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Wang Z, Shang J, Zhang Z. Composite or Modified Hydroxyapatite Microspheres as Drug Delivery Carrier for Bone and Tooth Tissue Engineering. Curr Med Chem 2024; 31:CMC-EPUB-139349. [PMID: 38523515 DOI: 10.2174/0109298673303632240320073606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 02/27/2024] [Accepted: 03/13/2024] [Indexed: 03/26/2024]
Abstract
Since hydroxyapatite (HAp) is an important constituent of bone and teeth, it has excellent biocompatibility and bioactivity, good osteoconductive effects and the ability to induce bone formation as a material for bone or tooth repair and replacement. At present, widely used HAp microspheres have some characteristics, such as large specific surface area, light mass, good injection properties, good fluidity, and low aggregation ability, but they are difficult to really meet the biological and clinical needs due to their own mechanical property defects, such as low strength, brittleness, and poor plasticity. Based on the current research status of HAp microspheres, we summarize the research progress of various types of composite microspheres, including inorganic materials, natural polymer materials and synthetic polymer materials, and further analyze the advantages of HAp composite microspheres loaded with drug molecules, proteins and bioactive factors, so as to explore the development prospect of HAp composite microspheres as scaffolds for constructing sustained release systems. It provides a theoretical basis and research direction to prepare HAp composite micro-spheres with superior comprehensive properties so that they can be better applied in bone tissue regeneration and tooth regeneration engineering.
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Affiliation(s)
- Zhe Wang
- Tianjin Stomatological Hospital, School of Medicine, Nankai University, Tianjin, 300000, China
- Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, Tianjin, 300041, China
| | - Jiaxin Shang
- Tianjin Stomatological Hospital, School of Medicine, Nankai University, Tianjin, 300000, China
- Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, Tianjin, 300041, China
| | - Zheng Zhang
- Tianjin Stomatological Hospital, School of Medicine, Nankai University, Tianjin, 300000, China
- Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, Tianjin, 300041, China
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Pei B, Hu M, Wu X, Lu D, Zhang S, Zhang L, Wu S. Investigations into the effects of scaffold microstructure on slow-release system with bioactive factors for bone repair. Front Bioeng Biotechnol 2023; 11:1230682. [PMID: 37781533 PMCID: PMC10537235 DOI: 10.3389/fbioe.2023.1230682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 09/01/2023] [Indexed: 10/03/2023] Open
Abstract
In recent years, bone tissue engineering (BTE) has played an essential role in the repair of bone tissue defects. Although bioactive factors as one component of BTE have great potential to effectively promote cell differentiation and bone regeneration, they are usually not used alone due to their short effective half-lives, high concentrations, etc. The release rate of bioactive factors could be controlled by loading them into scaffolds, and the scaffold microstructure has been shown to significantly influence release rates of bioactive factors. Therefore, this review attempted to investigate how the scaffold microstructure affected the release rate of bioactive factors, in which the variables included pore size, pore shape and porosity. The loading nature and the releasing mechanism of bioactive factors were also summarized. The main conclusions were achieved as follows: i) The pore shapes in the scaffold may have had no apparent effect on the release of bioactive factors but significantly affected mechanical properties of the scaffolds; ii) The pore size of about 400 μm in the scaffold may be more conducive to controlling the release of bioactive factors to promote bone formation; iii) The porosity of scaffolds may be positively correlated with the release rate, and the porosity of 70%-80% may be better to control the release rate. This review indicates that a slow-release system with proper scaffold microstructure control could be a tremendous inspiration for developing new treatment strategies for bone disease. It is anticipated to eventually be developed into clinical applications to tackle treatment-related issues effectively.
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Affiliation(s)
- Baoqing Pei
- Beijing Key Laboratory for Design and Evaluation Technology of Advanced Implantable and Interventional Medical Devices, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Mengyuan Hu
- Beijing Key Laboratory for Design and Evaluation Technology of Advanced Implantable and Interventional Medical Devices, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Xueqing Wu
- Beijing Key Laboratory for Design and Evaluation Technology of Advanced Implantable and Interventional Medical Devices, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Da Lu
- Beijing Key Laboratory for Design and Evaluation Technology of Advanced Implantable and Interventional Medical Devices, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Shijia Zhang
- Beijing Key Laboratory for Design and Evaluation Technology of Advanced Implantable and Interventional Medical Devices, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Le Zhang
- Beijing Key Laboratory for Design and Evaluation Technology of Advanced Implantable and Interventional Medical Devices, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Shuqin Wu
- School of Big Data and Information, Shanxi College of Technology, Taiyuan, Shanxi, China
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Chen R, Yu J, Gong HL, Jiang Y, Xue M, Xu N, Wei DX, Shi C. An easy long-acting BMP7 release system based on biopolymer nanoparticles for inducing osteogenic differentiation of adipose mesenchymal stem cells. J Tissue Eng Regen Med 2020; 14:964-972. [PMID: 32441466 DOI: 10.1002/term.3070] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 05/07/2020] [Accepted: 05/15/2020] [Indexed: 12/16/2022]
Abstract
In contrast to the early acting bone morphogenetic protein 2, bone morphogenetic protein 7 (BMP7) plays a decisive role mainly in the late stages of bone formation. To overcome deactivation and degradation of expensive BMP7, we designed a novel long-acting BMP7 release system based on poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P34HB) nanoparticles to enable the induction of osteogenic differentiation in human adipose mesenchymal stem cells (ADSCs). In order to improve the encapsulation efficiency of BMP7 and avoid damage by organic solvents, BMP7 was modified and protected using the biosurfactant soybean lecithin. In an in vitro test, BMP7-soybean lecithin-P34HB nanoparticles (BMP7-SPNPs) showed a short initial burst of BMP7 release during the first 24h, followed by a steady increase to a cumulative 80% release in 20days. Compared with the rapid release of control P34HB nanoparticles without soybean phospholipids loaded with BMP7 without soybean lecithin, BMP7-SPNPs significantly reduced the initial burst of BMP7 release and stabilized the content of BMP7 to allow long-term osteogenic differentiation during the late phase of bone development. Human ADSCs treated with BMP7-SPNPs showed higher alkaline phosphatase activity and higher expression levels of genetic markers of osteogenic differentiation compared with the control group. Thus, the results indicate that BMP7-SPNPs can be used as a rapid and long-acting BMP7 delivery system for osteogenic differentiation.
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Affiliation(s)
- Rui Chen
- Department of Orthopaedics, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Jiangming Yu
- Department of Orthopaedics, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Hai-Lun Gong
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine, Northwest University, Xi'an, China
| | - Yuquan Jiang
- Department of Orthopaedics, Joint Logistic Support Force NO.925 Hospital of PLA, Guiyang, China
| | - Mintao Xue
- Department of Orthopaedics, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Ning Xu
- Department of Orthopaedics, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Dai-Xu Wei
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Department of Life Sciences and Medicine, Northwest University, Xi'an, China
| | - Changgui Shi
- Department of Orthopaedics, Changzheng Hospital, Second Military Medical University, Shanghai, China
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Huo Y, Wang Q, Liu Y, Wang J, Li Q, Li Z, Dong Y, Huang Y, Wang L. A temperature-sensitive phase-change hydrogel of topotecan achieves a long-term sustained antitumor effect on retinoblastoma cells. Onco Targets Ther 2019; 12:6069-6082. [PMID: 31534347 PMCID: PMC6681573 DOI: 10.2147/ott.s214024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 07/08/2019] [Indexed: 12/24/2022] Open
Abstract
Background Retinoblastoma (Rb) is one of the most common malignancies among children. Following early diagnosis and prompt treatment, the clinical outcome or prognosis of Rb is promising. However, the prognosis or survival rates of patients with late-stage Rb remain poor. Current therapeutic strategies for advanced Rb mainly involve the use of advanced chemotherapeutic options. However, the efficacy of these strategies is not satisfactory. Therefore, the development of novel strategies to achieve a more effective antitumor effect on late-stage Rb is of crucial importance. Methods and materials Topotecan was dissolved in phosphate-buffered saline and prepared into a temperature-sensitive phase-change hydrogel (termed Topo-Gel). Moreover, Topo-Gel was injected into tumor tissues formed by Y79 cells (an Rb cell line) in nude mice to examine the long-term release and long-acting antitumor effect of Topo-Gel on Rb tumors. Results Topo-Gel transforms from liquid to a hydrogel at near body temperatures (phase-change temperature [T1/2] was 37.23±0.473 °C), and maintains the slow release of topotecan in Rb tumor tissues. Following the subcutaneous injection of Topo-Gel, the treatment induced long-acting inhibition of tumor growth and relieved the adverse effects associated with topotecan. Topo-Gel, a temperature-sensitive phase-change hydrogel, is a slow-release system that prolongs the presence of topotecan in Rb tissues, and preserves the efficacy of topotecan in the long term. Conclusion Preparation of topotecan into a temperature-sensitive phase-change hydrogel achieves a long-term sustained antitumor effect on Rb cells, and may be a useful strategy for the treatment of intraocular Rb.
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Affiliation(s)
- Yan Huo
- Department of Ophthalmology, The 1st Medical Center Of Chinese PLA General Hospital , Beijing 100853, People's Republic of China.,The Institutional Animal Care and Use Committee of National Beijing Center for Drug Safety Assessment, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing 100850, People's Republic of China
| | - Qun Wang
- Department of Ophthalmology, The 1st Medical Center Of Chinese PLA General Hospital , Beijing 100853, People's Republic of China
| | - Ying Liu
- Department of Ophthalmology, The 1st Medical Center Of Chinese PLA General Hospital , Beijing 100853, People's Republic of China
| | - Junyi Wang
- Department of Ophthalmology, The 1st Medical Center Of Chinese PLA General Hospital , Beijing 100853, People's Republic of China
| | - Qian Li
- Department of Ophthalmology, The 1st Medical Center Of Chinese PLA General Hospital , Beijing 100853, People's Republic of China
| | - Zongyuan Li
- Department of Ophthalmology, The 1st Medical Center Of Chinese PLA General Hospital , Beijing 100853, People's Republic of China
| | - Yan Dong
- Department of Ophthalmology, The 1st Medical Center Of Chinese PLA General Hospital , Beijing 100853, People's Republic of China
| | - Yifei Huang
- Department of Ophthalmology, The 1st Medical Center Of Chinese PLA General Hospital , Beijing 100853, People's Republic of China
| | - Liqiang Wang
- Department of Ophthalmology, The 1st Medical Center Of Chinese PLA General Hospital , Beijing 100853, People's Republic of China
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de Medeiros TTB, de Azevedo Silva AM, da Silva AL, Bezerra LR, da Silva Agostini DL, de Oliveira DLV, Mazzetto SE, Kotzebue LRV, Oliveira JR, Souto GSB, de Barros Carvalho A, Netto AJ, Oliveira RL. Carnauba wax as a wall material for urea microencapsulation. J Sci Food Agric 2019; 99:1078-1087. [PMID: 30022472 DOI: 10.1002/jsfa.9275] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Revised: 05/27/2018] [Accepted: 07/15/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND The high ureolytic activity of rumen microbiota is a concern when urea is used in ruminant feed, because it leads to fast urea conversion, resulting in possible intoxication and lower nitrogen utilization. This study intended to microencapsulate urea using carnauba wax to obtain slow-release systems in the rumen. The experiment was conducted in a randomized block design, arranged in a 3 × 2 factorial, with the urea encapsulated with carnauba wax in ratios of 1 : 2; 1 : 3, and 1 : 4 (UME 2; UME 3, and UME 4) and two particles sizes (small, PS ; and large, PL ). RESULTS All formulations showed excellent properties, including inhibition of urea hygroscopicity. The formulation UME 2 exhibited the greatest yield (91.6%) and microencapsulation efficiency (99.6%) values, whereas the formulation UME 4 presented the greatest thermal stability (259.5 °C) and lowest moisture content (1.81%). The UME 2 formulation presented a slower release than the other UME formulations studied. CONCLUSION The production of urea microspheres using carnauba wax was successful for all microencapsulated systems developed, evidencing the promising potential for use in ruminant animal diets. The UME 2 formulation with large particles is the most recommended because it permitted greater resistance to microbial attack, allowing a slower release of urea into the rumen, reducing the risk of intoxication or ruminal alkalosis. © 2018 Society of Chemical Industry.
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Affiliation(s)
| | | | | | | | - Deuber L da Silva Agostini
- Department of Physics, Chemistry, and Biology, State University of São Paulo, Presidente Prudente, Brazil
| | | | - Selma E Mazzetto
- Department of Organic and Inorganic Chemistry, Federal University of Ceará, Fortaleza, Brazil
| | - Lloyd R Viana Kotzebue
- Department of Organic and Inorganic Chemistry, Federal University of Ceará, Fortaleza, Brazil
| | | | | | | | - Antonio J Netto
- Department of Animal Science, Federal University of Campina Grande, Patos, Brazil
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