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Ahmed D, Puthussery H, Basnett P, Knowles JC, Lange S, Roy I. Controlled Delivery of Pan-PAD-Inhibitor Cl-Amidine Using Poly(3-Hydroxybutyrate) Microspheres. Int J Mol Sci 2021; 22:ijms222312852. [PMID: 34884657 PMCID: PMC8658019 DOI: 10.3390/ijms222312852] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/23/2021] [Accepted: 11/25/2021] [Indexed: 12/13/2022] Open
Abstract
This study deals with the process of optimization and synthesis of Poly(3-hydroxybutyrate) microspheres with encapsulated Cl-amidine. Cl-amidine is an inhibitor of peptidylarginine deiminases (PADs), a group of calcium-dependent enzymes, which play critical roles in a number of pathologies, including autoimmune and neurodegenerative diseases, as well as cancer. While Cl-amidine application has been assessed in a number of in vitro and in vivo models; methods of controlled release delivery remain to be investigated. P(3HB) microspheres have proven to be an effective delivery system for several compounds applied in antimicrobial, wound healing, cancer, and cardiovascular and regenerative disease models. In the current study, P(3HB) microspheres with encapsulated Cl-amidine were produced in a size ranging from ~4–5 µm and characterized for surface morphology, porosity, hydrophobicity and protein adsorption, in comparison with empty P(3HB) microspheres. Cl-amidine encapsulation in P(3HB) microspheres was optimized, and these were found to be less hydrophobic, compared with the empty microspheres, and subsequently adsorbed a lower amount of protein on their surface. The release kinetics of Cl-amidine from the microspheres were assessed in vitro and expressed as a function of encapsulation efficiency. There was a burst release of ~50% Cl-amidine in the first 24 h and a zero order release from that point up to 16 days, at which time point ~93% of the drug had been released. As Cl-amidine has been associated with anti-cancer effects, the Cl-amidine encapsulated microspheres were assessed for the inhibition of vascular endothelial growth factor (VEGF) expression in the mammalian breast cancer cell line SK-BR-3, including in the presence of the anti-proliferative drug rapamycin. The cytotoxicity of the combinatorial effect of rapamycin with Cl-amidine encapsulated P(3HB) microspheres was found to be 3.5% more effective within a 24 h period. The cells treated with Cl-amidine encapsulated microspheres alone, were found to have 36.5% reduction in VEGF expression when compared with untreated SK-BR-3 cells. This indicates that controlled release of Cl-amidine from P(3HB) microspheres may be effective in anti-cancer treatment, including in synergy with chemotherapeutic agents. Using controlled drug-delivery of Cl-amidine encapsulated in Poly(3-hydroxybutyrate) microspheres may be a promising novel strategy for application in PAD-associated pathologies.
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Affiliation(s)
- Dina Ahmed
- Tissue Architecture and Regeneration Research Group, School of Life Sciences, University of Westminster, London W1W 6XH, UK;
| | - Hima Puthussery
- School of Life Sciences, University of Westminster, London W1W 6XH, UK; (H.P.); (P.B.)
| | - Pooja Basnett
- School of Life Sciences, University of Westminster, London W1W 6XH, UK; (H.P.); (P.B.)
| | - Jonathan C. Knowles
- Department of Biomaterials and Tissue Engineering, Eastman Dental Institute, University College London, Royal Free Hospital, Rowland Hill Street, London NW3 2PF, UK;
| | - Sigrun Lange
- Tissue Architecture and Regeneration Research Group, School of Life Sciences, University of Westminster, London W1W 6XH, UK;
- Correspondence: emails: (S.L.); (I.R.); Tel.: +44-(0)207-911-5000 (ext. 64832) (S.L.); +44-(0)114-222-5962 (ext. 64096) (I.R.)
| | - Ipsita Roy
- Department of Materials Science and Engineering, Faculty of Engineering, University of Sheffield, Sheffield S10 2TN, UK
- Correspondence: emails: (S.L.); (I.R.); Tel.: +44-(0)207-911-5000 (ext. 64832) (S.L.); +44-(0)114-222-5962 (ext. 64096) (I.R.)
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Ene N, Vladu MG, Lupescu I, Ionescu AD, Vamanu E. The Production and Analysis of Biodegradable Polymers of Type of Medium-Chain-Length Polyhydroxyalkanoates (mcl-PHA) by Pseudomonas putida Strain for the Biomedical Engineering. Curr Pharm Biotechnol 2021; 23:1109-1117. [PMID: 34375190 DOI: 10.2174/1389201022666210810114117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 05/23/2021] [Accepted: 06/07/2021] [Indexed: 01/10/2023]
Abstract
BACKGROUND Polyhydroxyalkanoates (PHAs) are bacteria-synthetized biopolymers under unbalanced growth conditions. These biopolymers are considered potential biomaterials for future applications for their biocompatibility and biodegradable features and potential biomaterials for future applications for their biocompatibility and biodegradable characteristics and their ability to be quickly produced and functionalize with strong mechanical resistance. This article is intended to perform microbial fermentation using Pseudomonas putida strain to show the amount of biopolymers of the type polyhydroxyalkanoates with medium-chain-length (mcl-PHA) obtained depending on the type and quantity of added precursors (glucose and fatty acids). METHODS It is important to understand the microbial interaction and mechanism involved in PHA biosynthetis.For these, several methods were used, such as: obtaining microbial biomass by using a Pseudomonas putida strain able of PHA-producing, analysis of biopolymer production by acetone extraction following the Soxhlet method, purification of biopolymer by methanol-ethanol treatment, followed by the estimation of biomass by spectrophotometric analysis and the measurement of the dry weight of cells and the quantification of the amount of biopolymer produced following the gas chromatographic method (GC). RESULTS The highest PHA yield was obtained using octanoic (17 mL in 2000 mL medium) and hexanoic acids (14 mL in 2000 mL medium) as precursors. Consequently, octanoic acid - octanoic acid, heptanoic acid - nonanoic acid, and octanoic acid - hexanoic acid were the mix of precursors that supported the amount of PHA obtained. CONCLUSION Of the 4 types of structurally related substrate, the strain Pseudomonas putida ICCF 319 prefers the C8 sublayer for an elastomeric PHA's biosynthesis with a composition in which the C8 monomer predominates over C6 and C10.
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Affiliation(s)
- Nicoleta Ene
- Faculty of Biotechnologies, University of Agronomic Sciences and Veterinary Medicine, Mărăs,ti Blv. 59, 011464 Bucharest, Romania
| | - Mariana-Gratiela Vladu
- Faculty of Biotechnologies, University of Agronomic Sciences and Veterinary Medicine, Mărăs,ti Blv. 59, 011464 Bucharest, Romania
| | - Irina Lupescu
- National Institute for Chemical Pharmaceutical Research and Development-ICCF, Vitan Avenue 112, 031299 Bucharest, Romania
| | - Ana-Despina Ionescu
- National Institute for Chemical Pharmaceutical Research and Development-ICCF, Vitan Avenue 112, 031299 Bucharest, Romania
| | - Emanuel Vamanu
- Faculty of Biotechnologies, University of Agronomic Sciences and Veterinary Medicine, Mărăs,ti Blv. 59, 011464 Bucharest, Romania
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Wang C, Xie J, Xiao X, Chen S, Wang Y. Development of Nontoxic Biodegradable Polyurethanes Based on Polyhydroxyalkanoate and L-lysine Diisocyanate with Improved Mechanical Properties as New Elastomers Scaffolds. Polymers (Basel) 2019; 11:E1927. [PMID: 31766759 PMCID: PMC6960902 DOI: 10.3390/polym11121927] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 11/20/2019] [Accepted: 11/21/2019] [Indexed: 01/04/2023] Open
Abstract
A nontoxic and biodegradable polyurethane was prepared, characterized, and evaluated for biomedical applications. Stretchable, biodegradable, and biocompatible polyurethanes (LPH) based on L-lysine diisocyanate (LDI) with poly(ethylene glycol) (PEG) and polyhydroxyalkanoates(PHA) of different molar ratios were synthesized. The chemical and physical characteristics of the LPH films are tunable, enabling the design of mechanically performance, hydrophilic, and biodegradable behavior. The LPH films have a Young's modulus, tensile strength, and elongation at break in the range of 3.07-25.61 MPa, 1.01-9.49 MPa, and 102-998%, respectively. The LPH films demonstrate different responses to a change of temperature from 4 to 37 °C, with the swelling ratio for the same sample at equilibrium varying from 184% to 151%. In vitro degradation tests show the same LPH film has completely different degradation morphologies in pH of 3, 7.4, and 11 phosphate buffered solution (PBS). In vitro cell tests show feasibility that some of the LPH films are suitable for culturing rat bone marrow stem cells (rBMSCs), for future soft-tissue regeneration. The results demonstrate the feasibility of the LPH scaffolds for many biomedical applications.
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Affiliation(s)
- Cai Wang
- Guangdong Research Center for Interfacial Engineering of Functional Materials, Shenzhen Key Laboratory of Polymer Science and Technology, Shenzhen Key Laboratory of Special Functional Materials, Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China; (C.W.); (J.X.); (X.X.)
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Jiapeng Xie
- Guangdong Research Center for Interfacial Engineering of Functional Materials, Shenzhen Key Laboratory of Polymer Science and Technology, Shenzhen Key Laboratory of Special Functional Materials, Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China; (C.W.); (J.X.); (X.X.)
| | - Xuan Xiao
- Guangdong Research Center for Interfacial Engineering of Functional Materials, Shenzhen Key Laboratory of Polymer Science and Technology, Shenzhen Key Laboratory of Special Functional Materials, Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China; (C.W.); (J.X.); (X.X.)
| | - Shaojun Chen
- Guangdong Research Center for Interfacial Engineering of Functional Materials, Shenzhen Key Laboratory of Polymer Science and Technology, Shenzhen Key Laboratory of Special Functional Materials, Nanshan District Key Lab for Biopolymers and Safety Evaluation, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China; (C.W.); (J.X.); (X.X.)
| | - Yiping Wang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
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Rebia RA, binti Sadon NS, Tanaka T. Natural Antibacterial Reagents ( Centella, Propolis, and Hinokitiol) Loaded into Poly[( R)-3-hydroxybutyrate- co-( R)-3-hydroxyhexanoate] Composite Nanofibers for Biomedical Applications. NANOMATERIALS 2019; 9:nano9121665. [PMID: 31766678 PMCID: PMC6956080 DOI: 10.3390/nano9121665] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Revised: 11/13/2019] [Accepted: 11/19/2019] [Indexed: 12/12/2022]
Abstract
Centella asiatica, propolis, and hinokitiol, as natural antibacterial reagents, were integrated into the poly[(R)-3-hydroxybutyrate-co-(R)-3-hydroxyhexanoate] (PHBH) polymer to produce antibacterial wound dressings, using electrospinning process. The results showed that the fiber diameters and surface morphology of PHBH composite nanofibers were influenced by the addition of ethanol–centella (EC), methanol–centella (MC), ethanol–propolis (EP), and ethanol–hinokitiol (EH) at various ratios compared to pristine PHBH nanofibers. From FT-IR, the nanofibrous samples with higher contents of natural antibacterial substances showed the peaks of carboxylic acid, aromatic ring, and tropolone carbon ring from centella, propolis, and hinokitiol, respectively. Furthermore, the tensile strength of neat PHBH nanofibers was increased from 8.00 ± 0.71 MPa up to 16.35 ± 1.78 MPa by loading of propolis (EP) 7% into PHBH. X-ray analysis explained that the loading of propolis (EP) was also able to increase the crystallinity in PHBH composite nanofibers from 47.0% to 54.5%. The antibacterial results demonstrated that PHBH composite nanofibers containing natural antibacterial products were potent inhibitors against the growth of Escherichia coli and Staphylococcus aureus, amongst them hinokitiol and propolis proved to be the most effective. Additionally, the release studies displayed that centella and hinokitiol had faster release from PHBH composite nanofibers in comparison to propolis.
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Affiliation(s)
- Rina Afiani Rebia
- Interdisciplinary Graduate School of Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan;
| | - Nurul Shaheera binti Sadon
- Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
| | - Toshihisa Tanaka
- Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
- Correspondence: ; Tel.: +81-268-21-5531
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Singh AK, Srivastava JK, Chandel AK, Sharma L, Mallick N, Singh SP. Biomedical applications of microbially engineered polyhydroxyalkanoates: an insight into recent advances, bottlenecks, and solutions. Appl Microbiol Biotechnol 2019; 103:2007-2032. [DOI: 10.1007/s00253-018-09604-y] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 12/28/2018] [Accepted: 12/28/2018] [Indexed: 01/10/2023]
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Rebia RA, Rozet S, Tamada Y, Tanaka T. Biodegradable PHBH/PVA blend nanofibers: Fabrication, characterization, in vitro degradation, and in vitro biocompatibility. Polym Degrad Stab 2018. [DOI: 10.1016/j.polymdegradstab.2018.05.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Chang HM, Wang ZH, Luo HN, Xu M, Ren XY, Zheng GX, Wu BJ, Zhang XH, Lu XY, Chen F, Jing XH, Wang L. Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate)-based scaffolds for tissue engineering. ACTA ACUST UNITED AC 2014; 47:533-9. [PMID: 25003631 PMCID: PMC4123831 DOI: 10.1590/1414-431x20143930] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 03/12/2014] [Indexed: 01/18/2023]
Abstract
Development and selection of an ideal scaffold is of importance for tissue engineering. Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) is a biocompatible bioresorbable copolymer that belongs to the polyhydroxyalkanoate family. Because of its good biocompatibility, PHBHHx has been widely used as a cell scaffold for tissue engineering. This review focuses on the utilization of PHBHHx-based scaffolds in tissue engineering. Advances in the preparation, modification, and application of PHBHHx scaffolds are discussed.
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Affiliation(s)
- H M Chang
- Department of Otolaryngology-Head and Neck Surgery, Affiliated Hospital of Xi'an Medical University, Xi'an, China
| | - Z H Wang
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital, Xi'an Jiaotong University, Xi'an, China
| | - H N Luo
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital, Xi'an Jiaotong University, Xi'an, China
| | - M Xu
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital, Xi'an Jiaotong University, Xi'an, China
| | - X Y Ren
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital, Xi'an Jiaotong University, Xi'an, China
| | - G X Zheng
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital, Xi'an Jiaotong University, Xi'an, China
| | - B J Wu
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital, Xi'an Jiaotong University, Xi'an, China
| | - X H Zhang
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital, Xi'an Jiaotong University, Xi'an, China
| | - X Y Lu
- School of Life Science and Technology of Xi'an Jiaotong University, Xi'an, China
| | - F Chen
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital, Xi'an Jiaotong University, Xi'an, China
| | - X H Jing
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital, Xi'an Jiaotong University, Xi'an, China
| | - L Wang
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital, Xi'an Jiaotong University, Xi'an, China
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