzerland
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Chandrashekhar P, Minooei F, Arreguin W, Masigol M, Steinbach-Rankins JM. Perspectives on Existing and Novel Alternative Intravaginal Probiotic Delivery Methods in the Context of Bacterial Vaginosis Infection. AAPS J 2021; 23:66. [PMID: 33973067 PMCID: PMC8356663 DOI: 10.1208/s12248-021-00602-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 04/27/2021] [Indexed: 12/17/2022] Open
Abstract
Bacterial vaginosis (BV) is one of the most common vaginal infections that affects hundreds of millions of women of reproductive age, worldwide. Traditional treatment strategies, such as oral and topical antibiotics, have shown efficacy against BV, but frequent recurrence of infection and the development of antibiotic-resistant bacteria remain as significant challenges. Alternatively, recent progress in understanding immune, microbiological, and metabolic interactions in the vaginal microbiota has prompted the consideration of administering probiotic organisms to restore and maintain vaginal health within the context of BV prevention and treatment. Given this, the objective of this review is to discuss existing and potential alternative approaches to deliver, and to potentially sustain the delivery of probiotics, to prevent and/or treat BV infections. First, a brief overview is provided regarding the probiotic species and combinatorial probiotic strategies that have shown promise in the treatment of BV and in restoring female reproductive health. Additionally, the advantages and challenges associated with current oral and intravaginal probiotic delivery platforms are discussed. Lastly, we present emerging and promising alternative dosage forms, such as electrospun fibers and 3D bioprinted scaffolds, that may be adapted as new strategies to intravaginally deliver probiotic organisms. Graphical abstract.
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Affiliation(s)
| | - Farnaz Minooei
- Department of Chemical Engineering, University of Louisville Speed School of Engineering, Louisville, Kentucky, USA
- Center for Predictive Medicine, University of Louisville, Louisville, Kentucky, USA
| | - Wenndy Arreguin
- Department of Bioengineering, University of Louisville Speed School of Engineering, 505 S. Hancock St., Room 623, Louisville, Kentucky, 40202, USA
| | - Mohammadali Masigol
- Center for Predictive Medicine, University of Louisville, Louisville, Kentucky, USA
- Department of Bioengineering, University of Louisville Speed School of Engineering, 505 S. Hancock St., Room 623, Louisville, Kentucky, 40202, USA
| | - Jill M Steinbach-Rankins
- Center for Predictive Medicine, University of Louisville, Louisville, Kentucky, USA.
- Department of Bioengineering, University of Louisville Speed School of Engineering, 505 S. Hancock St., Room 623, Louisville, Kentucky, 40202, USA.
- Department of Microbiology and Immunology, University of Louisville School of Medicine, Louisville, Kentucky, USA.
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, Kentucky, USA.
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Tyo KM, Lasnik AB, Zhang L, Mahmoud M, Jenson AB, Fuqua JL, Palmer KE, Steinbach-Rankins JM. Sustained-release Griffithsin nanoparticle-fiber composites against HIV-1 and HSV-2 infections. J Control Release 2020; 321:84-99. [PMID: 32035194 DOI: 10.1016/j.jconrel.2020.02.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 02/01/2020] [Accepted: 02/03/2020] [Indexed: 02/07/2023]
Abstract
Human immunodeficiency virus (HIV-1) and herpes simplex virus 2 (HSV-2) affect hundreds of millions of people worldwide. The antiviral lectin, Griffithsin (GRFT), has been shown to be both safe and efficacious against HSV-2 and HIV-1 infections in vivo. The goal of this work was to develop a multilayered nanoparticle (NP)-electrospun fiber (EF) composite to provide sustained-release of GRFT, and to examine its safety and efficacy in a murine model of lethal HSV-2 infection. Composites were fabricated from polycaprolactone (PCL) fibers surrounding polyethylene oxide (PEO) fibers that incorporated methoxy poly(ethylene glycol)-b-poly(lactide-co-glycolide) (mPEG-PLGA) GRFT NPs. GRFT loading and release were determined via ELISA, showing that NP-EF composites achieved high GRFT loading, and provided sustained-release of GRFT for up to 90 d. The in vitro efficacy of GRFT NP-EFs was assessed using HIV-1 pseudovirus assays, demonstrating complete in vitro protection against HIV-1 infection. Additionally, sustained-release NP-EFs, administered 24 h prior to infection, prevented against a lethal dose of HSV-2 infection in a murine model. In parallel, histology and cytokine expression from murine reproductive tracts and vaginal lavages collected 24 and 72 h post-administration were similar to untreated mice, suggesting that NP-EF composites may be a promising and safe sustained-delivery platform to prevent HSV-2 infection. Future work will evaluate the ability to provide prolonged protection against multiple virus challenges, and different administration times with respect to infection.
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Affiliation(s)
- Kevin M Tyo
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, KY, United States; Center for Predictive Medicine, Louisville, KY, United States
| | - Amanda B Lasnik
- Center for Predictive Medicine, Louisville, KY, United States
| | - Longyun Zhang
- Center for Predictive Medicine, Louisville, KY, United States; Department of Bioengineering, Speed School of Engineering, University of Louisville, Louisville, KY, United States
| | - Mohamed Mahmoud
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, KY, United States; Center for Predictive Medicine, Louisville, KY, United States
| | - Alfred B Jenson
- James Graham Brown Cancer Center, University of Louisville School of Medicine, University of Louisville, Louisville, KY, United States
| | - Joshua L Fuqua
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, KY, United States; Center for Predictive Medicine, Louisville, KY, United States
| | - Kenneth E Palmer
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, KY, United States; Center for Predictive Medicine, Louisville, KY, United States; James Graham Brown Cancer Center, University of Louisville School of Medicine, University of Louisville, Louisville, KY, United States; Department of Microbiology and Immunology, School of Medicine, University of Louisville, KY, United States
| | - Jill M Steinbach-Rankins
- Department of Pharmacology and Toxicology, School of Medicine, University of Louisville, KY, United States; Center for Predictive Medicine, Louisville, KY, United States; James Graham Brown Cancer Center, University of Louisville School of Medicine, University of Louisville, Louisville, KY, United States; Department of Bioengineering, Speed School of Engineering, University of Louisville, Louisville, KY, United States; Department of Microbiology and Immunology, School of Medicine, University of Louisville, KY, United States.
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Scale‐up of electrospinning technology: Applications in the pharmaceutical industry. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2019; 12:e1611. [DOI: 10.1002/wnan.1611] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 11/27/2019] [Accepted: 11/30/2019] [Indexed: 01/25/2023]
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Novel Approaches for the Delivery of Anti-HIV Drugs-What Is New? Pharmaceutics 2019; 11:pharmaceutics11110554. [PMID: 31661775 PMCID: PMC6921055 DOI: 10.3390/pharmaceutics11110554] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 10/24/2019] [Indexed: 11/17/2022] Open
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