Piezoelectric hybrid scaffolds mineralized with calcium carbonate for tissue engineering: Analysis of local enzyme and small-molecule drug delivery, cell response and antibacterial performance; Materials Science and Engineering: C; Vol. 122
| Parent link: | Materials Science and Engineering: C Vol. 122.— 2021.— [111909, 10 p.] |
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| निगमित लेखक: | |
| अन्य लेखक: | , , , , , , , |
| सारांश: | Title screen As the next generation of materials for bone reconstruction, we propose a multifunctional bioactive platform based on biodegradable piezoelectric polyhydroxybutyrate (PHB) fibrous scaffolds for tissue engineering with drug delivery capabilities. To use the entire surface area for local drug delivery, the scaffold surface was uniformly biomineralized with biocompatible calcium carbonate (CaCO3) microparticles in a vaterite–calcite polymorph mixture. CaCO3-coated PHB scaffolds demonstrated a similar elastic modulus compared to that of pristine one. However, reduced tensile strength and failure strain of 31% and 67% were observed, respectively. The biomimetic immobilization of enzyme alkaline phosphatase (ALP) and glycopeptide antibiotic vancomycin (VCM) preserved the CaCO3-mineralized PHB scaffold morphology and resulted in partial recrystallization of vaterite to calcite. In comparison to pristine scaffolds, the loading efficiency of CaCO3-mineralized PHB scaffolds was 4.6 and 3.5 times higher for VCM and ALP, respectively. Despite the increased number of cells incubated with ALP-immobilized scaffolds (up to 61% for non-mineralized and up to 36% for mineralized), the CaCO3-mineralized PHB scaffolds showed cell adhesion; those containing both VCM and ALP molecules had the highest cell density. Importantly, no toxicity for pre-osteoblastic cells was detected, even in the VCM-immobilized scaffolds. In contrast with antibiotic-free scaffolds, the VCM-immobilized ones had a pronounced antibacterial effect against gram-positive bacteria Staphylococcus aureus. Thus, piezoelectric hybrid PHB scaffolds modified with CaCO3 layers and immobilized VCM/ALP are promising materials in bone tissue engineering. Режим доступа: по договору с организацией-держателем ресурса |
| भाषा: | अंग्रेज़ी |
| प्रकाशित: |
2021
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| विषय: | |
| ऑनलाइन पहुंच: | https://doi.org/10.1016/j.msec.2021.111909 |
| स्वरूप: | इलेक्ट्रोनिक पुस्तक अध्याय |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664297 |
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| 200 | 1 | |a Piezoelectric hybrid scaffolds mineralized with calcium carbonate for tissue engineering: Analysis of local enzyme and small-molecule drug delivery, cell response and antibacterial performance |f R. V. Chernozem, M. A. Surmeneva, A. A. Abalymov [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 74 tit.] | ||
| 330 | |a As the next generation of materials for bone reconstruction, we propose a multifunctional bioactive platform based on biodegradable piezoelectric polyhydroxybutyrate (PHB) fibrous scaffolds for tissue engineering with drug delivery capabilities. To use the entire surface area for local drug delivery, the scaffold surface was uniformly biomineralized with biocompatible calcium carbonate (CaCO3) microparticles in a vaterite–calcite polymorph mixture. CaCO3-coated PHB scaffolds demonstrated a similar elastic modulus compared to that of pristine one. However, reduced tensile strength and failure strain of 31% and 67% were observed, respectively. The biomimetic immobilization of enzyme alkaline phosphatase (ALP) and glycopeptide antibiotic vancomycin (VCM) preserved the CaCO3-mineralized PHB scaffold morphology and resulted in partial recrystallization of vaterite to calcite. In comparison to pristine scaffolds, the loading efficiency of CaCO3-mineralized PHB scaffolds was 4.6 and 3.5 times higher for VCM and ALP, respectively. Despite the increased number of cells incubated with ALP-immobilized scaffolds (up to 61% for non-mineralized and up to 36% for mineralized), the CaCO3-mineralized PHB scaffolds showed cell adhesion; those containing both VCM and ALP molecules had the highest cell density. Importantly, no toxicity for pre-osteoblastic cells was detected, even in the VCM-immobilized scaffolds. In contrast with antibiotic-free scaffolds, the VCM-immobilized ones had a pronounced antibacterial effect against gram-positive bacteria Staphylococcus aureus. Thus, piezoelectric hybrid PHB scaffolds modified with CaCO3 layers and immobilized VCM/ALP are promising materials in bone tissue engineering. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Materials Science and Engineering: C | ||
| 463 | |t Vol. 122 |v [111909, 10 p.] |d 2021 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a polyhydroxybutyrate | |
| 610 | 1 | |a scaffold | |
| 610 | 1 | |a CaCO3 | |
| 610 | 1 | |a antibacterial effect | |
| 610 | 1 | |a bone tissue engineering | |
| 610 | 1 | |a полигидроксибутират | |
| 610 | 1 | |a строительные леса | |
| 610 | 1 | |a антибактериальные свойства | |
| 701 | 1 | |a Chernozem |b R. V. |c physicist |c Associate Professor of Tomsk Polytechnic University |f 1992- |g Roman Viktorovich |3 (RuTPU)RU\TPU\pers\36450 |9 19499 | |
| 701 | 1 | |a Surmeneva |b M. A. |c specialist in the field of material science |c engineer-researcher of Tomsk Polytechnic University, Associate Scientist |f 1984- |g Maria Alexandrovna |3 (RuTPU)RU\TPU\pers\31894 |9 15966 | |
| 701 | 1 | |a Abalymov |b A. A. | |
| 701 | 1 | |a Parakhonskiy |b B. V. |g Bogdan | |
| 701 | 1 | |a Rigole |b P. |g Petra | |
| 701 | 1 | |a Coenye |b T. |g Tom | |
| 701 | 1 | |a Surmenev |b R. A. |c physicist |c Associate Professor of Tomsk Polytechnic University, Senior researcher, Candidate of physical and mathematical sciences |f 1982- |g Roman Anatolievich |3 (RuTPU)RU\TPU\pers\31885 |9 15957 | |
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