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Schröder V, Gherghel D, Apetroaei MR, Gîjiu CL, Isopescu R, Dinculescu D, Apetroaei MM, Enache LE, Mihai CT, Rău I, Vochița G. α-Chitosan and β-Oligochitosan Mixtures-Based Formula for In Vitro Assessment of Melanocyte Cells Response. Int J Mol Sci 2024; 25:6768. [PMID: 38928474 PMCID: PMC11204147 DOI: 10.3390/ijms25126768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 06/14/2024] [Accepted: 06/17/2024] [Indexed: 06/28/2024] Open
Abstract
Chitosan is a natural polymer with numerous biomedical applications. The cellular activity of chitosan has been studied in various types of cancer, including melanoma, and indicates that these molecules can open new perspectives on antiproliferative action and anticancer therapy. This study analyzes how different chitosan conformations, such as α-chitosan (CH) or β-oligochitosan (CO), with various degrees of deacetylation (DDA) and molar mass (MM), both in different concentrations and in CH-CO mixtures, influence the cellular processes of SK-MEL-28 melanocytes, to estimate the reactivity of these cells to the applied treatments. The in vitro evaluation was carried out, aiming at the cellular metabolism (MTT assay), cellular morphology, and chitinase-like glycoprotein YKL-40 expression. The in vitro effect of the CH-CO mixture application on melanocytes is obvious at low concentrations of α-chitosan/β-oligochitosan (1:2 ratio), with the cell's response supporting the hypothesis that β-oligo-chitosan amplifies the effect. This oligochitosan mixture, favored by the β conformation and its small size, penetrates faster into the cells, being more reactive when interacting with some cellular components. Morphological effects expressed by the loss of cell adhesion and the depletion of YKL-40 synthesis are significant responses of melanocytes. β-oligochitosan (1.5 kDa) induces an extension of cytophysiological effects and limits the cell viability compared to α-chitosan (400-900 kDa). Statistical analysis using multivariate techniques showed differences between the CH samples and CH-CO mixtures.
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Affiliation(s)
- Verginica Schröder
- Departament of Cellular and Molecular Biology, Faculty of Pharmacy, Ovidius University of Constanta, 6 Capt. Aviator Al. Șerbănescu Street, Campus C, 900470 Constanta, Romania;
| | - Daniela Gherghel
- Institute of Biological Research Iasi, Branch of NIRDBS—National Institute of Research and Development of Biological Sciences Bucharest, 47 Lascar Catargi, 700107 Iasi, Romania;
| | - Manuela Rossemary Apetroaei
- Department of Marine Electric and Electronic Engineering, Faculty of Marine Engineering, Mircea cel Batran Naval Academy, 1 Fulgerului Street, 900218 Constanta, Romania;
| | - Cristiana Luminița Gîjiu
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology POLITEHNICA Bucharest, 011061 Bucharest, Romania; (C.L.G.); (R.I.); (L.E.E.); (I.R.)
| | - Raluca Isopescu
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology POLITEHNICA Bucharest, 011061 Bucharest, Romania; (C.L.G.); (R.I.); (L.E.E.); (I.R.)
| | - Daniel Dinculescu
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology POLITEHNICA Bucharest, 011061 Bucharest, Romania; (C.L.G.); (R.I.); (L.E.E.); (I.R.)
| | - Miruna-Maria Apetroaei
- Faculty of Pharmacy, Carol Davila University of Medicine and Pharmacy, 6 Traian Vuia Street, 020956 Bucharest, Romania;
| | - Laura Elena Enache
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology POLITEHNICA Bucharest, 011061 Bucharest, Romania; (C.L.G.); (R.I.); (L.E.E.); (I.R.)
| | | | - Ileana Rău
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology POLITEHNICA Bucharest, 011061 Bucharest, Romania; (C.L.G.); (R.I.); (L.E.E.); (I.R.)
| | - Gabriela Vochița
- Institute of Biological Research Iasi, Branch of NIRDBS—National Institute of Research and Development of Biological Sciences Bucharest, 47 Lascar Catargi, 700107 Iasi, Romania;
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Dinculescu D, Gîjiu CL, Apetroaei MR, Isopescu R, Rău I, Schröder V. Optimization of Chitosan Extraction Process from Rapana venosa Egg Capsules Waste Using Experimental Design. MATERIALS (BASEL, SWITZERLAND) 2023; 16:525. [PMID: 36676262 PMCID: PMC9862177 DOI: 10.3390/ma16020525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 12/23/2022] [Accepted: 01/01/2023] [Indexed: 06/17/2023]
Abstract
New green and sustainable sources were chosen to obtain chitosan, an important material, with many applications in different fields. The present study is focused on egg capsules of Rapana venosa waste as raw material for chitosan oligomers. As previous studies revealed that chitosan extraction from this material takes place with a low yield, the present research aimed to optimize this step. A 22 experimental plan, with three replicates in the center, was proposed to investigate the influence of NaOH concentration and temperature on the yield extraction. After a primary analysis of the experimental data, a favorable temperature value was selected (90 °C) at which the total dissolution of the egg capsules was obtained. Then, at this temperature, the experimental plan was extended exploring the influence of the NaOH concentration on three levels (5, 6, and 7%) and the extraction duration on two levels (60 and 85 min). Based on all experimental data, a neural model was obtained and validated. The neural model was used to maximize the yield, applying Genetic Algorithm (GA) implemented in Matlab®. The resulting optimal solution is: NaOH concentration 6.47%, temperature 90 °C, duration 120 min, with a yield value of 7.05%.
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Affiliation(s)
- Daniel Dinculescu
- Faculty of Chemical Engineering and Biotechnologies, University POLITEHNICA of Bucharest, 011061 Bucharest, Romania
| | - Cristiana Luminița Gîjiu
- Faculty of Chemical Engineering and Biotechnologies, University POLITEHNICA of Bucharest, 011061 Bucharest, Romania
| | | | - Raluca Isopescu
- Faculty of Chemical Engineering and Biotechnologies, University POLITEHNICA of Bucharest, 011061 Bucharest, Romania
| | - Ileana Rău
- Faculty of Chemical Engineering and Biotechnologies, University POLITEHNICA of Bucharest, 011061 Bucharest, Romania
| | - Verginica Schröder
- Faculty of Pharmacy, Ovidius University of Constanta, 900527 Constanta, Romania
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