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Roussel S, Udabe J, Bin Sabri A, Calderón M, Donnelly R. Leveraging novel innovative thermoresponsive polymers in microneedles for targeted intradermal deposition. Int J Pharm 2024; 652:123847. [PMID: 38266945 DOI: 10.1016/j.ijpharm.2024.123847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/19/2024] [Accepted: 01/21/2024] [Indexed: 01/26/2024]
Abstract
Microneedles have garnered considerable attention over the years as a versatile pharmaceutical platform that could be leveraged to deliver drugs into and across the skin. In the current work, poly (N-isopropylacrylamide) (PNIPAm) is synthesized and characterized as a novel material for the development of a physiologically responsive microneedle-based drug delivery system. Typically, this polymer transitions reversibly between a swell state at lower temperatures and a more hydrophobic state at higher temperatures, enabling precise drug release. This study demonstrates that dissolving microneedles patches made from PNIPAm, incorporating BIS-PNIPAm, a crosslinked polymer variant, exhibit enhanced mechanical properties, evident from a smaller height reduction in microneedle (∼10 %). Although microneedles using PNIPAm alone were achievable, it displayed poor mechanical strength, requiring the inclusion of additional polymeric excipients like PVA to enhance mechanical properties. In addition, the incorporation of a thermoresponsive polymer did not have a significant (p > 0.05) impact on the insertion properties of the needles as all formulations inserted to a similar depth of 500 µm into ex vivo skin. Furthering this, the needles were loaded with a model payload, 1,1'-dioctadecyl-3,3,3',3'-tetramethylindodicarbocyanine perchlorate (DID) and the deposition of the cargo was monitored via multiphoton microscopy that showed that a deposit is formed at a depth of ≈200 µm. Also, it was revealed that crosslinked-PNIPAm (Bis-PNIPAm) formulations exhibited notable skin accumulationof the dye only after 4 h, independent of the excipient matrix used. This phenomenon was absent in non-crosslinked PNIPAm formulations, indicating a deposit formation in Bis-PNIPAm microneedle formulation. Collectively, this proof-of-concept study has advanced our understanding on the possibility to use PNIPAm for dissolving microneedle fabrication which could be harnessed for the deposition of nanoparticles into the dermis, for extended drug release within the skin.
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Affiliation(s)
- Sabrina Roussel
- Faculty of Pharmacy, CHU de Quebec Research Center, Université Laval, 2705 Laurier Blvd, Quebec G1V 4G2, Canada; School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Jakes Udabe
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; POLYMAT, Applied Chemistry Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Donostia - San Sebastián, Spain
| | - Akmal Bin Sabri
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; Division of Advanced Materials and Healthcare Technologies, School of Pharmacy, The University of Nottingham, NG7 2RD, UK
| | - Marcelo Calderón
- POLYMAT, Applied Chemistry Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Donostia - San Sebastián, Spain; IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
| | - Ryan Donnelly
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK.
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2
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Ismail YH, Wang K, Al Shehhi M, Al Hammadi A. Iodide ion-imprinted chitosan beads for highly selective adsorption for nuclear wastewater treatment applications. Heliyon 2024; 10:e24735. [PMID: 38318068 PMCID: PMC10838745 DOI: 10.1016/j.heliyon.2024.e24735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 01/05/2024] [Accepted: 01/12/2024] [Indexed: 02/07/2024] Open
Abstract
Iodide ions from radioactive iodine isotopes are common contaminants present in nuclear wastewater from nuclear power plants which are considered hazardous contaminants to be released in water sources even at low concentrations due to their association with metabolic disorders, therefore its removal from the nuclear wastewater effluents is necessary. Chitosan beads are natural and cost-efficient adsorbents that have been used for ion removal from wastewater. However, issues of poor selectivity persist in achieving high-efficiency iodide ion removal. In this study, ion-imprinted chitosan beads (IIC) have been synthesized using the phase-inversion method, IIC beads were modified by cross-linking with epichlorohydrin (IIC-EPI) and modified by cross-linking with epichlorohydrin and silicon dioxide nanoparticles (IIC-SiO2-EPI). Through 4 h of batch adsorption experiments, IIC beads achieved a maximum adsorption capacity (Qe) of 0.65 mmol g-1 and showed more preference for the iodide ions compared to the non-imprinted chitosan beads which achieved a maximum adsorption capacity of 0.27 mmol g-1 at pH 7. While the modified beads IIC-EPI and IIC-SiO2-EPI beads have boosted the adsorption capacities to 0.72 mmol g-1 and 0.91 mmol g-1. Scanning electron microscopic cross-sectional images have shown more pores and cavities than the surface images which agrees with the multilayer heterogeneous diffusion suggested by the Freundlich adsorption isotherm, that the experimental data has fitted. Adsorption kinetic data have fitted the Pseudo-second-order model as well as the Weber and Morris intraparticle model, which suggest an intraparticle pore diffusion adsorption mechanism, with the involvement of the physical electrostatic interactions with the cationic chitosan surface.
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Affiliation(s)
- Yassmin Handulle Ismail
- Chemical Engineering Department, Khalifa University of Science and Technology, P.O. Box 127788 Abu Dhabi, United Arab Emirates
- Emirates Nuclear Technology Center (ENTC), Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Kean Wang
- Singapore Technology Institute, 138683, Singapore, Singapore
| | - Maryam Al Shehhi
- Emirates Nuclear Technology Center (ENTC), Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
- Civil Infrastructure and Environmental Engineering Department, Khalifa University of Science and Technology, P.O. Box 127788 Abu Dhabi, United Arab Emirates
| | - Ali Al Hammadi
- Chemical Engineering Department, Khalifa University of Science and Technology, P.O. Box 127788 Abu Dhabi, United Arab Emirates
- Center for Catalysis and Separation (CeCas), Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
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3
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Beaven E, Kumar R, An JM, Mendoza H, Sutradhar SC, Choi W, Narayan M, Lee YK, Nurunnabi M. Potentials of ionic liquids to overcome physical and biological barriers. Adv Drug Deliv Rev 2024; 204:115157. [PMID: 38104896 PMCID: PMC10787599 DOI: 10.1016/j.addr.2023.115157] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 12/04/2023] [Accepted: 12/10/2023] [Indexed: 12/19/2023]
Abstract
Over the last decades, ionic liquids (IL) have shown great potential in non-invasive delivery starting from synthetic small molecules to biological large molecules. ILs are emerging as a particular class of drug delivery systems due to their unique physiochemical properties, simple surface modification, and functionalization. These features of IL help achieve specific design principles that are essential for a non-invasive drug delivery system. In this review, we have discussed IL and their applications in non-invasive drug delivery systems. We evaluated state-of-the-art development and advances of IL aiming to mitigate the biological and physical barriers to improve transdermal and oral delivery, summarized in this review. We also provided an overview of the various factors determining the systemic transportation of IL-based formulation. Additionally, we have emphasized how the ILs facilitate the transportation of therapeutic molecules by overcoming biological barriers.
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Affiliation(s)
- Elfa Beaven
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Texas at El Paso, El Paso, TX 79902, United States; Biomedical Engineering Program, College of Engineering, University of Texas at El Paso, El Paso, TX 79968, United States
| | - Raj Kumar
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Texas at El Paso, El Paso, TX 79902, United States; Biomedical Engineering Program, College of Engineering, University of Texas at El Paso, El Paso, TX 79968, United States
| | - Jeong Man An
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Hannia Mendoza
- Department of Chemistry and Biochemistry, College of Science, University of Texas at El Paso, El Paso, TX 79968, United States
| | - Sabuj Chandra Sutradhar
- 4D Convergence Technology Institute, Korea National University of Transportation, Jungpyeong 27909, Republic of Korea
| | - Wonho Choi
- 4D Convergence Technology Institute, Korea National University of Transportation, Jungpyeong 27909, Republic of Korea
| | - Mahesh Narayan
- Department of Chemistry and Biochemistry, College of Science, University of Texas at El Paso, El Paso, TX 79968, United States
| | - Yong-Kyu Lee
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul 04763, Republic of Korea; Department of Chemical and Biological Engineering, College of Engineering, Korea National University of Transportation, Chungju 380-702, Republic of Korea; 4D Convergence Technology Institute, Korea National University of Transportation, Jungpyeong 27909, Republic of Korea.
| | - Md Nurunnabi
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Texas at El Paso, El Paso, TX 79902, United States; Biomedical Engineering Program, College of Engineering, University of Texas at El Paso, El Paso, TX 79968, United States; Border Biomedical Research Center, University of Texas at El Paso, El Paso, TX 79968, United States.
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4
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Nottelet B, Buwalda S, van Nostrum CF, Zhao X, Deng C, Zhong Z, Cheah E, Svirskis D, Trayford C, van Rijt S, Ménard-Moyon C, Kumar R, Kehr NS, de Barros NR, Khademhosseini A, Kim HJ, Vermonden T. Roadmap on multifunctional materials for drug delivery. JPHYS MATERIALS 2024; 7:012502. [PMID: 38144214 PMCID: PMC10734278 DOI: 10.1088/2515-7639/ad05e8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 09/29/2023] [Accepted: 10/23/2023] [Indexed: 12/26/2023]
Abstract
This Roadmap on drug delivery aims to cover some of the most recent advances in the field of materials for drug delivery systems (DDSs) and emphasizes the role that multifunctional materials play in advancing the performance of modern DDSs in the context of the most current challenges presented. The Roadmap is comprised of multiple sections, each of which introduces the status of the field, the current and future challenges faced, and a perspective of the required advances necessary for biomaterial science to tackle these challenges. It is our hope that this collective vision will contribute to the initiation of conversation and collaboration across all areas of multifunctional materials for DDSs. We stress that this article is not meant to be a fully comprehensive review but rather an up-to-date snapshot of different areas of research, with a minimal number of references that focus upon the very latest research developments.
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Affiliation(s)
- Benjamin Nottelet
- IBMM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
- Department of Pharmacy, Nîmes University Hospital, Univ Montpellier, 30900 Nimes, France
| | - Sytze Buwalda
- MINES Paris, PSL University, Center for Materials Forming, 06904 Sophia Antipolis, France
| | | | - Xiaofei Zhao
- Biomedical Polymers Laboratory, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou 215123, People’s Republic of China
| | - Chao Deng
- Biomedical Polymers Laboratory, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou 215123, People’s Republic of China
| | - Zhiyuan Zhong
- Biomedical Polymers Laboratory, College of Chemistry, Chemical Engineering and Materials Science, and State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou 215123, People’s Republic of China
| | - Ernest Cheah
- School of Pharmacy, University of Auckland, 85 Park Road, Grafton, Auckland 1023, New Zealand
| | - Darren Svirskis
- School of Pharmacy, University of Auckland, 85 Park Road, Grafton, Auckland 1023, New Zealand
| | - Chloe Trayford
- Department of Instructive Biomaterials Engineering, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, PO Box 616, 6200 MD Maastricht, The Netherlands
| | - Sabine van Rijt
- Department of Instructive Biomaterials Engineering, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, PO Box 616, 6200 MD Maastricht, The Netherlands
| | - Cécilia Ménard-Moyon
- CNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR 3572, 67000 Strasbourg, France
| | - Ravi Kumar
- Physikalisches Institute and Center of Soft Nanoscience, University of Münster, Münster, Germany
| | - Nermin Seda Kehr
- Physikalisches Institute and Center of Soft Nanoscience, University of Münster, Münster, Germany
- Department of Chemistry, Izmir Institute of Technology, Izmir, Turkey
| | - Natan Roberto de Barros
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA 90274, United States of America
| | - Ali Khademhosseini
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA 90274, United States of America
| | - Han-Jun Kim
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA 90274, United States of America
- College of Pharmacy, Korea University, Sejong 30019, Republic of Korea
| | - Tina Vermonden
- Utrecht Institute for Pharmaceutical Sciences, Utrecht,The Netherlands
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5
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Nita LE, Nacu I, Ghilan A, Rusu AG, Şerban AM, Bercea M, Verestiuc L, Chiriac AP. Evaluation of hyaluronic acid-polymacrolactone hydrogels with 3D printing capacity. Int J Biol Macromol 2024; 256:128279. [PMID: 37992923 DOI: 10.1016/j.ijbiomac.2023.128279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 11/13/2023] [Accepted: 11/17/2023] [Indexed: 11/24/2023]
Abstract
The implementation of personalized patches, tailored to individual genetic profiles and containing specific amounts of bioactive substances, has the potential to produce a transformative impact within the medical sector. There are several methods of designing scaffolds in the context of personalized medicine, with three-dimensional (3D) printing emerging as a pivotal technique. This innovative approach can be used to construct a wide variety of pharmaceutical dosage forms, characterized by variations in shape, release profile, and drug combinations, allowing precise dose individualization and the incorporation of multiple therapeutic agents. To expand the potential and applicability of personalized medicine, particularly with regards to indomethacin (IND), a drug necessitating individualized dosing, this study proposes the development of new transdermal delivery systems for IND based on hyaluronic acid and a polylactone synthesized within our research group, namely poly(ethylene brasilate-co-squaric acid) (PEBSA). The obtained systems were characterized in terms of their swelling capacity, rheological behavior, and morphological characteristics that highlighted the formation of stable three-dimensional networks. To impart specific shape and geometry to the structures, multi-component systems based on PEBSA, HA, and methacrylate gelatin were obtained. The scaffolds were loaded with IND and subsequently 3D printed. The release capacity of IND and its dependence on the relative ratios of the components comprising the scaffold composition were highlighted. The cytocompatibility studies revealed the successful development of biocompatible and noncytotoxic systems.
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Affiliation(s)
- Loredana E Nita
- "Petru Poni" Institute of Macromolecular Chemistry, 41 A Grigore Ghica Voda Alley, 700487 Iasi, Romania.
| | - Isabella Nacu
- "Petru Poni" Institute of Macromolecular Chemistry, 41 A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Alina Ghilan
- "Petru Poni" Institute of Macromolecular Chemistry, 41 A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Alina G Rusu
- "Petru Poni" Institute of Macromolecular Chemistry, 41 A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Alexandru M Şerban
- "Petru Poni" Institute of Macromolecular Chemistry, 41 A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Maria Bercea
- "Petru Poni" Institute of Macromolecular Chemistry, 41 A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Liliana Verestiuc
- Department of Biomedical Sciences, Faculty of Medical Bioengineering, "Grigore T. Popa" University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Aurica P Chiriac
- "Petru Poni" Institute of Macromolecular Chemistry, 41 A Grigore Ghica Voda Alley, 700487 Iasi, Romania
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6
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Seifi S, Shamloo A, Tavoosi SN, Almasi-Jaf A, Shaygani H, Sayah MR. A novel multifunctional chitosan-gelatin/carboxymethyl cellulose-alginate bilayer hydrogel containing human placenta extract for accelerating full-thickness wound healing. Int J Biol Macromol 2023; 253:126929. [PMID: 37717877 DOI: 10.1016/j.ijbiomac.2023.126929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 09/02/2023] [Accepted: 09/14/2023] [Indexed: 09/19/2023]
Abstract
The replication of skin's dermal and epidermal morphology within a full-thickness wound using a bi-layer hydrogel to cater to their distinct needs is a compelling pursuit. Moreover, human placenta extract (HPE), containing a diverse array of bioactive agents, has proven to be effective in promoting the wound healing process and enhancing epidermal keratinocytes. This study presents a multifunctional bi-layer hydrogel incorporating HPE for accelerating full-thickness wound healing through sustained HPE release, inhibition of bacteria invasion, and promotion of cell proliferation. The upper layer of the scaffold, known as the dressing layer, is composed of carboxymethyl cellulose and sodium alginate, serving as a supportive layer for cell proliferation. The under layer, referred to as the regenerative layer, is composed of chitosan and gelatin, providing an extracellular matrix-like, porous, moist, and antibacterial environment for cell growth. The scaffold was optimized to replicate the morphology of the dermal and epidermal layers, with suitable fibroblast infiltration and a pore size of approximately 283μm. Furthermore, the degradation rate of the samples matched the wound healing rate and persisted throughout this period. The sustained HPE release rate, facilitated by the degradation rate, was optimized to reach ~98% after 28 days, covering the entire healing period. The samples demonstrated robust antibacterial capabilities, with bacterial inhibition zone diameters of and 2.63±0.12cm for S. aureus and E. coli, respectively. The biocompatibility of the samples remained at approximately 68.33±4.5% after 21 days of fibroblast cell culture. The in vivo experiment indicated that the HPE@Bilayer hydrogel promotes the formation of new blood vessels and fibroblasts during the early stages of healing, leading to the appropriate formation of granulation tissue and a wound contraction rate of (79.31±3.1)%. Additionally, it resulted in the formation of a thick epidermal layer (keratinization) that effectively covered all the impaired areas, achieving a wound contraction rate of 95.83±6.3% at the late stage of wound healing. Furthermore, immunohistochemistry staining for CD31 and TGF-β revealed that the HPE@Bilayer group had 22 blood vessels/field and 34%-66% immunoactive cells, respectively, after 14 days of healing. However, by day 21, angiogenesis and TGF-β expression had declined, demonstrating that the wounds had been successfully treated with minimal scarring.
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Affiliation(s)
- Saeed Seifi
- School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran; Stem Cell and Regenerative Medicine Institute, Sharif University of Technology, Tehran 11155-9161, Iran
| | - Amir Shamloo
- School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran; Stem Cell and Regenerative Medicine Institute, Sharif University of Technology, Tehran 11155-9161, Iran.
| | - Sayed Navid Tavoosi
- School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran; Stem Cell and Regenerative Medicine Institute, Sharif University of Technology, Tehran 11155-9161, Iran
| | - Aram Almasi-Jaf
- School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran; Stem Cell and Regenerative Medicine Institute, Sharif University of Technology, Tehran 11155-9161, Iran
| | - Hossein Shaygani
- School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran; Stem Cell and Regenerative Medicine Institute, Sharif University of Technology, Tehran 11155-9161, Iran
| | - Mohammad Reza Sayah
- School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran; Stem Cell and Regenerative Medicine Institute, Sharif University of Technology, Tehran 11155-9161, Iran
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7
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Balafouti A, Forys A, Trzebicka B, Gerardos AM, Pispas S. Anionic Hyperbranched Amphiphilic Polyelectrolytes as Nanocarriers for Antimicrobial Proteins and Peptides. MATERIALS (BASEL, SWITZERLAND) 2023; 16:7702. [PMID: 38138846 PMCID: PMC10745097 DOI: 10.3390/ma16247702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 12/24/2023]
Abstract
This manuscript presents the synthesis of hyperbranched amphiphilic poly (lauryl methacrylate-co-tert-butyl methacrylate-co-methacrylic acid), H-P(LMA-co-tBMA-co-MAA) copolymers via reversible addition fragmentation chain transfer (RAFT) copolymerization of tBMA and LMA, and their post-polymerization modification to anionic amphiphilic polyelectrolytes. The focus is on investigating whether the combination of the hydrophobic characters of LMA and tBMA segments, as well as the polyelectrolyte and hydrophilic properties of MAA segments, both distributed within a unique hyperbranched polymer chain topology, would result in intriguing, branched copolymers with the potential to be applied in nanomedicine. Therefore, we studied the self-assembly behavior of these copolymers in aqueous media, as well as their ability to form complexes with cationic proteins, namely lysozyme (LYZ) and polymyxin (PMX). Various physicochemical characterization techniques, including size exclusion chromatography (SEC) and proton nuclear magnetic resonance (1H-NMR), verified the molecular characteristics of these well-defined copolymers, whereas light scattering and fluorescence spectroscopy techniques revealed promising nanoparticle (NP) self- and co-assembly properties of the copolymers in aqueous media.
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Affiliation(s)
- Anastasia Balafouti
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., 11635 Athens, Greece; (A.B.); (A.M.G.)
- Department of Chemistry, National and Kapodistrian University of Athens (NKUA), 15784 Athens, Greece
| | - Aleksander Forys
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 ul. M. Curie-Skłodowskiej, 41-819 Zabrze, Poland; (A.F.); (B.T.)
| | - Barbara Trzebicka
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 ul. M. Curie-Skłodowskiej, 41-819 Zabrze, Poland; (A.F.); (B.T.)
| | - Angelica Maria Gerardos
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., 11635 Athens, Greece; (A.B.); (A.M.G.)
- Department of Chemistry, National and Kapodistrian University of Athens (NKUA), 15784 Athens, Greece
| | - Stergios Pispas
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., 11635 Athens, Greece; (A.B.); (A.M.G.)
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8
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Kurowska I, Markiewicz KH, Niemirowicz-Laskowska K, Destarac M, Wielgat P, Misztalewska-Turkowicz I, Misiak P, Car H, Wilczewska AZ. Membrane-Active Thermoresponsive Block Copolymers Containing a Diacylglycerol-Based Segment: RAFT Synthesis, Doxorubicin Encapsulation, and Evaluation of Cytotoxicity against Breast Cancer Cells. Biomacromolecules 2023; 24:4854-4868. [PMID: 37842917 PMCID: PMC10646981 DOI: 10.1021/acs.biomac.3c00580] [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: 06/14/2023] [Revised: 10/03/2023] [Indexed: 10/17/2023]
Abstract
Herein, we report the formation of drug delivery systems from original thermoresponsive block copolymers containing lipid-based segments. Two acrylate monomers derived from palmitic- or oleic-acid-based diacylglycerols (DAGs) were synthesized and polymerized by the reversible addition-fragmentation chain transfer (RAFT) method. Well-defined DAG-based polymers with targeted molar masses and narrow molar mass distributions were next used as macro-chain transfer agents (macro-CTAs) for the polymerization of N-isopropylacrylamide (NIPAAm) or N-vinylcaprolactam (NVCL). The obtained amphiphilic block copolymers were formed into polymeric nanoparticles (PNPs) with and without encapsulated doxorubicin and characterized. Their biological assessment indicated appropriate cytocompatibility with the representatives of normal cells. Furthermore, compared to the free drug, increased cytotoxicity and apoptosis or necrosis induction in breast cancer cells was documented, including a highly aggressive and invasive triple-negative MDA-MB-231 cell line.
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Affiliation(s)
- Izabela Kurowska
- Faculty
of Chemistry, University of Bialystok, Ciolkowskiego 1K, Bialystok 15-245, Poland
- Doctoral
School of Exact and Natural Sciences, University
of Bialystok, Bialystok 15-245, Poland
| | - Karolina H. Markiewicz
- Faculty
of Chemistry, University of Bialystok, Ciolkowskiego 1K, Bialystok 15-245, Poland
| | | | - Mathias Destarac
- Laboratoire
IMRCP, CNRS UMR 5623, Paul Sabatier University, Toulouse Cedex 09 31062, France
| | - Przemysław Wielgat
- Department
of Clinical Pharmacology, Medical University
of Bialystok, Waszyngtona 15A, Bialystok 15-274, Poland
| | | | - Paweł Misiak
- Faculty
of Chemistry, University of Bialystok, Ciolkowskiego 1K, Bialystok 15-245, Poland
| | - Halina Car
- Department
of Experimental Pharmacology, Medical University
of Bialystok, Szpitalna 37, Bialystok 15-295, Poland
- Department
of Clinical Pharmacology, Medical University
of Bialystok, Waszyngtona 15A, Bialystok 15-274, Poland
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9
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Ngoc LTN, Moon JY, Lee YC. Plant Extract-Derived Carbon Dots as Cosmetic Ingredients. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2654. [PMID: 37836295 PMCID: PMC10574410 DOI: 10.3390/nano13192654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/22/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023]
Abstract
Plant extract-derived carbon dots (C-dots) have emerged as promising components for sustainability and natural inspiration to meet consumer demands. This review comprehensively explores the potential applications of C-dots derived from plant extracts in cosmetics. This paper discusses the synthesis methodologies for the generation of C-dots from plant precursors, including pyrolysis carbonization, chemical oxidation, hydrothermal, microwave-assisted, and ultrasonic methods. Plant extract-derived C-dots offer distinct advantages over conventional synthetic materials by taking advantage of the inherent properties of plants, such as antioxidant, anti-inflammatory, and UV protective properties. These outstanding properties are critical for novel cosmetic applications such as for controlling skin aging, the treatment of inflammatory skin conditions, and sunscreen. In conclusion, plant extract-derived C-dots combine cutting-edge nanotechnology and sustainable cosmetic innovation, presenting an opportunity to revolutionize the industry by offering enhanced properties while embracing eco-friendly practices.
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Affiliation(s)
- Le Thi Nhu Ngoc
- Department of Nano Science and Technology Convergence, Gachon University, 1342 Seongnam-Daero, Sujeong-gu, Seongnam-si 13120, Gyeonggi-do, Republic of Korea;
| | - Ju-Young Moon
- Major in Beauty Convergence, Kwangwoon University, 20 Kwangwoon-ro, Nowon-gu, Seoul 01897, Republic of Korea
| | - Young-Chul Lee
- Department of BioNano Technology, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si 13120, Gyeonggi-do, Republic of Korea
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10
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Dwivedi K, Mandal AK, Afzal O, Altamimi ASA, Sahoo A, Alossaimi MA, Almalki WH, Alzahrani A, Barkat MA, Almeleebia TM, Mir Najib Ullah SN, Rahman M. Emergence of Nano-Based Formulations for Effective Delivery of Flavonoids against Topical Infectious Disorders. Gels 2023; 9:671. [PMID: 37623126 PMCID: PMC10453850 DOI: 10.3390/gels9080671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/26/2023] [Accepted: 08/03/2023] [Indexed: 08/26/2023] Open
Abstract
Flavonoids are hydroxylated phenolic substances in vegetables, fruits, flowers, seeds, wine, tea, nuts, propolis, and honey. They belong to a versatile category of natural polyphenolic compounds. Their biological function depends on various factors such as their chemical structure, degree of hydroxylation, degree of polymerization conjugation, and substitutions. Flavonoids have gained considerable attention among researchers, as they show a wide range of pharmacological activities, including coronary heart disease prevention, antioxidative, hepatoprotective, anti-inflammatory, free-radical scavenging, anticancer, and anti-atherosclerotic activities. Plants synthesize flavonoid compounds in response to pathogen attacks, and these compounds exhibit potent antimicrobial (antibacterial, antifungal, and antiviral) activity against a wide range of pathogenic microorganisms. However, certain antibacterial flavonoids have the ability to selectively target the cell wall of bacteria and inhibit virulence factors, including biofilm formation. Moreover, some flavonoids are known to reverse antibiotic resistance and enhance the efficacy of existing antibiotic drugs. However, due to their poor solubility in water, flavonoids have limited oral bioavailability. They are quickly metabolized in the gastrointestinal region, which limits their ability to prevent and treat various disorders. The integration of flavonoids into nanomedicine constitutes a viable strategy for achieving efficient cutaneous delivery owing to their favorable encapsulation capacity and diminished toxicity. The utilization of nanoparticles or nanoformulations facilitates drug delivery by targeting the drug to the specific site of action and exhibits excellent physicochemical stability.
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Affiliation(s)
- Khusbu Dwivedi
- Department of Pharmaceutics, Sambhunath Institute of Pharmacy Jhalwa, Prayagraj 211015, Uttar Pradesh, India;
| | - Ashok Kumar Mandal
- Department of Pharmacology, Faculty of Medicine, University Malaya, Kuala Lumpur 50603, Malaysia;
| | - Obaid Afzal
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Alkharj 11942, Saudi Arabia; (O.A.); (A.S.A.A.); (M.A.A.)
| | - Abdulmalik Saleh Alfawaz Altamimi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Alkharj 11942, Saudi Arabia; (O.A.); (A.S.A.A.); (M.A.A.)
| | - Ankit Sahoo
- Department of Pharmaceutical Sciences, Shalom Institute of Health & Allied Sciences, Sam Higginbottom University of Agriculture, Technology & Sciences, Allahabad 211007, Uttar Pradesh, India;
| | - Manal A. Alossaimi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Alkharj 11942, Saudi Arabia; (O.A.); (A.S.A.A.); (M.A.A.)
| | - Waleed H. Almalki
- Department of Pharmacology and Toxicology, College of Pharmacy, Umm Al-Qura University, Makkah 21955, Saudi Arabia;
| | - Abdulaziz Alzahrani
- Pharmaceuticals Chemistry Department, Faculty of Clinical Pharmacy, Al-Baha University, Alaqiq 65779, Saudi Arabia;
| | - Md. Abul Barkat
- Department of Pharmaceutics, College of Pharmacy, University of Hafr Al Batin, Al-Batin 39524, Saudi Arabia;
| | - Tahani M. Almeleebia
- Department of Clinical Pharmacy, College of Pharmacy, King Khalid University, Abha 61421, Saudi Arabia;
| | | | - Mahfoozur Rahman
- Department of Pharmaceutical Sciences, Shalom Institute of Health & Allied Sciences, Sam Higginbottom University of Agriculture, Technology & Sciences, Allahabad 211007, Uttar Pradesh, India;
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11
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Estabragh MAR, Bami MS, Dehghannoudeh G, Noudeh YD, Moghimipour E. Cellulose derivatives and natural gums as gelling agents for preparation of emulgel-based dosage forms: A brief review. Int J Biol Macromol 2023; 241:124538. [PMID: 37085064 DOI: 10.1016/j.ijbiomac.2023.124538] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 04/10/2023] [Accepted: 04/17/2023] [Indexed: 04/23/2023]
Abstract
Incorporation of an emulsion onto a gel base develops a drug delivery system with improved characteristics, known as emulgel, that can envelop both hydrophilic and lipophilic molecules, and therefore increase stability and penetration of topical formulations. Such a drug delivery system provides controlled drug release that has more patient compliance and higher therapeutic efficacy. Emulgel is prepared in three main stages, preparation of water-in-oil or oil-in-water emulsion, providing the gel base, and incorporation of prepared emulsion onto gel base with continuous stirring. Various materials such as different oils (e.g. sesame oil, balsam oil, and mineral oil), emulsifiers (e.g. Tween® and Span® as the non-ionic surfactant, polyvinyl alcohol), and gelling agents including cellulose derivatives such as hydroxypropyl methylcellulose (HPMC), hydroxyethylcellulose (HEC) and carboxymethyl cellulose (CMC) in different concentrations are used in emulgel preparation. The physical properties, particle size distribution, spreadability, permeation, and drug release rate are evaluated in their development and characterization. They are used in skin disorders and other diseases such as chronic anal fisher. Also, anti-acne, analgesic, and anti-inflammatory drugs have been formulated as emulgel delivery system and their effects have been studied. In this article, the subject is to review the characteristics, preparation methods, and therapeutic efficacy as well as the potential clinical use of emulgels.
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Affiliation(s)
| | - Marzieh Sajadi Bami
- Department of Pharmaceutics, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
| | - Gholamreza Dehghannoudeh
- Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Yasmin Dehghan Noudeh
- University of Saskatchewan, College of Medicine, Department of Anatomy, Physiology, Pharmacology, Canada
| | - Eskandar Moghimipour
- Nanotechnology Research Center, Faculty of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahwaz, Iran.
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12
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Mudjahid M, Meidianto Asri R, Nainu F, Dian Permana A. Validation of spectrophotometric method to quantify chloramphenicol in fluid and rat skin tissue mimicking infection environment: Application to in vitro release and ex vivo dermatokinetic studies from dissolving microneedle loaded microparticle sensitive bacteria. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 291:122374. [PMID: 36682254 DOI: 10.1016/j.saa.2023.122374] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 12/15/2022] [Accepted: 01/12/2023] [Indexed: 06/17/2023]
Abstract
Cellulitis is a common dermis/subcutaneous tissue skin infection and shared global disease burden, with a higher incidence for males and people aged 45-64 years. Application therapy of chloramphenicol (CHL) has been hindered because of its toxicity and limited penetration into the skin. In this research, CHL was developed into a bacterially sensitive microparticles which were further incorporated into a microneedle system to increase penetration. To support this formulation, in this study, UV-vis spectrophotometry method was validated in methanol, polyvinyl alcohol (PVA) 1%, phosphate buffered saline (PBS), tryptic soy broth (TSB) (fluid-mimicking infection), and skin tissue to quantify amount of CHL. The developed analytical method was subsequently validated according to ICH guidelines. The results obtained showed that the correlation coefficients were linear ≥0.9934. The values of LLOQ inside the methanol, PVA 1%, PBS, TSB, and skin tissue were 7.20 µg/mL, 4.40 µg/mL, 8.18 µg/mL, 387.48 µg/mL, and 7.27 µg/mL, respectively. The accuracy and precision of the developed method were prominent. These methods were successfully applied to quantify the amount of CHL in microparticle and microneedle system in fluid and tissue skin infection. The result showed the high drug release microparticle sensitive bacteria, and high drug retention in ex vivo dermatokinetic evaluation in rat skin tissue containing bacterial infection. This was due to the presence of Staphylococcus aureus bacteria culture that produced lipase enzymes, playing a role in lysing microparticle matrix to develop selectively delivery antimicrobials. A further analytical method needs to be matured to quantify CHL inside the in vivo studies.
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Affiliation(s)
- Mukarram Mudjahid
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia
| | | | - Firzan Nainu
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia
| | - Andi Dian Permana
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia.
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13
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Giordani B, Abruzzo A, Parolin C, Foschi C, Laghi L, Marangoni A, Luppi B, Vitali B. Prebiotic Activity of Vaginal Lactobacilli on Bifidobacteria: from Concept to Formulation. Microbiol Spectr 2023; 11:e0200922. [PMID: 36602371 PMCID: PMC9927276 DOI: 10.1128/spectrum.02009-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The gut of babies born vaginally is rapidly colonized by Bifidobacterium spp. after birth, while in infants born by cesarean section (C-section), the presence of bifidobacteria drops dramatically, increasing the risk of developing gastrointestinal disorders. Considering that newborns naturally come into contact with maternal lactobacilli as they pass through the birth canal, the aim of this work is to exploit for the first time the bifidogenic activity exerted by the cell-free supernatants (CFSs) from lactobacilli of vaginal origin, belonging to the species Lactobacillus crispatus, Lactobacillus gasseri, Limosilactobacillus vaginalis, and Lactiplantibacillus plantarum. CFSs were recovered after 7 h, 13 h, and 24 h of fermentation and assessed for the ability to stimulate the planktonic growth and biofilms of Bifidobacterium strains belonging to species widely represented in the gut tract. A bifidogenic effect was observed for all CFSs; such activity was maximal for CFSs recovered in exponential phase and was strongly dependent on the species of lactobacilli. Importantly, no stimulating effects on an intestinal Escherichia coli strain were observed. CFSs from L. vaginalis BC17 showed the best bifidogenic profile since they increased bifidobacterial planktonic growth by up to 432% and biofilm formation by up to 289%. The CFS at 7 h from BC17 was successfully formulated with a hyaluronic acid-based hydrogel aimed at preventing and treating breast sores in lactating women and exerting bifidogenic activity in infants born mainly by C-section. IMPORTANCE Bifidobacteria in the gut tract of infants play crucial roles in the prevention of gastrointestinal diseases and the maturation of the immune system. Consequently, strategies to trigger a bifidogenic shift in the infant gut are highly desirable. Evidences suggest that the presence of a maternal vaginal microbiota dominated by health-promoting lactobacilli and the development of a bifidobacterium-enriched gut microbiota in newborns are interconnected. In this context, we found out that the cell-free supernatants from lactobacilli of vaginal origin were able to effectively stimulate the proliferation of Bifidobacterium spp. grown in free-floating and biofilm forms. The cell-free supernatant from Limosilactobacillus vaginalis BC17 showed excellent bifidogenic behavior, which was preserved even after its incorporation into a nipple formulation for lactating women. Lactobacilli derivatives, such as cell-free supernatants, have gained increasing interest by virtue of their safer profile than that of living cells and can be proposed as an ecosustainable approach to favor gut colonization of infants by bifidobacteria.
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Affiliation(s)
- Barbara Giordani
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Angela Abruzzo
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Carola Parolin
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Claudio Foschi
- Section of Microbiology, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
- Microbiology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Luca Laghi
- Department of Agricultural and Food Sciences, University of Bologna, Cesena, Italy
| | - Antonella Marangoni
- Section of Microbiology, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Barbara Luppi
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Beatrice Vitali
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum, University of Bologna, Bologna, Italy
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14
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Noddeland HK, Lind M, Jensen LB, Petersson K, Skak-Nielsen T, Larsen FH, Malmsten M, Heinz A. Design and characterization of matrix metalloproteinase-responsive hydrogels for the treatment of inflammatory skin diseases. Acta Biomater 2023; 157:149-161. [PMID: 36526241 DOI: 10.1016/j.actbio.2022.12.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 11/23/2022] [Accepted: 12/07/2022] [Indexed: 12/15/2022]
Abstract
Enzyme-responsive hydrogels, formed by step growth photopolymerization of biscysteine peptide linkers with alkene functionalized polyethylene glycol, provide interesting opportunities as biomaterials and drug delivery systems. In this study, we developed stimuli-responsive, specific, and cytocompatible hydrogels for delivery of anti-inflammatory drugs for the treatment of inflammatory skin diseases. We designed peptide linkers with optimized sensitivity towards matrix metalloproteinases, a family of proteolytic enzymes overexpressed in the extracellular matrix of the skin during inflammation. The peptide linkers were crosslinked with branched 4-arm and 8-arm polyethylene glycols by thiol-norbornene photopolymerization, leading to the formation of a hydrogel network, in which the anti-inflammatory Janus kinase inhibitor tofacitinib citrate was incorporated. The hydrogels were extensively characterized by physical properties, in vitro release studies, cytocompatibility with fibroblasts, and anti-inflammatory efficacy testing in both an atopic dermatitis-like keratinocyte assay and an activated T-cell assay. The drug release was studied after single and multiple-time exposure to matrix metalloproteinase 9 to mimic inflammatory flare-ups. Drug release was found to be triggered by matrix metalloproteinase 9 and to depend on type of crosslinker and of the polyethylene glycol polymer, due to differences in architecture and swelling behavior. Moreover, swollen hydrogels showed elastic properties similar to those of extracellular matrix proteins in the dermis. Cell studies revealed limited cytotoxicity when fibroblasts and keratinocytes were exposed to the hydrogels or their enzymatic cleavage products. Taken together, our results suggest multi-arm polyethylene glycol hydrogels as promising matrix metalloproteinase-responsive drug delivery systems, with potential in the treatment of inflammatory skin disease. STATEMENT OF SIGNIFICANCE: Smart responsive drug delivery systems such as matrix metalloproteinase-responsive hydrogels are excellent candidates for the treatment of inflammatory skin diseases including psoriasis. Their release profile can be optimized to correspond to the patient's individual disease state by tuning formulation parameters and disease-related stimuli, providing personalized treatment solutions. However, insufficient cross-linking efficiency, low matrix metalloproteinase sensitivity, and undesirable drug release kinetics remain major challenges in the development of such drug delivery systems. In this study, we address shortcomings of previous work by designing peptide linkers with optimized sensitivity towards matrix metalloproteinases and high cross-linking efficiencies. We further provide a proof-of-concept for the usability of the hydrogels in inflammatory skin conditions by employing a drug release set-up simulating inflammatory flare-ups.
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Affiliation(s)
- Heidi Kyung Noddeland
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark; Explorative Formulation & Technologies, CMC Design and Development, LEO Pharma A/S, 2750 Ballerup, Denmark
| | - Marianne Lind
- Explorative Formulation & Technologies, CMC Design and Development, LEO Pharma A/S, 2750 Ballerup, Denmark
| | - Louise Bastholm Jensen
- Explorative Formulation & Technologies, CMC Design and Development, LEO Pharma A/S, 2750 Ballerup, Denmark
| | - Karsten Petersson
- Explorative Formulation & Technologies, CMC Design and Development, LEO Pharma A/S, 2750 Ballerup, Denmark
| | - Tine Skak-Nielsen
- Cells & Assays, In vitro Biology, LEO Pharma A/S, 2750 Ballerup, Denmark
| | - Flemming Hofmann Larsen
- Advanced Analytical and Structural Chemistry, CMC Design and Development, LEO Pharma A/S, 2750 Ballerup, Denmark
| | - Martin Malmsten
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark; Department of Physical Chemistry 1, University of Lund, SE-22100 Lund, Sweden
| | - Andrea Heinz
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark.
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15
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Radu ER, Voicu SI, Thakur VK. Polymeric Membranes for Biomedical Applications. Polymers (Basel) 2023; 15:polym15030619. [PMID: 36771921 PMCID: PMC9919920 DOI: 10.3390/polym15030619] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 01/16/2023] [Accepted: 01/21/2023] [Indexed: 01/27/2023] Open
Abstract
Polymeric membranes are selective materials used in a wide range of applications that require separation processes, from water filtration and purification to industrial separations. Because of these materials' remarkable properties, namely, selectivity, membranes are also used in a wide range of biomedical applications that require separations. Considering the fact that most organs (apart from the heart and brain) have separation processes associated with the physiological function (kidneys, lungs, intestines, stomach, etc.), technological solutions have been developed to replace the function of these organs with the help of polymer membranes. This review presents the main biomedical applications of polymer membranes, such as hemodialysis (for chronic kidney disease), membrane-based artificial oxygenators (for artificial lung), artificial liver, artificial pancreas, and membranes for osseointegration and drug delivery systems based on membranes.
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Affiliation(s)
- Elena Ruxandra Radu
- Department of Analytical Chemistry and Environmental Engineering, University Politehnica of Bucharest, 011061 Bucharest, Romania
- Advanced Polymers Materials Group, University Politehnica of Bucharest, 011061 Bucharest, Romania
| | - Stefan Ioan Voicu
- Department of Analytical Chemistry and Environmental Engineering, University Politehnica of Bucharest, 011061 Bucharest, Romania
- Advanced Polymers Materials Group, University Politehnica of Bucharest, 011061 Bucharest, Romania
- Correspondence: (S.I.V.); (V.K.T.)
| | - Vijay Kumar Thakur
- Biorefining and Advanced Materials Research Center, Scotland’s Rural College (SRUC), Kings Buildings, Edinburgh EH9 3JG, UK
- School of Engineering, University of Petroleum & Energy Studies (UPES), Dehradun 248007, Uttarakhand, India
- Centre for Research & Development, Chandigarh University, Mohali 140413, Punjab, India
- Correspondence: (S.I.V.); (V.K.T.)
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16
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Papadopoulou-Fermeli N, Lagopati N, Pippa N, Sakellis E, Boukos N, Gorgoulis VG, Gazouli M, Pavlatou EA. Composite Nanoarchitectonics of Photoactivated Titania-Based Materials with Anticancer Properties. Pharmaceutics 2022; 15:pharmaceutics15010135. [PMID: 36678763 PMCID: PMC9864881 DOI: 10.3390/pharmaceutics15010135] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/23/2022] [Accepted: 12/26/2022] [Indexed: 01/04/2023] Open
Abstract
The synthesis of titania-based composite materials with anticancer potential under visible-light irradiation is the aim of this study. In specific, titanium dioxide (TiO2) nanoparticles (NPs) chemically modified with silver were embedded in a stimuli-responsive microgel (a crosslinked interpenetrating network (IP) network that was synthesized by poly (N-Isopropylacrylamide) and linear chains of polyacrylic acid sodium salt, forming composite particles. The ultimate goal of this research, and for our future plans, is to develop a drug-delivery system that uses optical fibers that could efficiently photoactivate NPs, targeting cancer cells. The produced Ag-TiO2 NPs, the microgel and the composite materials were characterized through X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), micro-Raman spectroscopy, ultraviolet-visible spectroscopy (UV-Vis), dynamic light scattering (DLS) and transmission electron microscopy (TEM). Our results indicated that Ag-TiO2 NPs were successfully embedded within the thermoresponsive microgel. Either Ag-TiO2 NPs or the composite materials exhibited high photocatalytic degradation efficiency on the pollutant rhodamine B and significant anticancer potential under visible-light irradiation.
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Affiliation(s)
- Nefeli Papadopoulou-Fermeli
- Laboratory of General Chemistry, School of Chemical Engineering, National Technical University of Athens, Zografou Campus, 15789 Zografou, Greece
| | - Nefeli Lagopati
- Laboratory of General Chemistry, School of Chemical Engineering, National Technical University of Athens, Zografou Campus, 15789 Zografou, Greece
- Laboratory of Biology, Department of Basic Medical Sciences, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Laboratory of Histology-Embryology, Molecular Carcinogenesis Group, Department of Basic Medical Sciences, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Natassa Pippa
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, 15771 Athens, Greece
| | - Elias Sakellis
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, 15310 Agia Paraskevi, Greece
| | - Nikos Boukos
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, 15310 Agia Paraskevi, Greece
| | - Vassilis G. Gorgoulis
- Laboratory of Histology-Embryology, Molecular Carcinogenesis Group, Department of Basic Medical Sciences, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
- Clinical Molecular Pathology, Medical School, University of Dundee, Dundee DD1 9SY, UK
- Molecular and Clinical Cancer Sciences, Manchester Cancer Research Centre, Manchester Academic Health Sciences Centre, University of Manchester, Manchester M20 4GJ, UK
- Center for New Biotechnologies and Precision Medicine, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Faculty of Health and Medical Sciences, University of Surrey, Guildford GU2 7YH, UK
| | - Maria Gazouli
- Laboratory of Biology, Department of Basic Medical Sciences, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- School of Science and Technology, Hellenic Open University, 26335 Patra, Greece
| | - Evangelia A. Pavlatou
- Laboratory of General Chemistry, School of Chemical Engineering, National Technical University of Athens, Zografou Campus, 15789 Zografou, Greece
- Correspondence: ; Tel.: +30-210-772-3110
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17
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Moakes RJA, Grover LM, Robinson TE. Can We Structure Biomaterials to Spray Well Whilst Maintaining Functionality? BIOENGINEERING (BASEL, SWITZERLAND) 2022; 10:bioengineering10010003. [PMID: 36671575 PMCID: PMC9855191 DOI: 10.3390/bioengineering10010003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/14/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022]
Abstract
Structured fluid biomaterials, including gels, creams, emulsions and particle suspensions, are used extensively across many industries, including great interest within the medical field as controlled release vehicles to improve the therapeutic benefit of delivered drugs and cells. Colloidal forces within these materials create multiscale cohesive interactions, giving rise to intricate microstructures and physical properties, exemplified by increasingly complex mathematical descriptions. Yield stresses and viscoelasticity, typically arising through the material microstructure, vastly improve site-specific retention, and protect valuable therapeutics during application. One powerful application route is spraying, a convenient delivery method capable of applying a thin layer of material over geometrically uneven surfaces and hard-to-reach anatomical locations. The process of spraying is inherently disruptive, breaking a bulk fluid in successive steps into smaller elements, applying multiple forces over several length scales. Historically, spray research has focused on simple, inviscid solutions and dispersions, far from the complex microstructures and highly viscoelastic properties of concentrated colloidal biomaterials. The cohesive forces in colloidal biomaterials appear to conflict with the disruptive forces that occur during spraying. This review explores the physical bass and mathematical models of both the multifarious material properties engineered into structured fluid biomaterials and the disruptive forces imparted during the spray process, in order to elucidate the challenges and identify opportunities for rational design of sprayable, structured fluid biomaterials.
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18
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Kaptan Y, Güvenilir Y. Enzymatic PCL-grafting to NH 2-end grouped silica and development of microspheres for pH-stimulated release of a hydrophobic model drug. Eur J Pharm Biopharm 2022; 181:60-78. [PMID: 36347484 DOI: 10.1016/j.ejpb.2022.11.001] [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: 06/23/2022] [Revised: 10/24/2022] [Accepted: 11/01/2022] [Indexed: 11/07/2022]
Abstract
This study set out to evaluate novel PCL-based silica containing nanohybrids as the polymer matrix in a hydrophobic drug-loaded microsphere system. Nanohybrids were synthesized by PCL-grafting to NH2-end grouped silica by in situ enzymatic ring opening polymerization of ε-caprolactone. Molecular weight and monomer conversion, PCL grafting percentage, thermal properties and crystallinity of the nanohybrids were determined by 1H NMR, TGA, DSC and XRD. Synthesized nanohybrids had low crystallinity percentage (32 and 39 %) and molecular weight (4800 and 8700 g/mol), promising for controlled drug release applications. The nanohybrids were used for fabrication of trans-chalcone-loaded microspheres by O/W single emulsion solvent evaporation. Mean particle diameter of the microspheres were between 15 and 30 µm. The result of release studies showed that optimum microsphere formulations (AP4 and A2, respectively) had 61 and 64 % encapsulation efficiency. One of the more significant findings to emerge from this investigation is that TC release was extended to 16 and 37 days, in a controlled manner. TC release was significantly enhanced in acidic pH media (pH 3.6 and 5.6) indicating pH-dependent release from nanohybrid microspheres; releasing 80-100 % of the loaded drug in 4-14 days. Drug/polymer interactions and molecular structures were investigated by FT-IR spectroscopy and DSC analysis. According to the results obtained, enzymatically synthesized nanohybrids have potential for pH-dependent release of the model drug, trans-chalcone.
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Affiliation(s)
- Yasemin Kaptan
- Istanbul Technical University, Department of Chemical Engineering, Istanbul Technical University, 34469 Maslak-Istanbul, Turkey.
| | - Yüksel Güvenilir
- Istanbul Technical University, Department of Chemical Engineering, Istanbul Technical University, 34469 Maslak-Istanbul, Turkey
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19
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Recent Advances in Stimuli-Responsive Doxorubicin Delivery Systems for Liver Cancer Therapy. Polymers (Basel) 2022; 14:polym14235249. [PMID: 36501642 PMCID: PMC9738136 DOI: 10.3390/polym14235249] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/21/2022] [Accepted: 11/28/2022] [Indexed: 12/05/2022] Open
Abstract
Doxorubicin (DOX) is one of the most commonly used drugs in liver cancer. Unfortunately, the traditional chemotherapy with DOX presents many limitations, such as a systematic release of DOX, affecting both tumor tissue and healthy tissue, leading to the apparition of many side effects, multidrug resistance (MDR), and poor water solubility. Furthermore, drug delivery systems' responsiveness has been intensively studied according to the influence of different internal and external stimuli on the efficiency of therapeutic drugs. In this review, we discuss both internal stimuli-responsive drug-delivery systems, such as redox, pH and temperature variation, and external stimuli-responsive drug-delivery systems, such as the application of magnetic, photo-thermal, and electrical stimuli, for the controlled release of Doxorubicin in liver cancer therapy, along with the future perspectives of these smart delivery systems in liver cancer therapy.
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20
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Grebinyk A, Prylutska S, Grebinyk S, Ponomarenko S, Virych P, Chumachenko V, Kutsevol N, Prylutskyy Y, Ritter U, Frohme M. Drug delivery with a pH-sensitive star-like dextran-graft polyacrylamide copolymer. NANOSCALE ADVANCES 2022; 4:5077-5088. [PMID: 36504750 PMCID: PMC9680934 DOI: 10.1039/d2na00353h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 09/29/2022] [Indexed: 06/17/2023]
Abstract
The development of precision cancer medicine relies on novel formulation strategies for targeted drug delivery to increase the therapeutic outcome. Biocompatible polymer nanoparticles, namely dextran-graft-polyacrylamide (D-g-PAA) copolymers, represent one of the innovative non-invasive approaches for drug delivery applications in cancer therapy. In this study, the star-like D-g-PAA copolymer in anionic form (D-g-PAAan) was developed for pH-triggered targeted drug delivery of the common chemotherapeutic drugs - doxorubicin (Dox) and cisplatin (Cis). The initial D-g-PAA copolymer was synthesized by the radical graft polymerization method, and then alkaline-hydrolyzed to get this polymer in anionic form for further use for drug encapsulation. The acidification of the buffer promoted the release of loaded drugs. D-g-PAAan nanoparticles increased the toxic potential of the drugs against human and mouse lung carcinoma cells (A549 and LLC), but not against normal human lung cells (HEL299). The drug-loaded D-g-PAAan-nanoparticles promoted further oxidative stress and apoptosis induction in LLC cells. D-g-PAAan-nanoparticles improved Dox accumulation and drugs' toxicity in a 3D LLC multi-cellular spheroid model. The data obtained indicate that the strategy of chemotherapeutic drug encapsulation within the branched D-g-PAAan nanoparticle allows not only to realize pH-triggered drug release but also to potentiate its cytotoxic, prooxidant and proapoptotic effects against lung carcinoma cells.
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Affiliation(s)
- Anna Grebinyk
- Division Molecular Biotechnology and Functional Genomics, Technical University of Applied Sciences Wildau Hochschulring 1 15745 Wildau Germany
| | - Svitlana Prylutska
- National University of Life and Environmental Science of Ukraine Heroiv Oborony Str., 15 03041 Kyiv Ukraine
| | - Sergii Grebinyk
- Division Molecular Biotechnology and Functional Genomics, Technical University of Applied Sciences Wildau Hochschulring 1 15745 Wildau Germany
| | - Stanislav Ponomarenko
- Taras Shevchenko National University of Kyiv Volodymyrska Str., 64 01601 Kyiv Ukraine
| | - Pavlo Virych
- Taras Shevchenko National University of Kyiv Volodymyrska Str., 64 01601 Kyiv Ukraine
| | - Vasyl Chumachenko
- Taras Shevchenko National University of Kyiv Volodymyrska Str., 64 01601 Kyiv Ukraine
| | - Nataliya Kutsevol
- Taras Shevchenko National University of Kyiv Volodymyrska Str., 64 01601 Kyiv Ukraine
- Institute Charles Sadron 23 Rue du Loess 67200 Strasbourg France
| | - Yuriy Prylutskyy
- Taras Shevchenko National University of Kyiv Volodymyrska Str., 64 01601 Kyiv Ukraine
| | - Uwe Ritter
- Technical University of Ilmenau, Institute of Chemistry and Biotechnology Weimarer Str., 25 98693 Ilmenau Germany
| | - Marcus Frohme
- Division Molecular Biotechnology and Functional Genomics, Technical University of Applied Sciences Wildau Hochschulring 1 15745 Wildau Germany
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21
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Machado AR, Silva PMP, Vicente AA, Souza-Soares LA, Pinheiro AC, Cerqueira MA. Alginate Particles for Encapsulation of Phenolic Extract from Spirulina sp. LEB-18: Physicochemical Characterization and Assessment of In Vitro Gastrointestinal Behavior. Polymers (Basel) 2022; 14:4759. [PMID: 36365752 PMCID: PMC9654036 DOI: 10.3390/polym14214759] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/31/2022] [Accepted: 11/04/2022] [Indexed: 11/12/2023] Open
Abstract
Encapsulation can be used as a strategy to protect and control the release of bioactive extracts. In this work, an extract from Spirulina sp. LEB-18, rich in phenolic compounds, was encapsulated in biopolymeric particles (i.e., composed of alginate) and characterized concerning their thermal behavior using differential scanning calorimetry (DSC), size, morphology, swelling index (S), and encapsulation efficiency (EE%); the release profile of the phenolic compounds at different pHs and the particle behavior under in vitro gastrointestinal digestion were also evaluated. It was shown that it is possible to encapsulate the phenolic extract from Spirulina sp. LEB-18 in alginate particles with high encapsulation efficiency (88.97%). It was also observed that the particles are amorphous and that the encapsulated phenolic compounds were released at a pH 7.2 but not at pH 1.5, which means that the alginate particles are able to protect the phenolic compounds from the harsh stomach conditions but lose their integrity under intestinal pH conditions. Regarding bioaccessibility, it was observed that the encapsulated phenolic compounds showed higher bioaccessibility compared to phenolic compounds in free form. This work increases the knowledge about the behavior of alginate particles encapsulating phenolic compounds during in vitro gastrointestinal digestion. It also provides essential information for designing biopolymeric particle formulations encapsulating phenolic compounds for application in pharmaceutical and food products.
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Affiliation(s)
- Adriana R. Machado
- School of Chemistry and Food, Federal University of Rio Grande, Rio Grande 96203-900, Brazil
- Centre of Biological Engineering (CEB), Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal
- Associate Laboratory (LABBELS), Braga/Guimarães, Portugal
| | - Pedro M. P. Silva
- Centre of Biological Engineering (CEB), Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal
- Associate Laboratory (LABBELS), Braga/Guimarães, Portugal
- International Iberian Nanotechnology Laboratory (INL), Av. Mestre José Veiga, 4715-330 Braga, Portugal
| | - António A. Vicente
- Centre of Biological Engineering (CEB), Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal
- Associate Laboratory (LABBELS), Braga/Guimarães, Portugal
| | - Leonor A. Souza-Soares
- School of Chemistry and Food, Federal University of Rio Grande, Rio Grande 96203-900, Brazil
| | - Ana C. Pinheiro
- Centre of Biological Engineering (CEB), Campus de Gualtar, University of Minho, 4710-057 Braga, Portugal
- Associate Laboratory (LABBELS), Braga/Guimarães, Portugal
| | - Miguel A. Cerqueira
- International Iberian Nanotechnology Laboratory (INL), Av. Mestre José Veiga, 4715-330 Braga, Portugal
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22
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Initial Steps towards Spatiotemporal Signaling through Biomaterials Using Click-to-Release Chemistry. Pharmaceutics 2022; 14:pharmaceutics14101991. [PMID: 36297427 PMCID: PMC9610979 DOI: 10.3390/pharmaceutics14101991] [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: 08/31/2022] [Revised: 09/12/2022] [Accepted: 09/14/2022] [Indexed: 11/16/2022] Open
Abstract
The process of wound healing is a tightly controlled cascade of events, where severe skin wounds are resolved via scar tissue. This fibrotic response may be diminished by applying anti-fibrotic factors to the wound, thereby stimulating regeneration over scarring. The development of tunable biomaterials that enable spatiotemporal control over the release of anti-fibrotics would greatly benefit wound healing. Herein, harnessing the power of click-to-release chemistry for regenerative medicine, we demonstrate the feasibility of such an approach. For this purpose, one side of a bis-N-hydroxysuccinimide-trans-cyclooctene (TCO) linker was functionalized with human epidermal growth factor (hEGF), an important regulator during wound healing, whereas on the other side a carrier protein was conjugated—either type I collagen scaffolds or bovine serum albumin (BSA). Mass spectrometry demonstrated the coupling of hEGF–TCO and indicated a release following exposure to dimethyl-tetrazine. Type I collagen scaffolds could be functionalized with the hEGF–TCO complex as demonstrated by immunofluorescence staining and Western blotting. The hEGF–TCO complex was also successfully ligated to BSA and the partial release of hEGF upon dimethyl-tetrazine exposure was observed through Western blotting. This work establishes the potential of click-to-release chemistry for the development of pro-regenerative biomaterials.
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23
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Asadi S, Nelson AZ, Doyle PS. Producing shape-engineered alginate particles using viscoplastic fluids. SOFT MATTER 2022; 18:6848-6856. [PMID: 36043375 DOI: 10.1039/d2sm00621a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Non-spherical hydrogel particles are of fundamental interest and can find use in a variety of applications ranging from pharmaceuticals to biomedical to food. Here, we report a new method that leverages the yield stress property of viscoplastic fluids to synthesize shape-engineered alginate particles. By dripping an aqueous viscoplastic solution composed of sodium alginate and a yield-stress material into an ionic gelation bath, droplets are controllably deformed and crosslinked, producing a wide assortment of shapes. We find that by tuning the yield stress of the solution and the nozzle tip orientation, a range of shapes from symmetric and near-spherical, to asymmetric and anisotropic (e.g., egg-, rice grain-, arc-, ring-, snail shell-, tear-, and tadpole-like) can be produced. We explain our observations using scaling analysis of the forces exerted on the droplet at different stages of particle production. We show that the main factors that determine the degree of droplet deformation during bath entry and the final appearance of the alginate particles are the initial shape of the droplets, the timescales of the viscoplastic fluid relaxation versus the crosslinking reaction, and the physico-chemical properties of the yield-stress material.
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Affiliation(s)
- Sima Asadi
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
| | - Arif Z Nelson
- Critical Analytics for Manufacturing Personalized-Medicine, Singapore-MIT Alliance for Research and Technology, Singapore 138602, Singapore
| | - Patrick S Doyle
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
- Critical Analytics for Manufacturing Personalized-Medicine, Singapore-MIT Alliance for Research and Technology, Singapore 138602, Singapore
- Harvard Medical School Initiative for RNA Medicine, Boston, MA 02215, USA
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24
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Perez SJLP, Montalbo RCK, Concio CAP, Madrid LLB, Arco SD. Thermoresponsive oligo(ethylene glycol) methyl ether methacrylate homopolymers via RAFT polymerization in 1-alkyl-3-methylimidazolium hexafluorophosphate ionic liquids. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2022. [DOI: 10.1080/10601325.2022.2117054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Ser John Lynon P. Perez
- Natural Sciences Research Institute, University of the Philippines Diliman, Quezon City, Philippines
| | | | - Christian Angelo P. Concio
- Synthetic Organic Chemistry Laboratory Institute of Chemistry, University of the Philippines Diliman, Quezon City, Philippines
| | - Ludhovik Luiz B. Madrid
- Synthetic Organic Chemistry Laboratory Institute of Chemistry, University of the Philippines Diliman, Quezon City, Philippines
| | - Susan D. Arco
- Natural Sciences Research Institute, University of the Philippines Diliman, Quezon City, Philippines
- Synthetic Organic Chemistry Laboratory Institute of Chemistry, University of the Philippines Diliman, Quezon City, Philippines
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25
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Bercea M. Bioinspired Hydrogels as Platforms for Life-Science Applications: Challenges and Opportunities. Polymers (Basel) 2022; 14:polym14122365. [PMID: 35745941 PMCID: PMC9229923 DOI: 10.3390/polym14122365] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/08/2022] [Accepted: 06/09/2022] [Indexed: 12/13/2022] Open
Abstract
Hydrogels, as interconnected networks (polymer mesh; physically, chemically, or dynamic crosslinked networks) incorporating a high amount of water, present structural characteristics similar to soft natural tissue. They enable the diffusion of different molecules (ions, drugs, and grow factors) and have the ability to take over the action of external factors. Their nature provides a wide variety of raw materials and inspiration for functional soft matter obtained by complex mechanisms and hierarchical self-assembly. Over the last decade, many studies focused on developing innovative and high-performance materials, with new or improved functions, by mimicking biological structures at different length scales. Hydrogels with natural or synthetic origin can be engineered as bulk materials, micro- or nanoparticles, patches, membranes, supramolecular pathways, bio-inks, etc. The specific features of hydrogels make them suitable for a wide variety of applications, including tissue engineering scaffolds (repair/regeneration), wound healing, drug delivery carriers, bio-inks, soft robotics, sensors, actuators, catalysis, food safety, and hygiene products. This review is focused on recent advances in the field of bioinspired hydrogels that can serve as platforms for life-science applications. A brief outlook on the actual trends and future directions is also presented.
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Affiliation(s)
- Maria Bercea
- "Petru Poni" Institute of Macromolecular Chemistry, 700487 Iasi, Romania
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26
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Controlled Synthesis and Photoresponsive Properties of Spiropyran End-Functionalized Poly(vinyl ether)s. CRYSTALS 2022. [DOI: 10.3390/cryst12050742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Due to the need to develop smart materials for a variety of applications such as catalysts and drug delivery, the development of photoresponsive polymers is receiving increasing attention. In particular, the photoisomerization of spiropyran (SP), unlike many other photoresponsive compounds, has attracted attention because it dramatically changes not only the molecular structure but also the polarity of the molecule. However, in most cases where SP is used as a photoresponsive functional group, SP is introduced in the side chain of the polymer, and few cases have been reported in which SP is introduced at the end of the polymer chain. Therefore, we designed a new amphipathic poly(vinyl ether) with an SP moiety at the end of the polymer chain. First, an initiator having an SP moiety was synthesized and used for living cationic polymerization to synthesize a poly(vinyl ether) bearing an SP moiety at the end of the polymer chain. Furthermore, we investigated the photoresponsive properties of the obtained polymers, we found that self-assembly of the amphiphilic polymers could be controlled by photoirradiation.
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27
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Li YL, Chen CY. Near-Infrared Light-Remote Localized Drug Delivery Systems Based on Zwitterionic Polymer Nanofibers for Combination Therapy. Polymers (Basel) 2022; 14:polym14091860. [PMID: 35567029 PMCID: PMC9100176 DOI: 10.3390/polym14091860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 02/01/2023] Open
Abstract
Localized drug delivery systems (LDDS) have gained great interests because they can directly treat the tumors and minimize systematic toxicity, and maximize drug action by controlling release precisely at the tumor site. However, the resistance of the non-specific adsorption of biomolecules is also important to alleviate the inflammatory reactions and avoid the decrease in performance of LDDS. In this study, we develop a near infrared (NIR) light-triggered nanofibrous delivery system consisting of zwitterionic poly(2-methacryloyloxyethyl phosphorylcholine)-b-poly(ε-caprolactone) (PMPC-b-PCL) encapsulated with indocyanine green (ICG) and doxorubicin (DOX) for dual photothermal therapy and chemotherapy. The nanofibrous mat shows hydrophilic characteristics and good antifouling performance. Under mild NIR irradiation, ICG could convert NIR light into thermal energy that elevates the surrounding temperature above 45 °C. This thermal energy also markedly accelerates the DOX release from the nanofibrous mat due to softening of the nanofibers, indicating the drug release could be controlled and switched on/off by light-triggering. Moreover, this light-triggered thermal energy and releasing behavior contribute to enhancing the cell lethality. Intracellular DOX distribution confirms the more drugs release upon light irradiation. All results demonstrate the developed light-triggered drug release nanofibers as LDDS are biocompatible and antifouling as well as has the superior combinational chemotherapy/photothermal therapy.
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Affiliation(s)
| | - Ching-Yi Chen
- Correspondence: ; Tel.: +886-5-272-0411 (ext. 33409)
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28
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Hassan SU, Khalid I, Hussain L, Barkat K, Khan IU. Development and Evaluation of pH-Responsive Pluronic F 127 Co-Poly- (Acrylic Acid) Biodegradable Nanogels for Topical Delivery of Terbinafine HCL. Dose Response 2022; 20:15593258221095977. [PMID: 35558872 PMCID: PMC9087256 DOI: 10.1177/15593258221095977] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/22/2022] [Accepted: 04/01/2022] [Indexed: 11/29/2022] Open
Abstract
Research aimed to develop and evaluate biodegradable, pH-responsive chemically
cross-linked Pluronic F127 co-poly- (acrylic acid) nanogels for dermal delivery
of Terbinafine HCL (TBH) to increase its permeability and as a new approach to
treat skin fungal infections. TBH-loaded nanogels were successfully synthesized
from acrylic acid (AA) and Pluronic F127 by free-radical copolymerization
technique using N,N′-methylene bisacrylamide (MBA) as crosslinker and ammonium
persulphate (APS) as initiator. Prepared nanogels exhibited 93.51% drug
entrapment efficiency (DEE), 45 nm particle size, pH-dependent swelling and
release behavior. Nanogels were characterized using different physicochemical
techniques. The ex-vivo skin retention studies through rat skin
showed about 42.34% drug retention from nanogels while 1% Lamisil cream
(marketed product) showed about 26.56% drug retention. Moreover, skin irritation
studies showed that nanogels were not irritating. Nanogels showed improved
in-vitro antifungal activity against Candida
albicans compared to commercial product. In-vivo
studies on rats infected with Candida albicans confirmed
superiority of nanogels over 1% Lamisil for eradication of fungal infection.
This confirms that TBH loaded in Pluronic F127 co-poly-(acrylic acid) nanogels
provided greater targetibility and cure rates of poorly soluble TBH in animal
model and hence nanogels could be a potential carrier for effective topical
delivery of TBH for skin fungal infection treatment.
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Affiliation(s)
- Shams ul Hassan
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Pakistan
| | - Ikrima Khalid
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Pakistan
| | - Liaqat Hussain
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Pakistan
| | - Kashif Barkat
- Faculty of Pharmacy, The University of Lahore, Pakistan
| | - Ikram Ullah Khan
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Pakistan
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29
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Wang C, Sani ES, Gao W. Wearable Bioelectronics for Chronic Wound Management. ADVANCED FUNCTIONAL MATERIALS 2022; 32:2111022. [PMID: 36186921 PMCID: PMC9518812 DOI: 10.1002/adfm.202111022] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Chronic wounds are a major healthcare issue and can adversely affect the lives of millions of patients around the world. The current wound management strategies have limited clinical efficacy due to labor-intensive lab analysis requirements, need for clinicians' experiences, long-term and frequent interventions, limiting therapeutic efficiency and applicability. The growing field of flexible bioelectronics enables a great potential for personalized wound care owing to its advantages such as wearability, low-cost, and rapid and simple application. Herein, recent advances in the development of wearable bioelectronics for monitoring and management of chronic wounds are comprehensively reviewed. First, the design principles and the key features of bioelectronics that can adapt to the unique wound milieu features are introduced. Next, the current state of wound biosensors and on-demand therapeutic systems are summarized and highlighted. Furthermore, we discuss the design criteria of the integrated closed loop devices. Finally, the future perspectives and challenges in wearable bioelectronics for wound care are discussed.
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Affiliation(s)
- Canran Wang
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125, USA
| | - Ehsan Shirzaei Sani
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125, USA
| | - Wei Gao
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125, USA
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30
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Singh K, Biharee A, Vyas A, Thareja S, Jain AK. Recent Advancement of Polymersomes as Drug Delivery Carrier. Curr Pharm Des 2022; 28:1621-1631. [PMID: 35418282 DOI: 10.2174/1381612828666220412103552] [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: 10/07/2021] [Accepted: 02/02/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Biomedical applications of polymersomes have been explored, including drug and gene delivery, insulin delivery, hemoglobin delivery, the delivery of anticancer agents, and various diagnostic purposes. OBJECTIVES Polymersomes, which are self-assembled amphiphilic block copolymers, have received a lot of attention in drug delivery approaches. This review represents the methods of preparation of polymersomes including thin-film rehydration, electroformation, double emulsion, gel-assisted rehydration, PAPYRUS method, and solvent injection methods including various therapeutic applications of polymersomes. METHODS Data we searched from PubMed, Google Scholar, and Science Direct through searching of keywords: Polymersomes, methods of preparation, amphiphilic block copolymers, anticancer drug delivery Results: Polymersomes provide both hydrophilic and hydrophobic drug delivery to a targeted site with an increase in the stability of the formulation and reduce the cytotoxic side effects of drugs. CONCLUSION A wide range of biological applications, including drug and gene delivery, insulin delivery, hemoglobin delivery, delivery of anticancer agents as well as in various diagnostic purposes. Recently, polymersomes have been used more frequently because of their stability, reducing the encapsulated drug's leakage, site-specific drug delivery, and increasing the bioavailability of the drugs and different diagnostic purposes. The liposomes encapsulate only hydrophilic drugs, but polymersomes encapsulate both hydrophilic and hydrophobic drugs in their cores.
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Affiliation(s)
- Kuldeep Singh
- School of Pharmaceutical Sciences, Guru Ghasidas Central University, Bilaspur- 495 009 (C.G.), India
| | - Avadh Biharee
- School of Pharmaceutical Sciences, Guru Ghasidas Central University, Bilaspur- 495 009 (C.G.), India.,Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Bathinda- 15100 (Pb), India
| | - Amber Vyas
- University Institute of Pharmacy, Pt. Ravishankar Shukla University, Raipur- 492010(C.G.), India
| | - Suresh Thareja
- Laboratory of Natural Products, Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Bathinda- 15100 (Pb), India
| | - Akhlesh Kumar Jain
- School of Pharmaceutical Sciences, Guru Ghasidas Central University, Bilaspur- 495 009 (C.G.), India
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31
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Membrane-active diacylglycerol-terminated thermoresponsive polymers: RAFT synthesis and biocompatibility evaluation. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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32
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Jampilek J, Kralova K. Advances in Nanostructures for Antimicrobial Therapy. MATERIALS 2022; 15:ma15072388. [PMID: 35407720 PMCID: PMC8999898 DOI: 10.3390/ma15072388] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/16/2022] [Accepted: 03/22/2022] [Indexed: 02/07/2023]
Abstract
Microbial infections caused by a variety of drug-resistant microorganisms are more common, but there are fewer and fewer approved new antimicrobial chemotherapeutics for systemic administration capable of acting against these resistant infectious pathogens. Formulation innovations of existing drugs are gaining prominence, while the application of nanotechnologies is a useful alternative for improving/increasing the effect of existing antimicrobial drugs. Nanomaterials represent one of the possible strategies to address this unfortunate situation. This review aims to summarize the most current results of nanoformulations of antibiotics and antibacterial active nanomaterials. Nanoformulations of antimicrobial peptides, synergistic combinations of antimicrobial-active agents with nitric oxide donors or combinations of small organic molecules or polymers with metals, metal oxides or metalloids are discussed as well. The mechanisms of actions of selected nanoformulations, including systems with magnetic, photothermal or photodynamic effects, are briefly described.
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Affiliation(s)
- Josef Jampilek
- Department of Analytical Chemistry, Faculty of Natural Sciences, Comenius University, Ilkovicova 6, 842 15 Bratislava, Slovakia
- Department of Chemical Biology, Faculty of Science, Palacky University Olomouc, Slechtitelu 27, 783 71 Olomouc, Czech Republic
- Correspondence:
| | - Katarina Kralova
- Institute of Chemistry, Faculty of Natural Sciences, Comenius University, Ilkovicova 6, 842 15 Bratislava, Slovakia;
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33
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Yadav R, Kumar S, Kumar K, Venkatesu P. Gold nanospheres/nanorods as highly promising candidates for the hydrophilic/hydrophobic balance of poly(N-vinylcaprolactam): A thoughtful design of nanocomposites. NEW J CHEM 2022. [DOI: 10.1039/d2nj00709f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A thermally induced solubility alterations of widely accepted thermoresponsive polymer poly (N-vinylcaprolactam) (PVCL) tethered to gold nanoparticles (AuNPs) surface is characterized by different biophysical techniques such as steady state fluorescence,...
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34
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Asad MI, Khan D, Rehman AU, Elaissari A, Ahmed N. Development and In Vitro/In Vivo Evaluation of pH-Sensitive Polymeric Nanoparticles Loaded Hydrogel for the Management of Psoriasis. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:3433. [PMID: 34947782 PMCID: PMC8705938 DOI: 10.3390/nano11123433] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/09/2021] [Accepted: 12/14/2021] [Indexed: 02/06/2023]
Abstract
Methotrexate (MTX), the gold standard against psoriasis, poses severe problems when administered systemically viz increased toxicity, poor solubility and adverse reactions. Hence, a topical formulation of MTX for the management of psoriasis can be an effective approach. The present study aimed to develop an MTX based nanoparticle-loaded chitosan hydrogel for evaluating its potential efficacy in an imiquimod-induced psoriatic mice model. MTX-NPs loaded hydrogel was prepared and optimized using the o/w emulsion solvent evaporation method. Particle size, zeta potential, entrapment efficiency, in vitro drug release, ex vivo permeation, skin irritation and deposition studies were performed. Psoriatic Area and Severity Index (PASI) score/histopathological examinations were conducted to check the antipsoriatic potential of MTX-NPs loaded hydrogel using an imiquimod (IMQ)-induced psoriatic model. Optimized MTX-NPs showed a particle size of 256.4 ± 2.17 nm and encapsulation efficiency of 86 ± 0.03%. MTX-NPs loaded hydrogel displayed a 73 ± 1.21% sustained drug release in 48 h. Ex vivo permeation study showed only 19.95 ± 1.04 µg/cm2 of drug permeated though skin in 24 h, while epidermis retained 81.33% of the drug. A significant decrease in PASI score with improvement to normalcy of mice skin was observed. The developed MTX-NPs hydrogel displayed negligible signs of mild hyperkeratosis and parakeratosis, while histopathological studies showed healing signs of mice skin. So, the MTX-NPs loaded hydrogel can be a promising delivery system against psoriasis.
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Affiliation(s)
- Muhammad Imran Asad
- Department of Pharmacy, Quaid-i-Azam University, Islamabad 45320, Pakistan; (M.I.A.); (D.K.); (A.u.R.)
| | - Dildar Khan
- Department of Pharmacy, Quaid-i-Azam University, Islamabad 45320, Pakistan; (M.I.A.); (D.K.); (A.u.R.)
| | - Asim ur Rehman
- Department of Pharmacy, Quaid-i-Azam University, Islamabad 45320, Pakistan; (M.I.A.); (D.K.); (A.u.R.)
| | | | - Naveed Ahmed
- Department of Pharmacy, Quaid-i-Azam University, Islamabad 45320, Pakistan; (M.I.A.); (D.K.); (A.u.R.)
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Gomes A, Aguiar L, Ferraz R, Teixeira C, Gomes P. The Emerging Role of Ionic Liquid-Based Approaches for Enhanced Skin Permeation of Bioactive Molecules: A Snapshot of the Past Couple of Years. Int J Mol Sci 2021; 22:11991. [PMID: 34769430 PMCID: PMC8584570 DOI: 10.3390/ijms222111991] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 11/03/2021] [Indexed: 12/12/2022] Open
Abstract
Topical and transdermal delivery systems are of undeniable significance and ubiquity in healthcare, to facilitate the delivery of active pharmaceutical ingredients, respectively, onto or across the skin to enter systemic circulation. From ancient ointments and potions to modern micro/nanotechnological devices, a variety of approaches has been explored over the ages to improve the skin permeation of diverse medicines and cosmetics. Amongst the latest investigational dermal permeation enhancers, ionic liquids have been gaining momentum, and recent years have been prolific in this regard. As such, this review offers an outline of current methods for enhancing percutaneous permeation, highlighting selected reports where ionic liquid-based approaches have been investigated for this purpose. Future perspectives on use of ionic liquids for topical delivery of bioactive peptides are also presented.
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Affiliation(s)
- Ana Gomes
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, P-4169-007 Porto, Portugal; (A.G.); (L.A.); (R.F.); (C.T.)
| | - Luísa Aguiar
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, P-4169-007 Porto, Portugal; (A.G.); (L.A.); (R.F.); (C.T.)
| | - Ricardo Ferraz
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, P-4169-007 Porto, Portugal; (A.G.); (L.A.); (R.F.); (C.T.)
- Ciências Químicas e das Biomoléculas, CISA, Escola Superior de Saúde, Politécnico do Porto, R. Dr. António Bernardino de Almeida 400, P-4200-072 Porto, Portugal
| | - Cátia Teixeira
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, P-4169-007 Porto, Portugal; (A.G.); (L.A.); (R.F.); (C.T.)
| | - Paula Gomes
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, P-4169-007 Porto, Portugal; (A.G.); (L.A.); (R.F.); (C.T.)
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Ogueri KS, Shamblin SL. Osmotic-controlled release oral tablets: technology and functional insights. Trends Biotechnol 2021; 40:606-619. [PMID: 34689998 DOI: 10.1016/j.tibtech.2021.10.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/30/2021] [Accepted: 10/01/2021] [Indexed: 12/20/2022]
Abstract
In recent years, oral osmotic tablets have sparked a therapeutic paradigm for controlled-release dosage forms due to their intrinsic insensitivity to physiological and physicochemical factors. Despite these benefits, the design of an optimal osmotic technology is precluded by various challenges. These limitations include manufacturing complexity, the lack of understanding of the functional mechanics, and inadequate optimization for the desired bio-performance. This paper systematically reviews the development of an osmotic-driven drug delivery system and the strategy for a zero-order release profile with an emphasis on swellable core technology. We discuss the applicability of the various types of osmotic tablets, their suitability to specific needs, and factors that drive the technology selection. Finally, we review the challenges, opportunities, and future perspectives associated with osmotic tablets.
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Makhija P, Kathuria H, Sethi G, Grobben B. Polymeric Hydrogels for Controlled Release of Black Tea and Coffee Extracts for Topical Applications. Gels 2021; 7:174. [PMID: 34698154 PMCID: PMC8544385 DOI: 10.3390/gels7040174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/15/2021] [Accepted: 10/19/2021] [Indexed: 11/21/2022] Open
Abstract
Tea and coffee are popular beverages. Both are also used in topical applications, such as ultraviolet (UV) protection, anti-aging, and wound healing. However, the impact of tea and coffee extract on skin cells is minimally explored. This study investigated the direct exposure of tea and coffee extract on skin cells using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay. It was found that direct exposure of tea and coffee to skin cells can be toxic at a high dose on prolonged exposure (72 h). Therefore, it was hypothesized that a formulation providing a controlled release of tea and coffee could improve their skin compatibility. Thermally cross-linked poly(acrylic acid) hydrogels loaded with tea and coffee extracts (with and without milk) were formulated and optimized. The release profiles of these hydrogels were studied at varying loading efficiency. Milk addition with tea extract retarded the tea extract release from hydrogel while minimally affecting the coffee release. This effect was due to the molecular interaction of tea with milk components, showing changes in size, zeta potential, and polydispersity index. The release study best fitted the Korsmeyer-Peppas release model. Skin cells exposed to tea or coffee-loaded hydrogel showed normal skin cell morphology under fluorescence microscopic analysis. In conclusion, the hydrogels controlled the tea and coffee release and showed biocompatibility with skin cells. It can potentially be used for skin applications.
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Affiliation(s)
- Pooja Makhija
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Himanshu Kathuria
- Department of Pharmacy, National University of Singapore, Singapore 117543, Singapore;
- Nusmetic Pvt Ltd., Makerspace, i4 Building, 3 Research Link, Singapore 117602, Singapore
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Blk MD3, 16 Medical Drive, Singapore 117600, Singapore;
| | - Bert Grobben
- Budding Innovations Pvt Ltd., 06-02 Jellicoe Rd, Singapore 208766, Singapore
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Weibull Modeling of Controlled Drug Release from Ag-PMA Nanosystems. Polymers (Basel) 2021; 13:polym13172897. [PMID: 34502937 PMCID: PMC8434431 DOI: 10.3390/polym13172897] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 08/21/2021] [Accepted: 08/24/2021] [Indexed: 01/22/2023] Open
Abstract
Traditional pharmacotherapy suffers from multiple drawbacks that hamper patient treatment such as antibiotic resistances or low drug selectivity and toxicity during systemic applications. Some functional hybrid nanomaterials are designed to handle the drug release process under remote-control. More attention has recently been paid to synthetic polyelectrolytes for their intrinsic properties which allow them to rearrange into compact structures, ideal to be used as drug carriers or probes influencing biochemical processes. The presence of Ag nanoparticles (NPs) in the Poly methyl acrylate (PMA) matrix leads to an enhancement of drug release efficiency, even using a low-power laser whose wavelength is far from the Ag Surface Plasmon Resonance (SPR) peak. Further, compared to the colloids, the nanofiber-based drug delivery system has shown shorter response time and more precise control over the release rate. The efficiency and timing of involved drug release mechanisms has been estimated by the Weibull distribution function, whose parameters indicate that the release mechanism of nanofibers obeys Fick's first law while a non-Fickian character controlled by diffusion and relaxation of polymer chains occurs in the colloidal phase.
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