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van Wijngaarden EW, Goetsch AG, Brito IL, Hershey DM, Silberstein MN. Engineering Bacterial Biomanufacturing: Characterization and Manipulation of Sphingomonas sp. LM7 Extracellular Polymers. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.16.594401. [PMID: 38798469 PMCID: PMC11118415 DOI: 10.1101/2024.05.16.594401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Biologically produced materials are an attractive alternative to traditional materials such as metals and plastics and offer improved functionalities such as better biodegradability and biocompatibility. Polysaccharides are an example of a biologically produced materials that can have a range of chemical and physical properties including high stiffness to weight ratios and thermal stability. Biomanufactured bacterial polysaccharides can come with many advantages such as being non-toxic and are mechanically robust relative to proteins and lipids, which are also secreted by bacteria to generate a biofilm. One major goal in biomanufacturing is to produce quality material quickly and cost-effectively. Biomanufacturing offers additional benefits compared to traditional manufacturing including low resource investment and equipment requirements, providing an alternative to sourcing fossil fuel byproducts, and relatively low temperatures needed for production. However, many biologically produced materials require complex and lengthy purification processes before use. This paper 1) identifies the material properties of a novel polysaccharide, dubbed promonan, isolated from the extracellular polymeric substances of Sphingomonas sp. LM7; 2) demonstrates that these properties can be manipulated to suit specific applications; and 3) presents two alternative methods of processing to shorten purification time by more than 50% while maintaining comparable material.
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Oliveira RWG, de Oliveira JM, da Paz FB, Muniz EC, de Moura EM, Costa JCS, do Nascimento MO, Carvalho ALM, Pinheiro IM, Mendes AN, Filgueiras LA, de Souza PR, de Moura CVR. Films composed of white angico gum and chitosan containing chlorhexidine as an antimicrobial agent. Int J Biol Macromol 2023; 235:123905. [PMID: 36870650 DOI: 10.1016/j.ijbiomac.2023.123905] [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: 07/29/2022] [Revised: 02/12/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023]
Abstract
Anadenanthera colubrina, popularly known as white angico, is a species extensively cultivated in Brazil, mainly in the cerrado region, including the state of Piauí. This study examines the development of films composed of white angico gum (WAG) and chitosan (CHI) and containing chlorhexidine (CHX), an antimicrobial agent. The solvent casting method was used to prepare films. Different combinations and concentrations of WAG and CHI were used to obtain films with good physicochemical characteristics. Properties such as the in vitro swelling ratio, the disintegration time, folding endurance, and the drug content were determined. The selected formulations were characterised by scanning electron microscopy, Fourier-transform infrared spectroscopy, differential scanning calorimetry, thermogravimetric analysis, and X-ray diffraction, and the CHX release time and antimicrobial activity were evaluated. CHX showed a homogenous distribution in all CHI/WAG film formulations. The optimised films showed good physicochemical properties with 80% CHX release over 26 h, which is considered promising for local treatment of severe lesions in the mouth. Cytotoxicity tests of the films did not show toxicity. The antimicrobial and antifungal effects were very effective against the tested microorganisms.
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Affiliation(s)
| | | | | | - Edvani Curti Muniz
- Department of Chemistry, Federal University of Piauí, 64049-550, Brazil.
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Noreen S, Hasan S, Ghumman SA, Bukhari SNA, Ijaz B, Hameed H, Iqbal H, Aslam A, Elsherif MAM, Noureen S, Ejaz H. pH Responsive Abelmoschus esculentus Mucilage and Administration of Methotrexate: In-Vitro Antitumor and In-Vivo Toxicity Evaluation. Int J Mol Sci 2022; 23:ijms23052725. [PMID: 35269867 PMCID: PMC8910941 DOI: 10.3390/ijms23052725] [Citation(s) in RCA: 2] [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: 12/31/2021] [Revised: 02/21/2022] [Accepted: 02/21/2022] [Indexed: 02/04/2023] Open
Abstract
The rapid progression in biomaterial nanotechnology apprehends the potential of non-toxic and potent polysaccharide delivery modules to overcome oral chemotherapeutic challenges. The present study is aimed to design, fabricate and characterize polysaccharide nanoparticles for methotrexate (MTX) delivery. The nanoparticles (NPs) were prepared by Abelmoschus esculentus mucilage (AEM) and chitosan (CS) by the modified coacervation method, followed by ultra-sonification. The NPs showed much better pharmaceutical properties with a spherical shape and smooth surface of 213.4–254.2 nm with PDI ranging between 0.279–0.485 size with entrapment efficiency varying from 42.08 ± 1.2 to 72.23 ± 2.0. The results revealed NPs to possess positive zeta potential and a low polydispersity index (PDI). The in-vitro drug release showed a sustained release of the drug up to 32 h with pH-dependence. Blank AEM -CS NPs showed no in-vivo toxicity for a time duration of 14 days, accompanied by high cytotoxic effects of optimized MTX loaded NPs against MCF-7 and MD-MBA231 cells by MTT assay. In conclusion, the findings advocated the therapeutic potential of AEM/CS NPs as an efficacious tool, offering a new perspective for pH-responsive routing of anticancer drugs with tumor cells as a target.
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Affiliation(s)
- Sobia Noreen
- Institute of Chemistry, University of Sargodha, Sargodha 40100, Pakistan; (S.H.); (H.I.); (S.N.)
- Correspondence: (S.N.); (S.N.A.B.); Tel.: +966-5657-38896 (S.N.A.B.)
| | - Sara Hasan
- Institute of Chemistry, University of Sargodha, Sargodha 40100, Pakistan; (S.H.); (H.I.); (S.N.)
- Department of Chemistry, Sargodha Campus, The University of Lahore, Sargodha 40100, Pakistan
| | - Shazia Akram Ghumman
- College of Pharmacy, University of Sargodha, Sargodha 40100, Pakistan; (S.A.G.); (A.A.)
| | - Syed Nasir Abbas Bukhari
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jouf University, Sakaka 72388, Saudi Arabia
- Correspondence: (S.N.); (S.N.A.B.); Tel.: +966-5657-38896 (S.N.A.B.)
| | - Bushra Ijaz
- Centre of Excellence in Molecular Biology, University of the Punjab, Lahore 54000, Pakistan;
| | - Huma Hameed
- IRSET, EHSEP, INSERM, University of Rennes 1, 35000 Rennes, France;
| | - Huma Iqbal
- Institute of Chemistry, University of Sargodha, Sargodha 40100, Pakistan; (S.H.); (H.I.); (S.N.)
| | - Afeefa Aslam
- College of Pharmacy, University of Sargodha, Sargodha 40100, Pakistan; (S.A.G.); (A.A.)
| | | | - Shazia Noureen
- Institute of Chemistry, University of Sargodha, Sargodha 40100, Pakistan; (S.H.); (H.I.); (S.N.)
| | - Hasan Ejaz
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka 72388, Saudi Arabia;
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Demir D, Uğurlu MA, Ceylan S, Sakım B, Genç R, Bölgen N. Assessment of Chitosan‐Gum Tragacanth Cryogels For Tissue Engineering Applications. POLYM INT 2022. [DOI: 10.1002/pi.6372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Didem Demir
- Mersin University, Engineering Faculty, Chemical Engineering Department Mersin Turkey
| | - Müge Aşık Uğurlu
- Mersin University, Engineering Faculty, Chemical Engineering Department Mersin Turkey
| | - Seda Ceylan
- Adana Alparslan Türkeş Science and Technology University, Engineering Faculty, Bioengineering Department Adana Turkey
| | - Burcu Sakım
- Mersin University, Engineering Faculty, Chemical Engineering Department Mersin Turkey
| | - Rükan Genç
- Mersin University, Engineering Faculty, Chemical Engineering Department Mersin Turkey
| | - Nimet Bölgen
- Mersin University, Engineering Faculty, Chemical Engineering Department Mersin Turkey
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A Review of Gum Hydrocolloid Polyelectrolyte Complexes (PEC) for Biomedical Applications: Their Properties and Drug Delivery Studies. Processes (Basel) 2021. [DOI: 10.3390/pr9101796] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The utilization of natural gum polysaccharides as the vehicle for drug delivery systems and other biomedical applications has increased in recent decades. Their biocompatibility, biodegradability, and price are much cheaper than other materials. It is also renewable and available in massive amounts, which are the main reasons for its use in pharmaceutical applications. Gum can be easily functionalized with other natural polymers to enhance their applications. Various aspects of the utilization of natural gums in the forms of polyelectrolyte complexes (PECs) for drug delivery systems are discussed in this review. The application of different mathematical models were used to represent the drug release mechanisms from PECs; these models include a zero-order equation, first-order equation, Higuchi, simplified Higuchi, Korsmeyer–Peppas, and Peppas–Sahlin.
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Shoaib MH, Sikandar M, Ahmed FR, Ali FR, Qazi F, Yousuf RI, Irshad A, Jabeen S, Ahmed K. Applications of Polysaccharides in Controlled Release Drug Delivery System. POLYSACCHARIDES 2021. [DOI: 10.1002/9781119711414.ch29] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Eco-Friendly and Economic, Adsorptive Removal of Cationic and Anionic Dyes by Bio-Based Karaya Gum-Chitosan Sponge. Polymers (Basel) 2021; 13:polym13020251. [PMID: 33451026 PMCID: PMC7828559 DOI: 10.3390/polym13020251] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 01/07/2021] [Accepted: 01/10/2021] [Indexed: 12/15/2022] Open
Abstract
A novel, lightweight (8 mg/cm3), conjugate sponge of karaya gum (Kg) and chitosan (Ch) has been synthesized with very high porosity (~98%) and chemical stability, as a pH-responsive adsorbent material for the removal of anionic and cationic dyes from aqueous solutions. Experimental results showed that Kg-Ch conjugate sponge has good adsorption capacity for anionic dye methyl orange (MO: 32.81 mg/g) and cationic dye methylene blue (MB: 32.62 mg/g). The optimized Kg:Ch composition grants access to the free and pH-dependent ionizable functional groups on the surface of the sponge for the adsorption of dyes. The studies on the adsorption process as a function of pH, adsorbate concentration, adsorbent dose, and contact time indicated that the adsorption capacity of MB was decreased with increasing pH from 5 to 10 and external mass transfer together with intra-particle diffusion. The adsorption isotherm of the anionic dye MO was found to correlate with the Langmuir model (R2 = 0.99) while the adsorption of the cationic MB onto the sponge was better described by the Freundlich model (R2 = 0.99). Kinetic regression results specified that the adsorption kinetics were well represented by the pseudo-second-order model. The H-bonding, as well as electrostatic interaction between the polymers and the adsorption interactions of dyes onto Kg-Ch sponge from aqueous solutions, were investigated using attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopy, and the highly wrinkled porous morphology was visualized in depth by field-emission scanning electron microscopy (FE-SEM) analysis. Moreover, the samples could be reused without loss of contaminant removal capacity over six successive adsorption-desorption cycles. The hierarchical three-dimensional sponge-like structure of Kg has not been reported yet and this novel Kg-Ch sponge functions as a promising candidate for the uninterrupted application of organic pollutant removal from water.
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Brar V, Kaur G. Thiolated okra chitosan nanoparticles: preparation and optimisation as intranasal drug delivery agents. J Microencapsul 2020; 37:624-639. [PMID: 33092412 DOI: 10.1080/02652048.2020.1836057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AIM The preparation of thiolated okra gum by use of full factorial design to optimise the reaction conditions. METHODS Thiolated gum was obtained by esterification optimised by full factorial design. The effect of varying the thiolated Okra concentration, chitosan concentration, pH, and stirring speed on particle size, entrapment efficiency and zeta potential was observed using Box-Behnken design. RESULTS Maximum yield and degree of substitution were obtained at reaction time of 152 min, 6.73 ml of thioglycolic acid and 70 °C of temperature. The optimised calculated parameters were thiolated okra concentrations of (0.07% w/v), chitosan concentration (0.05% w/v), pH (3), stirring speed (4430 rpm), which yielded nanoparticles of size 294.3 ± 0.3 nm, 43.57 ± 1.21% entrapment and 23.29 ± 2.3 mV of Zeta potential. CONCLUSION NPs were observed to be promising for brain targeting.
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Affiliation(s)
- Vivekjot Brar
- Chandigarh College of Pharmacy, Chandigarh Group of Colleges, Landran, India
| | - Gurpreet Kaur
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, India
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Liang T, Wang L. Preparation, Characterization and Application of a Low Water-Sensitive Artemisia sphaerocephala Krasch. Gum Intelligent Film Incorporated with Anionic Cellulose Nanofiber as a Reinforcing Component. Polymers (Basel) 2020; 12:polym12010247. [PMID: 31968624 PMCID: PMC7023553 DOI: 10.3390/polym12010247] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 01/06/2020] [Accepted: 01/17/2020] [Indexed: 12/18/2022] Open
Abstract
A low-water-sensitive Artemisia sphaerocephala Krasch. gum (ASKG) based intelligent film was developed. Red cabbage extracts (RCE) was selected as a natural pH-sensitive indicator, and anionic cellulose nanofiber (ACNF) was added as a hydrophobic and locking host. The zeta potential, rheology, Fourier-transform infrared spectroscopy, X-ray diffractometry, and release results indicated that the RCE was locked by the ACNF via electrostatic interactions, moreover, broke the original complicated network and ordered arrangement of polymer molecules in the developed intelligent films. RCE addition decreased the tensile strength, oxygen, and water vapor barrier properties and light transmission of the developed intelligent films, while increasing the elongation at break. The films could respond to buffer solutions and NH3 through different color changes. The developed intelligent film was hydrophobic, which could precisely detect the freshwater shrimp freshness in real time via color changes, which indicated that the films have potential in intelligent packaging and gas-sensing label fields.
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Tamburaci S, Kimna C, Tihminlioglu F. Bioactive diatomite and POSS silica cage reinforced chitosan/Na-carboxymethyl cellulose polyelectrolyte scaffolds for hard tissue regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 100:196-208. [PMID: 30948053 DOI: 10.1016/j.msec.2019.02.104] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 02/27/2019] [Accepted: 02/27/2019] [Indexed: 02/07/2023]
Abstract
Recently, natural polymers are reinforced with silica particles for hard tissue engineering applications to induce bone regeneration. In this study, as two novel bioactive agents, effects of diatomite and polyhedral oligomeric silsesquioxanes (POSS) on chitosan (CS)/Na-carboxymethylcellulose (Na-CMC) polymer blend scaffolds are examined. In addition, the effect of silica reinforcements was compared with Si-substituted nano-hydroxyapatite (Si-Hap) particles. The morphology, physical and chemical structures of the scaffolds were characterized with SEM, liquid displacement, FT-IR, mechanical analysis, swelling and degradation studies. The particle size and the crystal structure of diatomite, POSS and Si-Hap particles were determined with DLS and XRD analyses. In vitro studies were performed to figure out the cytotoxicity, proliferation, ALP activity, osteocalcin production and biomineralization to demonstrate the promising use of natural silica particles in bone regeneration. Freeze-dried scaffolds showed 190-307 μm pore size range and 61-70% porosity. Both inorganic reinforcements increased the mechanical strength, enhanced the water uptake capacity and fastened the degradation rate. The nanocomposite scaffolds did not show any cytotoxic effect and enhanced the surface mineralization in osteogenic medium. Thus, diatomite and POSS cage structures can be potential reinforcements for nanocomposite design in hard tissue engineering applications.
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Affiliation(s)
- Sedef Tamburaci
- İzmir Institute of Technology, Graduate Program of Biotechnology and Bioengineering, Gülbahçe Campus, Urla 35430, İzmir, Turkey; İzmir Institute of Technology, Department of Chemical Engineering, Gülbahçe Campus, Urla 35430, İzmir, Turkey
| | - Ceren Kimna
- İzmir Institute of Technology, Department of Chemical Engineering, Gülbahçe Campus, Urla 35430, İzmir, Turkey
| | - Funda Tihminlioglu
- İzmir Institute of Technology, Department of Chemical Engineering, Gülbahçe Campus, Urla 35430, İzmir, Turkey.
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