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Zhao T, Ding X, Lin C, Lin X, Xie Z. In situ photo-initiated polymerized oligonucleotide-functionalized hydrophilic capillary affinity monolith for highly selective in-tube microextraction of ochratoxin A mycotoxin. Mikrochim Acta 2021; 188:341. [PMID: 34523048 DOI: 10.1007/s00604-021-04997-6] [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: 06/23/2021] [Accepted: 08/23/2021] [Indexed: 11/24/2022]
Abstract
A photo-initiated polymerized oligonucleotide-grafted hydrophilic affinity monolithic column was synthesized in situ, and exploited for selective in-tube solid phase micro-extraction (IT-SPME) protocol towards the sensitive detection of ochratoxin A (OTA). Only 7 min was required for the rapid polymerization of aptamer-based affinity monolith, which was much less than the reaction time of most thermal polymerization (12-16 h) and sol-gel chemistry methods (up to 52 h). Characterizations such as polymerization recipes, structure morphology, FTIR spectrum, elemental mapping, mechanical stability, and specific recognition performance were evaluated. A significantly hydrophilic nature with a low contact angle of 15° was observed, and a mixed-mode mechanism including aptamer affinity recognition and hydrophilic interaction (HI) was employed. By coupling with HPLC-fluorescence detection, the highly specific online recognition performance was achieved with an extremely low nonspecific adsorption of the analogues. The calibration curve of OTA was obtained in the concentration range 0.05-50.00 ng·mL-1 with a limit of detection (LOD, S/N = 3) of 0.012 ng·mL-1. Applied to sample analysis, acceptable recovery yields of 95.1 ± 1.4% - 99.5 ± 2.2% (n = 3) were obtained in beer and red wine. The proposed method lighted a promising way to efficiently preparing a hydrophilic aptamer-affinity monolith for highly specific recognition of trace mycotoxin by IT-SPME coupled with HPLC. A hydrophilic oligonucleotide-based affinity capillary monolith was explored via in situ photopolymerization for overcoming low preparation efficiency and achieving high-performance online IT-SPME of OTA mycotoxin.
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Affiliation(s)
- Tingting Zhao
- Institute of Food Safety and Environment Monitoring, Fuzhou University, Fuzhou, 350108, People's Republic of China
| | - Xinyue Ding
- Institute of Food Safety and Environment Monitoring, Fuzhou University, Fuzhou, 350108, People's Republic of China
| | - Chenchen Lin
- Institute of Food Safety and Environment Monitoring, Fuzhou University, Fuzhou, 350108, People's Republic of China
| | - Xucong Lin
- Institute of Food Safety and Environment Monitoring, Fuzhou University, Fuzhou, 350108, People's Republic of China.
| | - Zenghong Xie
- Institute of Food Safety and Environment Monitoring, Fuzhou University, Fuzhou, 350108, People's Republic of China
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Ahmadipour S, Varshosaz J, Hashemibeni B, Safaeian L, Manshaei M. Polyhedral Oligomeric Silsesquioxane /Platelets Rich Plasma/Gelrite-Based Hydrogel Scaffold for Bone Tissue Engineering. Curr Pharm Des 2021; 26:3147-3160. [PMID: 32160839 DOI: 10.2174/1381612826666200311124732] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 01/17/2020] [Indexed: 01/22/2023]
Abstract
BACKGROUND Polyhedral oligomeric silsesquioxane (POSS) is a monomer with silicon structure and an internal nanometric cage. OBJECTIVE The purpose of this study was to provide an injectable hydrogel that could be easily located in open or closed bone fractures and injuries, and also to reduce the possible risks of infections caused by bone graft either as an allograft or an autograft. METHODS Various formulations of temperature sensitive hydrogels containing hydroxyapatite, Gelrite, POSS and platelets rich plasma (PRP), such as the co-gelling agent and cell growth enhancer, were prepared. The hydrogels were characterized for their injectability, gelation time, phase transition temperature and viscosity. Other physical properties of the optimized formulation including compressive stress, compressive strain and Young's modulus as mechanical properties, as well as storage and loss modulus, swelling ratio, biodegradation behavior and cell toxicity as rheometrical parameters were studied on human osteoblast MG-63 cells. Alizarin red tests were conducted to study the qualitative and quantitative osteogenic capability of the designed scaffold, and the cell adhesion to the scaffold was visualized by scanning electron microscopy. RESULTS The results demonstrated that the hydrogel scaffold mechanical force and injectability were 3.34±0.44 Mpa and 12.57 N, respectively. Moreover, the scaffold showed higher calcium granules production in alizarin red staining compared to the control group. The proliferation of the cells in G4.5H1P0.03PRP10 formulation was significantly higher than in other formulations (p<0.05). CONCLUSION The optimized Gelrite/Hydroxyapatite/POSS/PRP hydrogel scaffold has useful impacts on osteoblasts activity, and may be beneficial for local drug delivery in complications including a break or bone loss.
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Affiliation(s)
- Saeedeh Ahmadipour
- Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Jaleh Varshosaz
- Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Batool Hashemibeni
- Department of Anatomical Sciences, Faculty of Medicine; Torabinejad Dental Research Center, Dental School, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Leila Safaeian
- Department of Pharmacology and Toxicology, School of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Maziar Manshaei
- Dental Research Center, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
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Wang J, Liu L, Wang A, Liu X, Zhang Y, Wang Z, Dou J. Smooth Muscle Cell Responses to Poly(ε-Caprolactone) Triacrylate Networks with Different Crosslinking Time. Int J Mol Sci 2020; 21:ijms21238932. [PMID: 33255621 PMCID: PMC7728059 DOI: 10.3390/ijms21238932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 11/21/2020] [Accepted: 11/23/2020] [Indexed: 11/16/2022] Open
Abstract
Poly(ε-caprolactone) triacrylate (PCLTA) is attractive in tissue engineering because of its good biocompatibility and processability. The crosslinking time strongly influences PCLTAs cellular behaviors. To investigate these influences, PCLTAs with different molecular weights were crosslinked under UV light for times ranging from 1 to 20 min. The crosslinking efficiency of PCLTA increased with decreasing the molecular weight and increasing crosslinking time which could increase the gel fraction and network stiffness and decrease the swelling ratio. Then, the PCLTA networks crosslinked for different time were used as substrates for culturing rat aortic smooth muscle cells (SMCs). SMC attachment and proliferation all increased when the PCLTA molecular weight increased from 8k to 10k and then to 20k at the same crosslinking time. For the same PCLTA, SMC attachment, proliferation, and focal adhesions increased with increasing the crosslinking time, in particular, between the substrates crosslinked for less than 3 min and longer than 5 min. This work will provide a good experimental basis for the application of PCLTA.
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Affiliation(s)
- Jing Wang
- School of Energy Sciences and Engineering, Nanjing Tech University, Nanjing 211816, China; (J.W.); (X.L.)
| | - Li Liu
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Nanjing Tech University, Nanjing 211816, China; (L.L.); (A.W.)
| | - Aoning Wang
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Nanjing Tech University, Nanjing 211816, China; (L.L.); (A.W.)
| | - Xiang Liu
- School of Energy Sciences and Engineering, Nanjing Tech University, Nanjing 211816, China; (J.W.); (X.L.)
| | - Yi Zhang
- School of Energy Sciences and Engineering, Nanjing Tech University, Nanjing 211816, China; (J.W.); (X.L.)
- Correspondence: (Y.Z.); (Z.W.); (J.D.)
| | - Zhoulu Wang
- School of Energy Sciences and Engineering, Nanjing Tech University, Nanjing 211816, China; (J.W.); (X.L.)
- Correspondence: (Y.Z.); (Z.W.); (J.D.)
| | - Jinbo Dou
- School of Energy Sciences and Engineering, Nanjing Tech University, Nanjing 211816, China; (J.W.); (X.L.)
- Department of Materials Science and Engineering, The University of Tennessee, Knoxville, TN 37996, USA
- Correspondence: (Y.Z.); (Z.W.); (J.D.)
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Cai Z, Wan Y, Becker ML, Long YZ, Dean D. Poly(propylene fumarate)-based materials: Synthesis, functionalization, properties, device fabrication and biomedical applications. Biomaterials 2019; 208:45-71. [PMID: 30991217 DOI: 10.1016/j.biomaterials.2019.03.038] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 03/04/2019] [Accepted: 03/23/2019] [Indexed: 12/22/2022]
Abstract
Poly(propylene fumarate) (PPF) is a biodegradable polymer that has been investigated extensively over the last three decades. It has led many scientists to synthesize and fabricate a variety of PPF-based materials for biomedical applications due to its controllable mechanical properties, tunable degradation and biocompatibility. This review provides a comprehensive overview of the progress made in improving PPF synthesis, resin formulation, crosslinking, device fabrication and post polymerization modification. Further, we highlight the influence of these parameters on biodegradation, biocompatibility, and their use in a number of regenerative medicine applications, especially bone tissue engineering. In particular, the use of 3D printing techniques for the fabrication of PPF-based scaffolds is extensively reviewed. The recent invention of a ring-opening polymerization method affords precise control of PPF molecular mass, molecular mass distribution (ƉM) and viscosity. Low ƉM facilitates time-certain resorption of 3D printed structures. Novel post-polymerization and post-printing functionalization methods have accelerated the expansion of biomedical applications that utilize PPF-based materials. Finally, we shed light on evolving uses of PPF-based materials for orthopedics/bone tissue engineering and other biomedical applications, including its use as a hydrogel for bioprinting.
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Affiliation(s)
- Zhongyu Cai
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore; Department of Chemistry, University of Pittsburgh, Chevron Science Center, 219 Parkman Avenue, Pittsburgh, PA 15260, United States.
| | - Yong Wan
- Collaborative Innovation Center for Nanomaterials, College of Physics, Qingdao University, No. 308 Ningxia Road, Qingdao, 266071, Shandong Province, China
| | - Matthew L Becker
- Department of Polymer Science, The University of Akron, Akron, OH 44325, United States
| | - Yun-Ze Long
- Collaborative Innovation Center for Nanomaterials, College of Physics, Qingdao University, No. 308 Ningxia Road, Qingdao, 266071, Shandong Province, China; Industrial Research Institute of Nonwovens & Technical Textiles, Qingdao University, No. 308 Ningxia Road, Qingdao, 266071, Shandong Province, China.
| | - David Dean
- Department of Plastic & Reconstructive Surgery, The Ohio State University, Columbus, OH 43210, United States.
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Ye Q, Zhou H, Xu J. Cubic Polyhedral Oligomeric Silsesquioxane Based Functional Materials: Synthesis, Assembly, and Applications. Chem Asian J 2016; 11:1322-37. [DOI: 10.1002/asia.201501445] [Citation(s) in RCA: 122] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2015] [Indexed: 12/28/2022]
Affiliation(s)
- Qun Ye
- Institute of Materials Research and Engineering; Agency for Science, Research and Engineering (A*STAR); 2 Fusionopolis Way, Innovis, #08-03 Singapore 138634 Singapore
| | - Hui Zhou
- Institute of Materials Research and Engineering; Agency for Science, Research and Engineering (A*STAR); 2 Fusionopolis Way, Innovis, #08-03 Singapore 138634 Singapore
| | - Jianwei Xu
- Institute of Materials Research and Engineering; Agency for Science, Research and Engineering (A*STAR); 2 Fusionopolis Way, Innovis, #08-03 Singapore 138634 Singapore
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Du Y, Yu M, Chen X, Ma PX, Lei B. Development of Biodegradable Poly(citrate)-Polyhedral Oligomeric Silsesquioxanes Hybrid Elastomers with High Mechanical Properties and Osteogenic Differentiation Activity. ACS APPLIED MATERIALS & INTERFACES 2016; 8:3079-3091. [PMID: 26765285 DOI: 10.1021/acsami.5b10378] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Biodegradable elastomeric biomaterials have attracted much attention in tissue engineering due to their biomimetic viscoelastic behavior and biocompatibility. However, the low mechanical stability at hydrated state, fast biodegradation in vivo, and poor osteogenic activity greatly limited bioelastomers applications in bone tissue regeneration. Herein, we develop a series of poly(octanediol citrate)-polyhedral oligomeric silsesquioxanes (POC-POSS) hybrids with highly tunable elastomeric behavior (hydrated state) and biodegradation and osteoblasts biocompatibility through a facile one-pot thermal polymerization strategy. POC-POSS hybrids show significantly improved stiffness and ductility in either dry or hydrated conditions, as well as good antibiodegradation ability (20-50% weight loss in 3 months). POC-POSS hybrids exhibit significantly enhanced osteogenic differentiation through upregulating alkaline phosphatase (ALP) activity, calcium deposition, and expression of osteogenic markers (ALPL, BGLAP, and Runx2). The high mechanical stability at hydrated state and enhanced osteogenic activity make POC-POSS hybrid elastomers promising as scaffolds and nanoscale vehicles for bone tissue regeneration and drug delivery. This study may also provide a new strategy (controlling the stiffness under hydrated condition) to design advanced hybrid biomaterials with high mechanical properties under physiological condition for tissue regeneration applications.
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Affiliation(s)
- Yuzhang Du
- Frontier Institute of Science and Technology, Xi'an Jiaotong University , Xi'an, Shaanxi 710054, China
| | - Meng Yu
- Frontier Institute of Science and Technology, Xi'an Jiaotong University , Xi'an, Shaanxi 710054, China
| | - Xiaofeng Chen
- National Engineering Research Center for Tissue Restoration and Reconstruction , Guangzhou 510000, Guangdong, China
| | - Peter X Ma
- Department of Biologic and Materials Sciences, University of Michigan , Ann Arbor 48109-2009, Michigan, United States
- Department of Biomedical Engineering, University of Michigan , Ann Arbor 48109-2009, Michigan, United States
- Macromolecular Science and Engineering Center, University of Michigan , Ann Arbor, Michigan 48109-2009, United States
| | - Bo Lei
- Frontier Institute of Science and Technology, Xi'an Jiaotong University , Xi'an, Shaanxi 710054, China
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Manavitehrani I, Fathi A, Badr H, Daly S, Negahi Shirazi A, Dehghani F. Biomedical Applications of Biodegradable Polyesters. Polymers (Basel) 2016; 8:E20. [PMID: 30979116 PMCID: PMC6432531 DOI: 10.3390/polym8010020] [Citation(s) in RCA: 260] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 01/08/2016] [Accepted: 01/11/2016] [Indexed: 01/08/2023] Open
Abstract
The focus in the field of biomedical engineering has shifted in recent years to biodegradable polymers and, in particular, polyesters. Dozens of polyester-based medical devices are commercially available, and every year more are introduced to the market. The mechanical performance and wide range of biodegradation properties of this class of polymers allow for high degrees of selectivity for targeted clinical applications. Recent research endeavors to expand the application of polymers have been driven by a need to target the general hydrophobic nature of polyesters and their limited cell motif sites. This review provides a comprehensive investigation into advanced strategies to modify polyesters and their clinical potential for future biomedical applications.
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Affiliation(s)
- Iman Manavitehrani
- School of Chemical and Biomolecular Engineering, University of Sydney, NSW 2006, Australia.
| | - Ali Fathi
- School of Chemical and Biomolecular Engineering, University of Sydney, NSW 2006, Australia.
| | - Hesham Badr
- School of Chemical and Biomolecular Engineering, University of Sydney, NSW 2006, Australia.
| | - Sean Daly
- School of Chemical and Biomolecular Engineering, University of Sydney, NSW 2006, Australia.
| | - Ali Negahi Shirazi
- School of Chemical and Biomolecular Engineering, University of Sydney, NSW 2006, Australia.
| | - Fariba Dehghani
- School of Chemical and Biomolecular Engineering, University of Sydney, NSW 2006, Australia.
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8
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Abstract
Multimethacrylate functionalized cage silsesquioxane is a highly polymerizable monomer that can also act as a ligand coordinating agent to form luminescent hybrid complex with rare earth ions.
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Affiliation(s)
- Rong Shen
- Key Laboratory of Special Functional Aggregated Materials
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
| | - Shengyu Feng
- Key Laboratory of Special Functional Aggregated Materials
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
| | - Hongzhi Liu
- Key Laboratory of Special Functional Aggregated Materials
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
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10
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Gao Q, Hu B, Ning Q, Ye C, Xie J, Ye J, Gao C. A primary study of poly(propylene fumarate)-2-hydroxyethyl methacrylate copolymer scaffolds for tarsal plate repair and reconstruction in rabbit eyelids. J Mater Chem B 2015; 3:4052-4062. [PMID: 32262627 DOI: 10.1039/c5tb00285k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Eyelid reconstruction includes anterior lamella reconstruction and posterior lamella reconstruction. As an important skeletal component of the posterior lamella, tarsal plates repair is the key issue for eyelid reconstruction. Presently, neither traditional surgery nor autograft/allograft has achieved satisfactory repair effects. Poly(propylene fumarate)-co-2-hydroxyethyl methacrylate (PPF-HEMA) networks with mass ratios of 1 : 0.5, 1 : 1 and 1 : 2 were synthesized and used as the tarsal substitute in this study. Their chemical compositions, swelling ability, and mechanical properties were characterized. Porous scaffolds were fabricated by a gelatin particle leaching method. The in vitro studies of cytotoxicity on human dermal fibroblasts (HDFs) and degradation demonstrated that PPF-HEMA scaffolds did not have noticeable cell cytotoxicity and their degradation rates correlated with the ratio of PPF to HEMA. The PPF-HEMA networks, with mass ratios of 1 : 1 and 1 : 2, and an ADM control were implanted in rabbits with tarsal plate defects for in vivo biocompatibility and degradation behavior evaluation. PPF-HEMA scaffolds provided satisfactory repair results with mild tissue response and biocompatibility to fibroblast growth and fibrous capsulation compared to the ADM control. The tissue compatible and biodegradable PPF-HEMA networks with elastic mechanical properties were proven to be a suitable candidate for tarsal repair.
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Affiliation(s)
- Qi Gao
- Department of Ophthalmology, the Second Affiliated Hospital of Zhejiang University, College of Medicine, Hangzhou, Zhejiang 310009, China.
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Xin Y, Wang H, Liu BW, Yuan JY. Synthesis and MALDI-TOF characterization of β-CD core ATRP initiators and RAFT chain transfers with different degrees of substitution. CHINESE JOURNAL OF POLYMER SCIENCE 2014. [DOI: 10.1007/s10118-015-1572-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Enhanced bone cell functions on poly(ε-caprolactone) triacrylate networks grafted with polyhedral oligomeric silsesquioxane nanocages. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.06.057] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Wu X, Wang S. Integration of photo-crosslinking and breath figures to fabricate biodegradable polymer substrates with tunable pores that regulate cellular behavior. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.02.029] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Hunt JA, Chen R, van Veen T, Bryan N. Hydrogels for tissue engineering and regenerative medicine. J Mater Chem B 2014; 2:5319-5338. [DOI: 10.1039/c4tb00775a] [Citation(s) in RCA: 242] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Injectable hydrogels have become an incredibly prolific area of research in the field of tissue engineering and regenerative medicine, because of their high water content, mechanical similarity to natural tissues, and ease of surgical implantation, hydrogels are at the forefront of biomedical scaffold and drug carrier design.
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Affiliation(s)
- John A. Hunt
- Clinical Engineering
- Institute of Ageing and Chronic Disease
- University of Liverpool
- Liverpool, UK
| | - Rui Chen
- Clinical Engineering
- Institute of Ageing and Chronic Disease
- University of Liverpool
- Liverpool, UK
| | - Theun van Veen
- Clinical Engineering
- Institute of Ageing and Chronic Disease
- University of Liverpool
- Liverpool, UK
| | - Nicholas Bryan
- Clinical Engineering
- Institute of Ageing and Chronic Disease
- University of Liverpool
- Liverpool, UK
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Yuan W, Liu X, Zou H, Ren J. Environment-induced nanostructural dynamical-change based on supramolecular self-assembly of cyclodextrin and star-shaped poly(ethylene oxide) with polyhedral oligomeric silsesquioxane core. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.08.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Chen P, Huang X, Zhang Q, Xi K, Jia X. Hybrid networks based on poly(styrene-co-maleic anhydride) and N-phenylaminomethyl POSS. POLYMER 2013. [DOI: 10.1016/j.polymer.2012.12.047] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Zheng L, Wang Z, Li C, Xiao Y, Zhang D, Guan G, Zhu W. Synthesis, characterization and properties of novel linear poly(butylene fumarate) bearing reactive double bonds. POLYMER 2013. [DOI: 10.1016/j.polymer.2012.12.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Fabritz S, Hörner S, Avrutina O, Kolmar H. Bioconjugation on cube-octameric silsesquioxanes. Org Biomol Chem 2013; 11:2224-36. [DOI: 10.1039/c2ob26807h] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Wu X, Wang S. Regulating MC3T3-E1 cells on deformable poly(ε-caprolactone) honeycomb films prepared using a surfactant-free breath figure method in a water-miscible solvent. ACS APPLIED MATERIALS & INTERFACES 2012; 4:4966-4975. [PMID: 22889037 DOI: 10.1021/am301334s] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Honeycomb poly(ε-caprolactone) (PCL) films with tunable pore diameters of 3.5, 6.0, and 10 μm were fabricated directly from solutions in water-miscible, relatively nontoxic tetrahydrofuran using the breath-figure method without assistance of a surfactant. These honeycomb PCL films were characterized in terms of structures and enhanced hydrophobicity. Aiming at fostering bone tissue engineering outcomes, we cultured mouse preosteoblastic MC3T3-E1 cells on these honeycomb films as well as on the flat control, and evaluated their adhesion, spreading, proliferation, alkaline phosphatase (ALP) activity, and calcium content. These cell behaviors were further correlated with the expression levels of integrin subunits of α(1), α(2), β(1), and bone-specific gene markers of ALP, collagen type I (COL I), osteocalcin (OCN), and osteopontin (OPN). Honeycomb PCL films remarkably promoted MC3T3-E1 cell adhesion, spreading, proliferation, differentiation, and gene expression. This effect was more prominent when the pore diameter was smaller in the studied range. In addition, honeycomb PCL films were stretched into groove-like structures, on which MC3T3-E1 cells were aligned with a smaller cell area, a higher percentage of aligned cells, and a higher cell elongation ratio when the pores were smaller.
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Affiliation(s)
- Xiaohui Wu
- Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996, USA
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Wang K, Cai L, Zhang L, Dong J, Wang S. Biodegradable photo-crosslinked polymer substrates with concentric microgrooves for regulating MC3T3-E1 cell behavior. Adv Healthc Mater 2012. [PMID: 23184743 DOI: 10.1002/adhm.201200030] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Both intrinsic material properties and topographical features are critical in influencing cell-biomaterial interactions. We present a systematic investigation of regulating mouse pre-osteoblastic MC3T3-E1 cell behavior on biodegradable polymer substrates with distinct mechanical properties and concentric microgrooves. The precursors for fabricating substrates used here were two poly(ϵ-caprolactone) triacrylates (PCLTAs) synthesized from poly(ϵ-caprolactone) triols with molecular weights of ∼7000 and ∼10000 g mol(-1) . These two PCLTAs were photo-crosslinked into PCL networks with distinct thermal, rheological, and mechanical properties at physiological temperature because of their different crystallinities and melting temperatures. Microgrooved substrates with four groove widths of 7.5, 16.1, 44.2, and 91.2 μm and three groove depths of 0.2, 1, and 10 μm were prepared through replica molding, i.e., photo-crosslinking PCLTA on micro-fabricated silicon wafers with pre-designed concentric groove patterns. MC3T3-E1 cell attachment and proliferation could be better supported by the stiffer substrates while not significantly influenced by the microgrooves. Microgroove dimensions could regulate MC3T3-E1 cell alignment, nuclear shape and distribution, mineralization, and gene expression. Among the microgrooves with a fixed depth of 10 μm, the smallest width of 7.5 μm could align and elongate the cytoskeleton and nuclei most efficiently. Strikingly, higher mineral deposition and upregulation of osteocalcin gene expression were found in the narrower microgrooves when the groove depth was 10 μm.
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Affiliation(s)
- Kan Wang
- Department of Materials Science and Engineering, The University of Tennessee, Knoxville, TN 37996, USA
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Engstrand J, López A, Engqvist H, Persson C. Polyhedral oligomeric silsesquioxane (POSS)–poly(ethylene glycol) (PEG) hybrids as injectable biomaterials. Biomed Mater 2012; 7:035013. [DOI: 10.1088/1748-6041/7/3/035013] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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