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Asokan V, Yelleti G, Bhat C, Bajaj M, Banerjee P. A novel peptide isolated from Catla skin collagen acts as a self-assembling scaffold promoting nucleation of calcium-deficient hydroxyapatite nanocrystals. J Biochem 2023; 173:197-224. [PMID: 36494197 DOI: 10.1093/jb/mvac103] [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: 05/28/2022] [Revised: 11/23/2022] [Accepted: 12/05/2022] [Indexed: 12/14/2022] Open
Abstract
Catla collagen hydrolysate (CH) was fractionated by chromatography and each fraction was subjected to HA nucleation, with the resultant HA-fraction composites being scored based on the structural and functional group of the HA formed. The process was repeated till a single peptide with augmented HA nucleation capacity was obtained. The peptide (4.6 kDa), exhibited high solubility, existed in polyproline-II conformation and displayed a dynamic yet stable hierarchical self-assembling property. The 3D modelling of the peptide revealed multiple calcium and phosphate binding sites and a high propensity to self-assemble. Structural analysis of the peptide-HA crystals revealed characteristic diffraction planes of HA with mineralization following the (002) plane, retention of the self-assembled hierarchy of the peptide and intense ionic interactions between carboxyl groups and calcium. The peptide-HA composite crystals were mostly of 25-40 nm dimensions and displayed 79% mineralization, 92% crystallinity, 39.25% porosity, 12GPa Young's modulus and enhanced stability in physiological pH. Cells grown on peptide-HA depicted faster proliferation rates and higher levels of osteogenic markers. It was concluded that the prerequisite for HA nucleation by a peptide included: a conserved sequence with a unique charge topology allowing calcium chelation and its ability to form a dynamic self-assembled hierarchy for crystal propagation.
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Affiliation(s)
- Vishwadeep Asokan
- Department of Biochemistry, School of Basic and Applied Sciences, Dayananda Sagar University, Bangalore, Karnataka 560078, India
| | - Geethika Yelleti
- Department of Biochemistry, School of Basic and Applied Sciences, Dayananda Sagar University, Bangalore, Karnataka 560078, India
| | - Chetna Bhat
- Department of Biochemistry, School of Basic and Applied Sciences, Dayananda Sagar University, Bangalore, Karnataka 560078, India
| | - Mayur Bajaj
- School of Biological Sciences, Indian Institute of Science Education and Research, Tirupati, Andhra Pradesh 517507, India
| | - Pradipta Banerjee
- Department of Biochemistry, School of Basic and Applied Sciences, Dayananda Sagar University, Bangalore, Karnataka 560078, India
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Hermida-Merino C, Cabaleiro D, Lugo L, Valcarcel J, Vázquez JA, Bravo I, Longo A, Salloum-Abou-Jaoude G, Solano E, Gracia-Fernández C, Piñeiro MM, Hermida-Merino D. Characterization of Tuna Gelatin-Based Hydrogels as a Matrix for Drug Delivery. Gels 2022; 8:gels8040237. [PMID: 35448138 PMCID: PMC9026235 DOI: 10.3390/gels8040237] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/23/2022] [Accepted: 04/01/2022] [Indexed: 12/27/2022] Open
Abstract
The skin of yellowfin tuna is one of the fishery industry solid residues with the greatest potential to add extra value to its circular economy that remains yet unexploited. Particularly, the high collagen content of fish skin allows generating gelatin by hydrolysis, which is ideal for forming hydrogels due to its biocompatibility and gelling capability. Hydrogels have been used as drug carriers for local administration due to their mechanical properties and drug loading capacity. Herein, novel tuna gelatin hydrogels were designed as drug vehicles with two structurally different antitumoral model compounds such as Doxorubicin and Crocin to be administrated locally in tissues with complex human anatomies after surgical resection. The characterization by gel permeation chromatography (GPC) of purified gelatin confirmed their heterogeneity composition, exhibiting three major bands that correspond to the β and α chains along with high molecular weight species. In addition, the Fourier Transform Infrared (FT-IR) spectra of gelatin probed the secondary structure of the gelatin showing the simultaneous existence of α helix, β sheet, and random coil structures. Morphological studies at different length scales were performed by a multi-technique approach using SAXS/WAXS, AFM and cryo-SEM that revealed the porous network formed by the interaction of gelatin planar aggregates. In addition, the sol-gel transition, as well as the gelation point and the hydrogel strength, were studied using dynamic rheology and differential scanning calorimetry. Likewise, the loading and release profiles followed by UV-visible spectroscopy indicated that the novel gelatin hydrogels improve the drug release of Doxorubicin and Crocin in a sustained fashion, indicating the structure-function importance in the material composition.
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Affiliation(s)
- Carolina Hermida-Merino
- Departamento de Física Aplicada, CINBIO, Universidade de Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain; (D.C.); (L.L.); (M.M.P.)
- Correspondence: (C.H.-M.); (D.H.-M.)
| | - David Cabaleiro
- Departamento de Física Aplicada, CINBIO, Universidade de Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain; (D.C.); (L.L.); (M.M.P.)
| | - Luis Lugo
- Departamento de Física Aplicada, CINBIO, Universidade de Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain; (D.C.); (L.L.); (M.M.P.)
| | - Jesus Valcarcel
- Grupo de Reciclado y Valorización de Materiales Residuales (REVAL), Instituto de Investigaciones Marinas (IIM-CSIC), Eduardo Cabello 6, 36208 Vigo, Spain; (J.V.); (J.A.V.)
| | - Jose Antonio Vázquez
- Grupo de Reciclado y Valorización de Materiales Residuales (REVAL), Instituto de Investigaciones Marinas (IIM-CSIC), Eduardo Cabello 6, 36208 Vigo, Spain; (J.V.); (J.A.V.)
| | - Ivan Bravo
- Departamento de Química Física, Facultad de Farmacia, UCLM, 02071 Albacete, Spain;
| | - Alessandro Longo
- ID20, European Synchrotron Radiation Facility (ESRF), 71 Avenue des Martyrs, 38000 Grenoble, France;
- Istituto per lo Studio dei Materiali Nanostrutturati (ISMN)-CNR, UOS Palermo, Via Ugo La Malfa, 153, 90146 Palermo, Italy
| | - Georges Salloum-Abou-Jaoude
- Constellium C-TEC Technology Center, Parc Economique Centr’alp, 725 rue Aristide Bergès, 38341 Voreppe, France;
| | - Eduardo Solano
- ALBA Synchrotron Light Source, NCD-SWEET Beamline, 08290 Cerdanyola del Valles, Spain;
| | | | - Manuel M. Piñeiro
- Departamento de Física Aplicada, CINBIO, Universidade de Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain; (D.C.); (L.L.); (M.M.P.)
| | - Daniel Hermida-Merino
- Departamento de Física Aplicada, CINBIO, Universidade de Vigo, Campus Lagoas-Marcosende, 36310 Vigo, Spain; (D.C.); (L.L.); (M.M.P.)
- Netherlands Organisation for Scientific Research (NWO), c/o ESRF BP 220, DUBBLE CRG/ESRF, CEDEX, 38043 Grenoble, France
- Correspondence: (C.H.-M.); (D.H.-M.)
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