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Modification, 3D printing process and application of sodium alginate based hydrogels in soft tissue engineering: A review. Int J Biol Macromol 2023; 232:123450. [PMID: 36709808 DOI: 10.1016/j.ijbiomac.2023.123450] [Citation(s) in RCA: 38] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 12/26/2022] [Accepted: 01/24/2023] [Indexed: 01/27/2023]
Abstract
Sodium alginate (SA) is an inexpensive and biocompatible biomaterial with fast and gentle crosslinking that has been widely used in biological soft tissue repair/regeneration. Especially with the advent of 3D bioprinting technology, SA hydrogels have been applied more deeply in tissue engineering due to their excellent printability. Currently, the research on material modification, molding process and application of SA-based composite hydrogels has become a hot topic in tissue engineering, and a lot of fruitful results have been achieved. To better help readers have a comprehensive understanding of the development status of SA based hydrogels and their molding process in tissue engineering, in this review, we summarized SA modification methods, and provided a comparative analysis of the characteristics of various SA based hydrogels. Secondly, various molding methods of SA based hydrogels were introduced, the processing characteristics and the applications of different molding methods were analyzed and compared. Finally, the applications of SA based hydrogels in tissue engineering were reviewed, the challenges in their applications were also analyzed, and the future research directions were prospected. We believe this review is of great helpful for the researchers working in biomedical and tissue engineering.
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Injectable PTHF-based thermogelling polyurethane implants for long-term intraocular application. Biomater Res 2022; 26:70. [PMID: 36461130 PMCID: PMC9716749 DOI: 10.1186/s40824-022-00316-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 11/06/2022] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND Hydrogels show great potential to be used for intraocular applications due to their high-water content and similarity to the native vitreous. Injectable thermosensitive hydrogels through a small-bore needle can be used as a delivery system for drugs or a tamponading substitute to treat posterior eye diseases with clear clinical potential. However, none of the currently available thermosensitive hydrogels can provide intraocular support for up to 3 months or more. METHOD In this study, an injectable polytetrahydrofuran (PTHF)-based thermosensitive hydrogel was synthesized by polyurethane reaction. We examined the injectability, rheological properties, microstructure, cytotoxicity, and in vivo compatibility and stability of the hydrogels in rabbit eyes. RESULTS We found that the PTHF block type and PTHF component ratio could modulate thermogelation properties of the polyurethane polymers. The PTHF-based hydrogel implants retained normal retinal structure and function. Incorporating bioinert PTHF generated highly biocompatible and more stable thermogels in the vitreous cavity, with gel networks and the presence of polymer still observed after 3 months when other thermogels would have been completely cleared. Moreover, despite lacking hydrolytically cleavable linkages, the polymers could be most naturally removed from the native vitreous by bio-erosion without additional surgical interventions. CONCLUSION Our findings suggest the potential of incorporating hydrophobic bioinert blocks to enhance the in vivo stability of supramolecularly associated hydrogels for long-term intraocular applications.
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Volkov AV, Muraev AA, Zharkova II, Voinova VV, Akoulina EA, Zhuikov VA, Khaydapova DD, Chesnokova DV, Menshikh KA, Dudun AA, Makhina TK, Bonartseva GA, Asfarov TF, Stamboliev IA, Gazhva YV, Ryabova VM, Zlatev LH, Ivanov SY, Shaitan KV, Bonartsev AP. Poly(3-hydroxybutyrate)/hydroxyapatite/alginate scaffolds seeded with mesenchymal stem cells enhance the regeneration of critical-sized bone defect. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 114:110991. [PMID: 32994018 DOI: 10.1016/j.msec.2020.110991] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 04/08/2020] [Accepted: 04/18/2020] [Indexed: 01/13/2023]
Abstract
A critical-sized calvarial defect in rats is employed to reveal the osteoinductive properties of biomaterials. In this study, we investigate the osteogenic efficiency of hybrid scaffolds based on composites of a biodegradable and biocompatible polymer, poly(3-hydroxybutyrate) (PHB) with hydroxyapatite (HA) filled with alginate (ALG) hydrogel containing mesenchymal stem cells (MSCs) on the regeneration of the critical-sized radial defect of the parietal bone in rats. The scaffolds based on PHB and PHB/HA with desired shapes were prepared by two-stage salt leaching technique using a mold obtained by three-dimensional printing. To obtain PHB/HA/ALG/MSC scaffolds seeded with MSCs, the scaffolds were filled with ALG hydrogel containing MSCs; acellular PHB/ALG and PHB/ALG filled with empty ALG hydrogel were prepared for comparison. The produced scaffolds have high porosity and irregular interconnected pore structure. PHB/HA scaffolds supported MSC growth and induced cell osteogenic differentiation in a regular medium in vitro that was manifested by an increase in ALP activity and expression of the CD45 phenotype marker. The data of computed tomography and histological studies showed 94% and 92%, respectively, regeneration of critical-sized calvarial bone defect in vivo at 28th day after implantation of MSC-seeded PHB/HA/ALG/MSC scaffolds with 3.6 times higher formation of the main amount of bone tissue at 22-28 days in comparison with acellular PHB/HA/ALG scaffolds that was shown at the first time by fluorescent microscopy using the original technique of intraperitoneal administration of fluorescent dyes to living postoperative rats. The obtained in vivo results can be associated with the MSC-friendly microstructure and in vitro osteogenic properties of PHB/HA base-scaffolds. Thus, the obtained data demonstrate the potential of MSCs encapsulated in the bioactive biopolymer/mineral/hydrogel scaffold to improve the bone regeneration process in critical-sized bone defects.
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Affiliation(s)
- Alexey V Volkov
- The Peoples' Friendship University of Russia, Miklukho-Maklaya St. 6, 117198 Moscow, Russia; N.N. Priorov National Medical Research Center of Traumatology and Orthopedics of the Ministry of Health of the Russian Federation, Priorova Str. 10, 127299 Moscow, Russia
| | - Alexander A Muraev
- The Peoples' Friendship University of Russia, Miklukho-Maklaya St. 6, 117198 Moscow, Russia; I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya St. 8/2, 119991, Moscow, Russia
| | - Irina I Zharkova
- Faculty of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1, bld. 12, 119234 Moscow, Russia
| | - Vera V Voinova
- Faculty of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1, bld. 12, 119234 Moscow, Russia; A.N.Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Ave. 33, bld. 2, 119071 Moscow, Russia
| | - Elizaveta A Akoulina
- Faculty of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1, bld. 12, 119234 Moscow, Russia; A.N.Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Ave. 33, bld. 2, 119071 Moscow, Russia
| | - Vsevolod A Zhuikov
- A.N.Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Ave. 33, bld. 2, 119071 Moscow, Russia
| | - Dolgor D Khaydapova
- Faculty of Soil Science, M.V.Lomonosov Moscow State University, Leninskie gory, 1, bld. 12, 119234 Moscow, Russia
| | - Dariana V Chesnokova
- Faculty of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1, bld. 12, 119234 Moscow, Russia
| | - Ksenia A Menshikh
- Faculty of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1, bld. 12, 119234 Moscow, Russia
| | - Andrej A Dudun
- Faculty of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1, bld. 12, 119234 Moscow, Russia; A.N.Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Ave. 33, bld. 2, 119071 Moscow, Russia
| | - Tatiana K Makhina
- A.N.Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Ave. 33, bld. 2, 119071 Moscow, Russia
| | - Garina A Bonartseva
- A.N.Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Ave. 33, bld. 2, 119071 Moscow, Russia
| | - Teymur F Asfarov
- The Peoples' Friendship University of Russia, Miklukho-Maklaya St. 6, 117198 Moscow, Russia
| | - Ivan A Stamboliev
- The Peoples' Friendship University of Russia, Miklukho-Maklaya St. 6, 117198 Moscow, Russia
| | - Yulia V Gazhva
- Privolzhsky Research Medical University of the Ministry of Health of the Russian Federation, Minin and Pozharsky Sq. 10/1, 603005 Nizhny Novgorod, Russia
| | - Valentina M Ryabova
- Privolzhsky Research Medical University of the Ministry of Health of the Russian Federation, Minin and Pozharsky Sq. 10/1, 603005 Nizhny Novgorod, Russia
| | - Lubomir H Zlatev
- The Peoples' Friendship University of Russia, Miklukho-Maklaya St. 6, 117198 Moscow, Russia
| | - Sergey Y Ivanov
- The Peoples' Friendship University of Russia, Miklukho-Maklaya St. 6, 117198 Moscow, Russia; I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya St. 8/2, 119991, Moscow, Russia
| | - Konstantin V Shaitan
- Faculty of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1, bld. 12, 119234 Moscow, Russia
| | - Anton P Bonartsev
- Faculty of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1, bld. 12, 119234 Moscow, Russia; A.N.Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Ave. 33, bld. 2, 119071 Moscow, Russia.
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