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Zhong X, Wei G, Liu B, Wang C, Wang J, Lu Y, Cui W, Guo H. Polyhedral Oligomeric Silsesquioxane-Based Nanoparticles for Efficient Chemotherapy of Glioblastoma. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2207248. [PMID: 36725316 DOI: 10.1002/smll.202207248] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/10/2023] [Indexed: 05/04/2023]
Abstract
Glioblastoma (GBM) is the most common lethal brain tumor with dismal treatment outcomes and poor response to chemotherapy. As the regulatory center of cytogenetics and metabolism, most tumor chemotherapeutic molecules exert therapeutic effects in the nucleus. Nanodrugs showing the nuclear aggregation effect are expected to eliminate and fundamentally suppress tumor cells. In this study, a nanodrug delivery system based on polyhedral oligomeric silsesquioxane (POSS) is introduced to deliver drugs into the nuclei of GBM cells, effectively enhancing the therapeutic efficacy of chemotherapy. The nanoparticles are modified with folic acid and iRGD peptides molecules to improve their tumor cell targeting and uptake via receptor-mediated endocytosis. Nuclear aggregation allows for the direct delivery of chemotherapeutic drug temozolomide (TMZ) to the tumor cell nuclei, resulting in more significant DNA damage and inhibition of tumor cell proliferation. Herein, TMZ-loaded POSS nanoparticles can significantly improve the survival of GBM-bearing mice. Therefore, the modified POSS nanoparticles may serve as a promising drug-loaded delivery platform to improve chemotherapy outcomes in GBM patients.
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Affiliation(s)
- Xiangyang Zhong
- Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Gang Wei
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
- Department of Radiology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Boyang Liu
- Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Chenyang Wang
- Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Juan Wang
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Yong Lu
- Department of Radiology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Wenguo Cui
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Hongbo Guo
- Neurosurgery Center, The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China on Diagnosis and Treatment of Cerebrovascular Disease, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, 510515, P. R. China
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Zhu Y, Zhao S, Cheng L, Lin Z, Zeng M, Ruan Z, Sun B, Luo Z, Tang Y, Long H. Mg 2+ -mediated autophagy-dependent polarization of macrophages mediates the osteogenesis of bone marrow stromal stem cells by interfering with macrophage-derived exosomes containing miR-381. J Orthop Res 2022; 40:1563-1576. [PMID: 34727384 DOI: 10.1002/jor.25189] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 09/02/2021] [Accepted: 09/30/2021] [Indexed: 02/04/2023]
Abstract
Magnesium ion (Mg2+ ) has received increased attention due to the roles it plays in promoting osteogenesis and preventing inflammation. This study was designed to investigate the mechanism by which Mg2+ influences the osteoblastic differentiation of bone marrow stromal stem cells (BMSCs). The polarization of Mø (macrophages) was measured after treatment with Mg2+ . Meanwhile, autophagy in Mø was measured by detecting LC3B expression. Mø-derived exosomes were isolated and cocultured with BMSCs; after which, osteogenic differentiation was evaluated by Alizarin Red staining and detection of alkaline phosphatase (ALP). Our results showed that Mg2+ could induce autophagy in macrophages and modulate the M1/M2 polarization of macrophages. Mg2+ -mediated macrophages could facilitate the osteogenic differentiation of BMSCs by regulating autophagy, and this facilitation by Mg2+ -mediated macrophages was closely related to macrophage-derived exosomes, and especially exosomes containing miR-381. However, miR-381 in macrophages did not influence autophagy or the polarization of Mg2+ -mediated macrophages. Furthermore, macrophage-derived exosomes containing miR-381 mainly determined the osteogenic differentiation of BMSCs. Mg2+ -mediated macrophages were shown to promote the osteogenic differentiation of BMSCs via autophagy through reducing miR-381 in macrophage-derived exosomes. In conclusion, our results suggest Mg2+ -mediated macrophage-derived exosomes containing miR-381 as novel vehicles for promoting the osteogenic differentiation of BMSCs.
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Affiliation(s)
- Yong Zhu
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, Hunan, PR China
| | - Shushan Zhao
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, Hunan, PR China
| | - Liang Cheng
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, Hunan, PR China
| | - Zhangyuan Lin
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, Hunan, PR China
| | - Min Zeng
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, Hunan, PR China
| | - Zhe Ruan
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, Hunan, PR China
| | - Buhua Sun
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, Hunan, PR China
| | - Zhongwei Luo
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, Hunan, PR China
| | - Yifu Tang
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, Hunan, PR China.,Department of Orthopaedics, Xiangya Third Hospital of Central South University, Changsha, Hunan, PR China
| | - Haitao Long
- Department of Orthopaedics, Xiangya Hospital of Central South University, Changsha, Hunan, PR China
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Hou P, Sun Y, Yang W, Wu H, Sun L, Xiu X, Xiu C, Zhang X, Zhang W. Magnesium promotes osteogenesis via increasing OPN expression and activating CaM/CaMKIV/CREB1 pathway. J Biomed Mater Res B Appl Biomater 2022; 110:1594-1603. [PMID: 35106922 DOI: 10.1002/jbm.b.35020] [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: 11/04/2021] [Revised: 01/05/2022] [Accepted: 01/18/2022] [Indexed: 11/11/2022]
Abstract
Magnesium (Mg) based alloy has been used as a biodegradable implant for fracture repair with considerable efficacy, and it has been proved that magnesium ion (Mg2+ ), one of the degradation products, could stimulate osteogenesis. Here, we investigated the osteogenesis property of magnesium both in vitro and in vivo, and to identify the cellular and molecular mechanisms that mediate these effects. Results showed that magnesium exerts a dose-dependent increase in the proliferation of MC3T3 and MG63 cells, and in the expression of osteopontin (OPN), a promising biomarker of osteogenesis. Subsequently, the protein-protein interaction (PPI) network analysis showed the interactions between calmodulin (CaM) and calmodulin-dependent protein kinase (CaMK) and CREB1. The ratio of p-CaMKIV/CaMKIV and p-CREB1/CREB were increased at protein level in MC3T3 and MG63 cells after treatment with Mg2+ . Dual-luciferase reporter gene assay showed that p-CREB1 could directly bind to OPN promoter and up-regulate the transcription of OPN after nuclear entry. Meanwhile, the expression of OPN and p-CREB1, which increased after Mg2+ treatment, was down-regulated by sh-CaMKIV or sh-CREB1. Moreover, the mineralized deposit and expression of OPN were reduced after treatment with an inhibitor of CaMKIV, KN93. In addition, massive cavities in the cortical bone around the Mg screw were showed in vivo after injection of KN93. These data indicated that the osteogenic effect of Mg is related to the activation OPN through CaM/CaMKIV/CREB1 signaling pathway.
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Affiliation(s)
- Peng Hou
- Orthopaedic Department, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Yu Sun
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Weichao Yang
- Orthopaedic Department, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Hongliu Wu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Luyuan Sun
- Orthopaedic Department, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Xinjie Xiu
- College of Food Science and Engineering of Qingdao Agricultural University, Qingdao, China
| | - Chaoyang Xiu
- College of Food Science and Engineering of Qingdao Agricultural University, Qingdao, China
| | - Xiaonong Zhang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Wen Zhang
- Orthopaedic Department, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
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Osteogenic Differentiation of Human Mesenchymal Stem Cells Modulated by Surface Manganese Chemistry in SLA Titanium Implants. BIOMED RESEARCH INTERNATIONAL 2022; 2022:5339090. [PMID: 35071596 PMCID: PMC8776456 DOI: 10.1155/2022/5339090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 12/16/2021] [Indexed: 11/17/2022]
Abstract
The manganese (Mn) ion has recently been probed as a potential candidate element for the surface chemistry modification of titanium (Ti) implants in order to develop a more osteogenic surface with the expectation of taking advantage of its strong binding affinity to the integrins on bone-forming cells. However, the exact mechanism of how Mn enhances osteogenesis when introduced into the surface of Ti implants is not clearly understood. This study investigated the corrosion resistance and potential osteogenic capacity of a Mn-incorporated Ti surface as determined by electrochemical measurement and examining the behaviors of human mesenchymal stem cells (MSCs) in a clinically available sandblasted/acid-etched (SLA) oral implant surface intended for future biomedical applications. The surface that resulted from wet chemical treatment exhibited the formation of a Mn-containing nanostructured TiO2 anatase thin film in the SLA implant and improved corrosion resistance. The Mn-incorporated SLA surface displayed sustained Mn ion release and enhanced osteogenesis-related MSC function, which enhanced early cellular events such as spreading, focal adhesion, and mRNA expression of critical adhesion-related genes and promoted full human MSC differentiation into mature osteoblasts. Our findings indicate that surface Mn modification by wet chemical treatment is an effective approach to produce a Ti implant surface with increased osteogenic capacity through the promotion of the osteogenic differentiation of MSCs. The improved corrosion resistance of the resultant surface is yet another important benefit of being able to provide favorable osseointegration interface stability with an increased barrier effect.
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5
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Fang X, Gao K, Huang J, Liu K, Chen L, Piao Y, Liu X, Tang J, Shen Y, Zhou Z. Molecular level precision and high molecular weight peptide dendrimers for drug-specific delivery. J Mater Chem B 2021; 9:8594-8603. [PMID: 34705008 DOI: 10.1039/d1tb01157j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Peptide dendrimers have a broad application in biomedical science due to their biocompatibility, diversity, and multifunctionality, but the precision synthesis of high-molecule weight peptide dendrimers remains challenging. We here report the facile and liquid-phase synthesis of molecular level precision and amino-acid built-in polylysine (PLL) dendrimers with molecular weights as high as ∼60 kDa. Three types of polyhedral oligosilsesquioxane (POSS)-cored PLL dendrimers with phenylalanine, tyrosine, or histidine as building blocks were synthesized. The precise structures of the dendrimers were confirmed by MALDI-TOF MS, GPC, and 1H NMR spectroscopy. The interior functionalized peptide dendrimers improved the encapsulation capability of SN38 and sustained the release profiles. Enhanced molecular interactions between the peptide dendrimers and drugs were explored by both NMR experiments and computer simulations. The peptide dendrimer/SN38 formulations showed potent antitumor activity against multiple cancer cell lines. We believe that this strategy can be applied to the synthesis of tailor-made functional peptide dendrimers for drug-specific delivery and other diverse biomedical applications.
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Affiliation(s)
- Xinhao Fang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Kai Gao
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Jianxiang Huang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Kexin Liu
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Linying Chen
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Ying Piao
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Xiangrui Liu
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Jianbin Tang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Youqing Shen
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China. .,Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311215, China
| | - Zhuxian Zhou
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education and Zhejiang Key Laboratory of Smart Biomaterials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China. .,Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311215, China
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6
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Piorecka K, Janaszewska A, Majkowska M, Marcinkowska M, Kurjata J, Kazmierski S, Radzikowska-Cieciura E, Kost B, Sowinski P, Klajnert-Maculewicz B, Stanczyk WA. Hydrophilic Polyhedral Oligomeric Silsesquioxane, POSS(OH) 32, as a Complexing Nanocarrier for Doxorubicin and Daunorubicin. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E5512. [PMID: 33287168 PMCID: PMC7730793 DOI: 10.3390/ma13235512] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 11/29/2020] [Accepted: 12/01/2020] [Indexed: 01/21/2023]
Abstract
A novel strategy, recently developed by us, to use polyhedral oligomeric silsesquioxanes (POSS) as an anti-cancer drug carrier is presented. Anthracycline:POSS complexes were prepared by simple co-addition of doxorubicin (DOX) or daunorubicin (DAU) with hydrophilic POSS(OH)32. Co-delivery of POSS and anthracyclines led to higher anti-cancer activity towards HeLa (cervical cancer endothelial) and MCF-7 (human breast adenocarcinoma) cell lines. The obtained supramolecular hybrid complexes were characterised by nuclear magnetic resonance (NMR) spectroscopy (nuclear Overhauser effect spectroscopy [NOESY] and homonuclear correlation spectroscopy [COSY]), Fourier transform infrared spectroscopy (FTIR), and dynamic light scattering (DLS). The two-dimensional (2D) NOESY spectra of the complexes showed the cross-correlation peaks for hydroxyl groups of POSS (~4.3-4.8 ppm) with OH groups of DOX and DAU. FTIR showed that hydroxyl group of POSS can interact with amine and hydroxyl groups of DOX and DAU. The viability of HeLa and MCF-7 was analysed with the MTT assay to evaluate the cytotoxicity of free DOX and DAU and the relevant complexes with POSS at different molar ratios. At a low DOX concentration (2.5 µM), for molar ratios 1:1, 1:4, and 1:8 (POSS:DOX), the complexes showed two and three times higher cytotoxicity towards HeLa and MCF-7 cells, respectively, than DOX itself after both 24- and 48-h incubation. The 1 µM concentration for a 1:4 POSS:DOX molecular ratio and the 2.5 µM concentration for all complexes were more toxic towards MCF-7 cells than free DOX after 48-h incubation. In the case of POSS:DAU complexes, there was higher toxicity than that of free drug after 48-h incubation. It can be concluded that the formation of non-covalent complexes increases toxicity of anthracycline drugs towards Hela and MCF-7 cells. The novel complexes are inexpensive to prepare and more effective than free drugs at low systemic toxicity.
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Affiliation(s)
- Kinga Piorecka
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland; (J.K.); (S.K.); (E.R.-C.); (B.K.); (P.S.); (W.A.S.)
| | - Anna Janaszewska
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (M.M.); (M.M.); (B.K.-M.)
| | - Marta Majkowska
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (M.M.); (M.M.); (B.K.-M.)
| | - Monika Marcinkowska
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (M.M.); (M.M.); (B.K.-M.)
| | - Jan Kurjata
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland; (J.K.); (S.K.); (E.R.-C.); (B.K.); (P.S.); (W.A.S.)
| | - Slawomir Kazmierski
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland; (J.K.); (S.K.); (E.R.-C.); (B.K.); (P.S.); (W.A.S.)
| | - Ewa Radzikowska-Cieciura
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland; (J.K.); (S.K.); (E.R.-C.); (B.K.); (P.S.); (W.A.S.)
| | - Bartlomiej Kost
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland; (J.K.); (S.K.); (E.R.-C.); (B.K.); (P.S.); (W.A.S.)
| | - Przemyslaw Sowinski
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland; (J.K.); (S.K.); (E.R.-C.); (B.K.); (P.S.); (W.A.S.)
| | - Barbara Klajnert-Maculewicz
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (M.M.); (M.M.); (B.K.-M.)
| | - Wlodzimierz A. Stanczyk
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland; (J.K.); (S.K.); (E.R.-C.); (B.K.); (P.S.); (W.A.S.)
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7
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Zhang C, Zhang J, Xu T, Sima H, Hou J. Effects of Polyhedral Oligomeric Silsesquioxane (POSS) on Thermal and Mechanical Properties of Polysiloxane Foam. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E4570. [PMID: 33066577 PMCID: PMC7602122 DOI: 10.3390/ma13204570] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/02/2020] [Accepted: 10/05/2020] [Indexed: 01/04/2023]
Abstract
The thermal and mechanical properties of polysiloxane foam are greatly improved by the addition of acrylolsobutyl polyhedral oligomeric silsesquioxane (MA0701, hereinafter referred to as MAPOSS), which has double bonds. The morphologies and properties of the polysiloxane composite foam were characterized. The average cell diameter of the composite foams decreased, while the cell density increased with increasing MAPOSS. Meanwhile, MAPOSS can enhance thermal conductivity and thermal stability. Thermal conductivity increased by 25%, and the temperature at the maximum weight loss rate increased from 556 °C to 599 °C. In addition, MAPOSS also promoted heterogeneous nucleation by functioning as a nucleating agent, which can increase cell density to improve the mechanical properties. The compressive strength of the composite foam increased by 170% compared with that of pure foam. In the composite, MAPOSS increased the cross-linking density by acting as a physical cross-linking point and limited the movement of the segments.
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Affiliation(s)
| | | | | | | | - Jiazi Hou
- School of Materials Science and Engineering, Jilin University, Chang Chun 130022, China; (C.Z.); (J.Z.); (T.X.); (H.S.)
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8
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Calabrese C, Aprile C, Gruttadauria M, Giacalone F. POSS nanostructures in catalysis. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01407a] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In this review we highlight the use of appealing POSS-based nanostructures for both homogeneous and heterogeneous catalytic applications.
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Affiliation(s)
- Carla Calabrese
- Department of Biological
- Chemical and Pharmaceutical Sciences and Technologies
- University of Palermo
- Palermo
- Italy
| | | | - Michelangelo Gruttadauria
- Department of Biological
- Chemical and Pharmaceutical Sciences and Technologies
- University of Palermo
- Palermo
- Italy
| | - Francesco Giacalone
- Department of Biological
- Chemical and Pharmaceutical Sciences and Technologies
- University of Palermo
- Palermo
- Italy
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9
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Zhou W, Wang T, Gan Y, Yang J, Zhu H, Wang A, Wang Y, Xi W. Effect of micropore/microsphere topography and a silicon-incorporating modified titanium plate surface on the adhesion and osteogenic differentiation of BMSCs. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 48:230-241. [PMID: 31851839 DOI: 10.1080/21691401.2019.1699829] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Wuchao Zhou
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Nanchang University, The Key Laboratory of Oral Biomedicine of Jiangxi Province, Medical College of Nanchang University, Nanchang, China
| | - Tiesheng Wang
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Nanchang University, The Key Laboratory of Oral Biomedicine of Jiangxi Province, Medical College of Nanchang University, Nanchang, China
- Department of Oral and Maxillofacial Surgery, Pingxiang People's Hospital, Pingxiang, China
| | - Yanzi Gan
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Nanchang University, The Key Laboratory of Oral Biomedicine of Jiangxi Province, Medical College of Nanchang University, Nanchang, China
| | - Jian Yang
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Nanchang University, The Key Laboratory of Oral Biomedicine of Jiangxi Province, Medical College of Nanchang University, Nanchang, China
| | - Hongshui Zhu
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Nanchang University, The Key Laboratory of Oral Biomedicine of Jiangxi Province, Medical College of Nanchang University, Nanchang, China
| | - Anxun Wang
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Yujiang Wang
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Nanchang University, The Key Laboratory of Oral Biomedicine of Jiangxi Province, Medical College of Nanchang University, Nanchang, China
| | - Weihong Xi
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Nanchang University, The Key Laboratory of Oral Biomedicine of Jiangxi Province, Medical College of Nanchang University, Nanchang, China
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10
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Zhu Y, Zhang CN, Gu YX, Shi JY, Mo JJ, Qian SJ, Qiao SC, Lai HC. The responses of human gingival fibroblasts to magnesium-doped titanium. J Biomed Mater Res A 2019; 108:267-278. [PMID: 31606920 DOI: 10.1002/jbm.a.36813] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 09/26/2019] [Accepted: 10/01/2019] [Indexed: 12/15/2022]
Abstract
The titanium (Ti) implant is widely used in implant dentistry; yet peri-implantitis has always been one of the most common and serious complications. Here, we demonstrated that magnesium-doping would be an effective way of enhancing the integration between implant surfaces and gingival tissues, which is critical to peri-implant health. The magnesium (2.76-6.35 at %) was immobilized onto the titanium substrate by a magnesium plasma immersion ion implantation (Mg-PIII) technique. Mg-PIII treatments did not alter surface topographies of the original titanium substrate but improved its hydrophilicity. The in vitro study including cell viability, adhesion, proliferation, migration, and real-time polymerase chain reaction assays disclosed improved adhesion, proliferation, migration, and extracellular matrix remodeling abilities of human gingival fibroblasts (HGFs) on the magnesium-doped titanium. The results of western blot suggested that the Mg-modified titanium induced the phosphorylation of AKT through the activation of PI3K. Our results revealed that magnesium-doping would potentially enhance soft tissue sealings by promoting cellular functions of HGFs in a dose-dependent manner, boding well for its applications on surfaces of implant necks in early peri-implant soft tissue integrations.
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Affiliation(s)
- Yu Zhu
- Department of Implant Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Chu-Nan Zhang
- Department of Implant Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Ying-Xin Gu
- Department of Implant Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Jun-Yu Shi
- Department of Implant Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Jia-Ji Mo
- Department of Implant Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Shu-Jiao Qian
- Department of Implant Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Shi-Chong Qiao
- Department of Implant Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
| | - Hong-Chang Lai
- Department of Implant Dentistry, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, China
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11
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Zhong D, Wu H, Wu Y, Li Y, Xu X, Yang J, Gu Z. Rational design and facile fabrication of biocompatible triple responsive dendrimeric nanocages for targeted drug delivery. NANOSCALE 2019; 11:15091-15103. [PMID: 31385582 DOI: 10.1039/c9nr04631c] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Multi-responsive polymeric nanoparticles have shown great promise in the sufficient site-specific delivery of drugs in heterogeneous and complicated biological microenvironments, but without great success due to many problems such as sophisticated manufacture process, high cost and cytotoxicity. In this work, a novel triple responsive dendrimeric nanocage (TDN) is fabricated through co-assembling and cross-linking of lipoic acid modified low generation dendrimers with lipoic acid modified polyethylene glycols (PEGs). This nanocage exhibits improved drug loading capacity (about 2 times higher) at a lower temperature and stimuli-responsive drug release profile upon the stimulation of temperature, acid pH and reducing agent. More importantly, the nanocage promotes drug internalization, conduces endosomal escape, and realizes intracellular controlled drug release. Furthermore, the nanocage significantly improves the pharmacokinetics and biodistribution of antitumor drugs, confirming the potent in vivo therapeutic effect with reduced side effects. The rational design and facile fabrication of multi-responsive dendrimeric nanocages provide a "proof-of-concept" for precise targeted drug delivery, and may have great potential for clinical use in the future.
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Affiliation(s)
- Dan Zhong
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan 610064, P.R. China.
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12
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Lin S, Yang G, Jiang F, Zhou M, Yin S, Tang Y, Tang T, Zhang Z, Zhang W, Jiang X. A Magnesium-Enriched 3D Culture System that Mimics the Bone Development Microenvironment for Vascularized Bone Regeneration. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1900209. [PMID: 31380166 PMCID: PMC6662069 DOI: 10.1002/advs.201900209] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 03/20/2019] [Indexed: 05/24/2023]
Abstract
The redevelopment/regeneration pattern of amputated limbs from a blastema in salamander suggests that enhanced regeneration might be achieved by mimicking the developmental microenvironment. Inspired by the discovery that the expression of magnesium transporter-1 (MagT1), a selective magnesium (Mg) transporter, is significantly upregulated in the endochondral ossification region of mouse embryos, a Mg-enriched 3D culture system is proposed to provide an embryonic-like environment for stem cells. First, the optimum concentration of Mg ions (Mg2+) for creating the osteogenic microenvironment is screened by evaluating MagT1 expression levels, which correspond to the osteogenic differentiation capacity of stem cells. The results reveal that Mg2+ selectively activates the mitogen-activated protein kinase/extracellular regulated kinase (MAPK/ERK) pathway to stimulate osteogenic differentiation, and Mg2+ influx via MagT1 is profoundly involved in this process. Then, Mg-enriched microspheres are fabricated at the appropriate size to ensure the viability of the encapsulated cells. A series of experiments show that the Mg-enriched microenvironment not only stimulates the osteogenic differentiation of stem cells but also promotes neovascularization. Obvious vascularized bone regeneration is achieved in vivo using these Mg-enriched cell delivery vehicles. The findings suggest that biomaterials mimicking the developmental microenvironment might be promising tools to enhance tissue regeneration.
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Affiliation(s)
- Sihan Lin
- Department of ProsthodonticsShanghai Engineering Research Center of Advanced Dental Technology and MaterialsShanghai Research Institute of StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyNinth People's HospitalCollege of StomatologyShanghai JiaoTong University School of Medicine639 Zhizaoju RoadShanghai200011P. R. China
| | - Guangzheng Yang
- Department of ProsthodonticsShanghai Engineering Research Center of Advanced Dental Technology and MaterialsShanghai Research Institute of StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyNinth People's HospitalCollege of StomatologyShanghai JiaoTong University School of Medicine639 Zhizaoju RoadShanghai200011P. R. China
| | - Fei Jiang
- Department of ProsthodonticsShanghai Engineering Research Center of Advanced Dental Technology and MaterialsShanghai Research Institute of StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyNinth People's HospitalCollege of StomatologyShanghai JiaoTong University School of Medicine639 Zhizaoju RoadShanghai200011P. R. China
| | - Mingliang Zhou
- Department of ProsthodonticsShanghai Engineering Research Center of Advanced Dental Technology and MaterialsShanghai Research Institute of StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyNinth People's HospitalCollege of StomatologyShanghai JiaoTong University School of Medicine639 Zhizaoju RoadShanghai200011P. R. China
| | - Shi Yin
- Department of ProsthodonticsShanghai Engineering Research Center of Advanced Dental Technology and MaterialsShanghai Research Institute of StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyNinth People's HospitalCollege of StomatologyShanghai JiaoTong University School of Medicine639 Zhizaoju RoadShanghai200011P. R. China
| | - Yanmei Tang
- Department of ProsthodonticsShanghai Engineering Research Center of Advanced Dental Technology and MaterialsShanghai Research Institute of StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyNinth People's HospitalCollege of StomatologyShanghai JiaoTong University School of Medicine639 Zhizaoju RoadShanghai200011P. R. China
| | - Tingting Tang
- Department of Orthopaedic SurgeryNinth People's HospitalShanghai JiaoTong University School of Medicine639 Zhizaoju RoadShanghai200011P. R. China
| | - Zhiyuan Zhang
- Department of Oral and Maxillofacial‐Head and Neck OncologyShanghai Research Institute of StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyNinth People's HospitalCollege of StomatologyShanghai JiaoTong University School of Medicine639 Zhizaoju RoadShanghai200011P. R. China
| | - Wenjie Zhang
- Department of ProsthodonticsShanghai Engineering Research Center of Advanced Dental Technology and MaterialsShanghai Research Institute of StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyNinth People's HospitalCollege of StomatologyShanghai JiaoTong University School of Medicine639 Zhizaoju RoadShanghai200011P. R. China
| | - Xinquan Jiang
- Department of ProsthodonticsShanghai Engineering Research Center of Advanced Dental Technology and MaterialsShanghai Research Institute of StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyNinth People's HospitalCollege of StomatologyShanghai JiaoTong University School of Medicine639 Zhizaoju RoadShanghai200011P. R. China
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13
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Liu J, Liao J, Li Y, Yang Z, Ying Q, Xie Y, Zhou A. Bioactive tetracalcium phosphate/magnesium phosphate composite bone cement for bone repair. J Biomater Appl 2019; 34:239-249. [PMID: 31042122 DOI: 10.1177/0885328219845597] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Jingxian Liu
- 1 School Hospital, Henan Polytechnic University, Jiaozuo, China
| | - Jianguo Liao
- 2 School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo, China
| | - Yanqun Li
- 3 Henan TUORen Medical Group Co. LTD, Xinxiang, China
| | - Zhengpeng Yang
- 2 School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo, China
| | - Qiwei Ying
- 2 School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo, China
| | - Yufen Xie
- 2 School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo, China
| | - Aiguo Zhou
- 2 School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo, China
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14
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Zhao Q, Yi L, Hu A, Jiang L, Hong L, Dong J. Antibacterial and osteogenic activity of a multifunctional microporous coating codoped with Mg, Cu and F on titanium. J Mater Chem B 2019; 7:2284-2299. [PMID: 32254677 DOI: 10.1039/c8tb03377c] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
As preferred materials for bone tissue repair and replacement, titanium (Ti) and its alloys have been widely applied in clinical practice. However, since these materials are bioinert, synostosis cannot occur between these materials and natural bone. Therefore, modifying the surface of Ti with bioactive elements has been the subject of intense research. In the present study, a magnesium-copper-fluorine (Mg-Cu-F) codoped titanium dioxide microporous coating (MCFMT) was prepared on the surface of Ti by micro-arc oxidation (MAO). The coating had a micro/nanoporous structure and was uniformly doped with Mg, Cu and F. In vitro, the MCFMT could promote the adhesion, proliferation, differentiation, mineralization and apoptosis of MC3T3-E1 osteoblasts. In addition, MCFMT could inhibit the growth of Staphylococcus, providing a good antibacterial effect. Further studies showed that MCFMT promoted MAPK expression and might promote osteogenesis through ERK1/2 signaling. Therefore, establishing an MCFMT coating on the Ti surface is a feasible and effective way to improve the biological activity of Ti. This study provides a new concept and method for improving the biological activity of Ti and thus has important theoretical significance and potential applications.
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Affiliation(s)
- Quanming Zhao
- Department of Orthopaedic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
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15
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Wang Y, Ma S, Zhang L, Zhang N, Li Y, Ou J, Shen Y, Ye M. Fast fabrication of a hybrid monolithic column containing cyclic and aliphatic hydrophobic ligands via photo-initiated thiol-ene polymerization. J Sep Sci 2019; 42:1332-1340. [PMID: 30667168 DOI: 10.1002/jssc.201801033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 01/16/2019] [Accepted: 01/16/2019] [Indexed: 11/11/2022]
Abstract
Three monomers, octakis (3-mercaptopropyl) octasilsesquioxane, 1,2,4-trivinylcyclohexane and isophytol were employed to synthesize a novel monolithic stationary phase via photo-initiated thiol-ene click polymerization for reversed-phase liquid chromatography. Several factors such as porogenic system, reaction time and the molar ratio of functional groups were investigated in detail. The resulting poly(POSS-co-TVCH-co-isophytol) monolithic column exhibited suitable permeability for fast separation and outstanding thermal stability. Five alkylbenzenes were employed to evaluate the ability of chromatographic separation of the resulting monolithic columns at different flow rates, and showed the highest column efficiencies of 90,200-93,100 N/m (corresponding to 10.4-10.6 μm of plate height) at a velocity of 0.41 mm/s. The baseline separations of five anilines and eight phenols further proved the applicability of poly(POSS-co-TVCH-co-isophytol) monolithic column in the separation of small molecules.
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Affiliation(s)
- Yan Wang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China.,Key Laboratory of Synthetic and Natural Function Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, P. R. China
| | - Shujuan Ma
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China.,Key Laboratory of Synthetic and Natural Function Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, P. R. China
| | - Luwei Zhang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China.,Key Laboratory of Synthetic and Natural Function Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, P. R. China
| | - Na Zhang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Yanan Li
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Junjie Ou
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China
| | - Yehua Shen
- Key Laboratory of Synthetic and Natural Function Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, P. R. China
| | - Mingliang Ye
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China
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16
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Oligomeric silsesquioxanes containing azobenzene chromophore fragments in an organic frame based on a mixture of silsesquioxanes with epoxy groups. Polym J 2018. [DOI: 10.15407/polymerj.40.04.254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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17
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Wang J, Zaidi SSA, Hasnain A, Guo J, Ren X, Xia S, Zhang W, Feng Y. Multitargeting Peptide-Functionalized Star-Shaped Copolymers with Comblike Structure and a POSS-Core To Effectively Transfect Endothelial Cells. ACS Biomater Sci Eng 2018; 4:2155-2168. [DOI: 10.1021/acsbiomaterials.8b00235] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Jun Wang
- School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Tianjin 300350, China
| | - Syed Saqib Ali Zaidi
- School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Tianjin 300350, China
| | - Ali Hasnain
- School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Tianjin 300350, China
| | - Jintang Guo
- School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Tianjin 300350, China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin), Tianjin 300350, China
| | - Xiangkui Ren
- School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Tianjin 300350, China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin), Tianjin 300350, China
| | - Shihai Xia
- Department of Hepatopancreatobiliary and Splenic Medicine, Affiliated Hospital, Logistics University of People’s Armed Police Force, 220 Chenglin Road, Tianjin 300162, China
| | - Wencheng Zhang
- Department of Physiology and Pathophysiology, Logistics University of Chinese People’s Armed Police Force, 220 Chenglin Road, Tianjin 300162, China
| | - Yakai Feng
- School of Chemical Engineering and Technology, Tianjin University, Yaguan Road 135, Tianjin 300350, China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin), Tianjin 300350, China
- Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300072, P. R. China
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18
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Chanmungkalakul S, Ervithayasuporn V, Hanprasit S, Masik M, Prigyai N, Kiatkamjornwong S. Silsesquioxane cages as fluoride sensors. Chem Commun (Camb) 2018; 53:12108-12111. [PMID: 29072723 DOI: 10.1039/c7cc06647c] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pyrene functionalized silsesquioxane cages (PySQ) not only provide significant fluorescence from pyrene-pyrene excimers with a very large Stokes shift (Δλ = 143 nm, 69 930 cm-1) in DMSO but also exhibit fluoride capture results coincidentally with a π-π* fluorescence enhancement. On the other hand, PySQ-F- in THF significantly exhibits π-π* fluorescence quenching and a color change can be observed with the naked eye from light yellow to deep orange by forming a charge-transfer (CT) complex among the pyrenyl rings. Moreover, PySQ selectively captures F- with a response time of <2 min and with a very low detection limit (1.61 ppb), while 19F NMR is used to confirm encapsulation of F- with Δδ = 19 ppm.
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Affiliation(s)
- Supphachok Chanmungkalakul
- Department of Chemistry, Center of Excellence for Innovation in Chemistry (PERCH-CIC), and Center of Intelligent Materials and Systems, Nanotec Center of Excellence, Faculty of Science, Mahidol University, Rama VI road, Ratchathewi, Bangkok 10400, Thailand.
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19
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Schmidt A, Bekeschus S, Wende K, Vollmar B, von Woedtke T. A cold plasma jet accelerates wound healing in a murine model of full-thickness skin wounds. Exp Dermatol 2018; 26:156-162. [PMID: 27492871 DOI: 10.1111/exd.13156] [Citation(s) in RCA: 126] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/12/2016] [Indexed: 12/24/2022]
Abstract
Cold plasma has been successfully applied in several fields of medicine that require, for example, pathogen inactivation, implant functionalization or alteration of cellular activity. Previous studies have provided evidence that plasma supports the healing of wounds owing to its beneficial mixtures of reactive species and modulation of inflammation in cells and tissues. To investigate the wound healing activity of an atmospheric pressure plasma jet in vivo, we examined the cold plasma's efficacy on dermal regeneration in a murine model of dermal full-thickness ear wound. Over 14 days, female mice received daily plasma treatment. Quantitative analysis by transmitted light microscopy demonstrated a significantly accelerated wound re-epithelialization at days 3-9 in comparison with untreated controls. In vitro, cold plasma altered keratinocyte and fibroblast migration, while both cell types showed significant stimulation resulting in accelerated closure of gaps in scratch assays. This plasma effect correlated with the downregulation of the gap junctional protein connexin 43 which is thought to be important in the regulation of wound healing. In addition, plasma induced profound changes in adherence junctions and cytoskeletal dynamics as shown by downregulation of E-cadherin and several integrins as well as actin reorganization. Our results theorize cold plasma to be a beneficial treatment option supplementing existing wound therapies.
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Affiliation(s)
- Anke Schmidt
- Plasma Life Science, Leibniz-Institute for Plasma Science and Technology (INP Greifswald), Greifswald, Germany
| | - Sander Bekeschus
- ZIK Plasmatis, Leibniz-Institute for Plasma Science and Technology (INP Greifswald), Greifswald, Germany
| | - Kristian Wende
- ZIK Plasmatis, Leibniz-Institute for Plasma Science and Technology (INP Greifswald), Greifswald, Germany
| | - Brigitte Vollmar
- Institute for Experimental Surgery, University of Rostock, Rostock, Germany
| | - Thomas von Woedtke
- Plasma Life Science, Leibniz-Institute for Plasma Science and Technology (INP Greifswald), Greifswald, Germany.,ZIK Plasmatis, Leibniz-Institute for Plasma Science and Technology (INP Greifswald), Greifswald, Germany.,Department of Hygiene and Environmental Medicine, University Medicine Greifswald, Greifswald, Germany
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20
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Wang J, Ma XY, Feng YF, Ma ZS, Ma TC, Zhang Y, Li X, Wang L, Lei W. Magnesium Ions Promote the Biological Behaviour of Rat Calvarial Osteoblasts by Activating the PI3K/Akt Signalling Pathway. Biol Trace Elem Res 2017; 179:284-293. [PMID: 28205079 DOI: 10.1007/s12011-017-0948-8] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 01/18/2017] [Indexed: 01/07/2023]
Abstract
Magnesium has been investigated as a biodegradable metallic material. Increased concentrations of Mg2+ around magnesium implants due to biodegradation contribute to its satisfactory osteogenic capacity. However, the mechanisms underlying this process remain elusive. We propose that activation of the PI3K/Akt signalling pathway plays a role in the Mg2+-enhanced biological behaviours of osteoblasts. To test this hypothesis, 6, 10 and 18 mM Mg2+ was used to evaluate the stimulatory effect of Mg2+ on osteogenesis, which was assessed by evaluating cell adhesion, cell viability, ALP activity, extracellular matrix mineralisation and RT-PCR. The expression of p-Akt was also determined by western blotting. The results showed that 6 and 10 mM Mg2+ elicited the highest stimulatory effect on cell adhesion, cell viability and osteogenic differentiation as evidenced by cytoskeletal staining, MTT assay results, ALP activity, extracellular matrix mineralisation and expression of osteogenic differentiation-related genes. In contrast, 18 mM Mg2+ had an inhibitory effect on the behaviour of osteoblasts. Furthermore, 10 mM Mg2+ significantly increased the phosphorylation of Akt in osteoblasts. Notably, the aforementioned beneficial effects produced by 10 mM Mg2+ were abolished by blocking the PI3K/Akt signalling pathway through the addition of wortmannin. In conclusion, these results demonstrate that 6 mM and 10 mM Mg2+ can enhance the behaviour of osteoblasts, which is at least partially attributed to activation of the PI3K/Akt signalling pathway. Furthermore, a high concentration (18 mM Mg2+) showed an inhibitory effect on the biological behaviour of osteoblasts. These findings advance the understanding of cellular responses to biodegradable metallic materials and may attract greater clinical interest in magnesium.
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Affiliation(s)
- Jian Wang
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Xiang-Yu Ma
- Department of Orthopedics, 463 Hospital of PLA, Shenyang, 110042, China
| | - Ya-Fei Feng
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Zhen-Sheng Ma
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Tian-Cheng Ma
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Yang Zhang
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Xiang Li
- School of Mechanical Engineering, State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Lin Wang
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China.
| | - Wei Lei
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China.
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21
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Suryavanshi A, Khanna K, Sindhu KR, Bellare J, Srivastava R. Magnesium oxide nanoparticle-loaded polycaprolactone composite electrospun fiber scaffolds for bone-soft tissue engineering applications: in-vitro and in-vivo evaluation. ACTA ACUST UNITED AC 2017; 12:055011. [PMID: 28944766 DOI: 10.1088/1748-605x/aa792b] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The objective of the present investigation was to assess the potential of magnesium oxide nanoparticle (MgO NP)-loaded electrospun polycaprolactone (PCL) polymer composites as a bone-soft tissue engineering scaffold. MgO NPs were synthesized using a hydroxide precipitation sol-gel method and characterized using field emission gun-scanning electron microscopy/energy-dispersive x-ray spectroscopy (FEG-SEM/EDS), field emission gun-transmission electron microscopy (FEG-TEM), and x-ray diffraction (XRD) analysis. PCL and MgO-PCL nanocomposite fibers were fabricated using electrospinning with trifluoroethanol as solvent at 19 kV applied voltage and 1.9 ml h-1 flow rate as optimized process parameters, and were characterized by FEG-TEM, FEG-SEM/EDS, XRD, and differential scanning calorimetry analyses. Characterization studies of as-synthesized nanoparticles revealed diffraction peaks indexed to various crystalline planes peculiar to MgO particles with hexagonal and cubical shape, and 40-60 nm size range. Significant improvement in mechanical properties (tensile strength and elastic modulus) of nanocomposites was observed as compared to neat polymer specimens (fourfold and threefold, respectively), due to uniform dispersion of nanofillers along the polymer fiber length. There was a remarkable bioactivity shown by nanocomposite scaffolds in immersion test, as indicated by formation of surface hydroxyapatite layer by the third day of incubation. MgO-loaded electrospun PCL mats showed enhanced in-vitro biological performance with osteoblast-like MG-63 cells in terms of adhesion, proliferation, and marked differentiation marker activity owing to greater surface roughness, nanotopography, and hydrophilicity facilitating higher protein adsorption. In-vivo subcutaneous implantation study in Sprague Dawley rats revealed initial moderate inflammatory tissue response near implant site at the second week timepoint that subsided later (eighth week) with no adverse effect on vital organ functionalities as seen in histopathological analysis supported by serum biochemical and hematological parameters which did not deviate significantly from normal physiological range, indicating good biocompatibility in-vivo. Thus, MgO-PCL nanocomposite electrospun fibers have potential as an efficient scaffold material for bone-soft tissue engineering applications.
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Affiliation(s)
- Ajay Suryavanshi
- NanoBios Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, India
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22
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Synthesis and antimicrobial properties of oligomeric silsesquioxanes containing quaternized nitrogen atoms and hydroxyl groups in organic shell. Polym J 2017. [DOI: 10.15407/polymerj.39.03.188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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23
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Liu J, Yu H, Liang Q, Liu Y, Shen J, Bai Q. Preparation of polyhedral oligomeric silsesquioxane based cross-linked inorganic-organic nanohybrid as adsorbent for selective removal of acidic dyes from aqueous solution. J Colloid Interface Sci 2017; 497:402-412. [DOI: 10.1016/j.jcis.2017.03.028] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 03/02/2017] [Accepted: 03/05/2017] [Indexed: 01/22/2023]
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24
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Zhou Z, Lu ZR. Molecular imaging of the tumor microenvironment. Adv Drug Deliv Rev 2017; 113:24-48. [PMID: 27497513 DOI: 10.1016/j.addr.2016.07.012] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 07/28/2016] [Indexed: 12/19/2022]
Abstract
The tumor microenvironment plays a critical role in tumor initiation, progression, metastasis, and resistance to therapy. It is different from normal tissue in the extracellular matrix, vascular and lymphatic networks, as well as physiologic conditions. Molecular imaging of the tumor microenvironment provides a better understanding of its function in cancer biology, and thus allowing for the design of new diagnostics and therapeutics for early cancer diagnosis and treatment. The clinical translation of cancer molecular imaging is often hampered by the high cost of commercialization of targeted imaging agents as well as the limited clinical applications and small market size of some of the agents. Because many different cancer types share similar tumor microenvironment features, the ability to target these biomarkers has the potential to provide clinically translatable molecular imaging technologies for a spectrum of cancers and broad clinical applications. There has been significant progress in targeting the tumor microenvironment for cancer molecular imaging. In this review, we summarize the principles and strategies of recent advances made in molecular imaging of the tumor microenvironment, using various imaging modalities for early detection and diagnosis of cancer.
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In vitro and in vivo responses of macrophages to magnesium-doped titanium. Sci Rep 2017; 7:42707. [PMID: 28198427 PMCID: PMC5309879 DOI: 10.1038/srep42707] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 01/12/2017] [Indexed: 12/26/2022] Open
Abstract
Modulating immune response to biomaterials through changing macrophage polarization has been proven to be a promising strategy to elicit beneficial outcomes in tissue repair. The objective of this study was to evaluate the response of macrophage polarization to titanium doped with magnesium (0.1~0.35%), which was prepared through the magnesium plasma immersion ion implantation (Mg PIII) technique. The M1/M2 polarization profile of macrophages was investigated using a murine cell line RAW 264.7 in vitro and a murine air pouch model in vivo. Our results demonstrated that the Mg PIII-treated titanium induced a higher percentage of M2 macrophages and higher concentrations of the anti-inflammatory cytokines interleukin (IL)-4 and IL-10. Genes encoding two growth factors, bone morphogenetic protein 2 (BMP2) and vascular endothelial growth factor (VEGF) were up-regulated, thus indicating the ability of the M2 phenotype to promote wound healing. The nuclear factor κB (NF-κB) signalling pathway was down-regulated. In vivo the Mg PIII -treated titanium elicited a similar effect on macrophage polarization and induced thinner fibrous capsule formation and a decrease in infiltrated cells. These results indicate that Mg PIII treatment has the immunomodulatory potential to elicit the pro-healing M2-polarized macrophage phenotype, thus providing new insight into the development of immunomodulatory biomaterials.
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Accelerating Corrosion of Pure Magnesium Co-implanted with Titanium in Vivo. Sci Rep 2017; 7:41924. [PMID: 28167822 PMCID: PMC5294646 DOI: 10.1038/srep41924] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 01/05/2017] [Indexed: 12/12/2022] Open
Abstract
Magnesium is a type of reactive metal, and is susceptible to galvanic corrosion. In the present study, the impact of coexistence of Ti on the corrosion behavior of high purity Mg (HP Mg) was investigated both in vitro and in vivo. Increased corrosion rate of HP Mg was demonstrated when Mg and Ti discs were not in contact. The in vivo experiments further confirmed accelerating corrosion of HP Mg screws when they were co-implanted with Ti screws into Sprague-Dawley rats’ femur, spacing 5 and 10 mm. Micro CT scan and 3D reconstruction revealed severe corrosion morphology of HP Mg screws. The calculated volume loss was much higher for the HP Mg screw co-implanted with Ti screw as compared to that co-implanted with another Mg screw. Consequently, less new bone tissue ingrowth and lower pullout force were found in the former group. It is hypothesized that the abundant blood vessels on the periosteum act as wires to connect the Mg and Ti screws and form a galvanic-like cell, accelerating the corrosion of Mg. Therefore, a certain distance is critical to maintain the mechanical and biological property of Mg when it is co-implanted with Ti.
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Wang G, Li J, Lv K, Zhang W, Ding X, Yang G, Liu X, Jiang X. Surface thermal oxidation on titanium implants to enhance osteogenic activity and in vivo osseointegration. Sci Rep 2016; 6:31769. [PMID: 27546196 PMCID: PMC4992888 DOI: 10.1038/srep31769] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 07/27/2016] [Indexed: 02/06/2023] Open
Abstract
Thermal oxidation, which serves as a low-cost, effective and relatively simple/facile method, was used to modify a micro-structured titanium surface in ambient atmosphere at 450 °C for different time periods to improve in vitro and in vivo bioactivity. The surface morphology, crystallinity of the surface layers, chemical composition and chemical states were evaluated by field-emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). Cell behaviours including cell adhesion, attachment, proliferation, and osteogenic differentiation were observed in vitro study. The ability of the titanium surface to promote osseointegration was evaluated in an in vivo animal model. Surface thermal oxidation on titanium implants maintained the microstructure and, thus, both slightly changed the nanoscale structure of titanium and enhanced the crystallinity of the titanium surface layer. Cells cultured on the three oxidized titanium surfaces grew well and exhibited better osteogenic activity than did the control samples. The in vivo bone-implant contact also showed enhanced osseointegration after several hours of oxidization. This heat-treated titanium enhanced the osteogenic differentiation activity of rBMMSCs and improved osseointegration in vivo, suggesting that surface thermal oxidation could potentially be used in clinical applications to improve bone-implant integration.
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Affiliation(s)
- Guifang Wang
- Department of Prosthodontics, Ninth People's Hospital affiliated to Shanghai Jiao Tong University, School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China.,Oral Bioengineering Lab, Shanghai Research Institute of Stomatology, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai Key Laboratory of Stomatology, 639 Zhizaoju Road, Shanghai 200011, China
| | - Jinhua Li
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kaige Lv
- Department of Prosthodontics, Ninth People's Hospital affiliated to Shanghai Jiao Tong University, School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China.,Oral Bioengineering Lab, Shanghai Research Institute of Stomatology, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai Key Laboratory of Stomatology, 639 Zhizaoju Road, Shanghai 200011, China
| | - Wenjie Zhang
- Department of Prosthodontics, Ninth People's Hospital affiliated to Shanghai Jiao Tong University, School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China.,Oral Bioengineering Lab, Shanghai Research Institute of Stomatology, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai Key Laboratory of Stomatology, 639 Zhizaoju Road, Shanghai 200011, China
| | - Xun Ding
- Department of Prosthodontics, Ninth People's Hospital affiliated to Shanghai Jiao Tong University, School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China.,Oral Bioengineering Lab, Shanghai Research Institute of Stomatology, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai Key Laboratory of Stomatology, 639 Zhizaoju Road, Shanghai 200011, China
| | - Guangzheng Yang
- Oral Bioengineering Lab, Shanghai Research Institute of Stomatology, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai Key Laboratory of Stomatology, 639 Zhizaoju Road, Shanghai 200011, China
| | - Xuanyong Liu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Xinquan Jiang
- Department of Prosthodontics, Ninth People's Hospital affiliated to Shanghai Jiao Tong University, School of Medicine, 639 Zhizaoju Road, Shanghai 200011, China.,Oral Bioengineering Lab, Shanghai Research Institute of Stomatology, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai Key Laboratory of Stomatology, 639 Zhizaoju Road, Shanghai 200011, China
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28
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Wang T, Wan Y, Liu Z. Synergistic effects of bioactive ions and micro/nano-topography on the attachment, proliferation and differentiation of murine osteoblasts (MC3T3). JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:133. [PMID: 27412652 DOI: 10.1007/s10856-016-5747-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 07/05/2016] [Indexed: 06/06/2023]
Abstract
Surface topography and chemical nature of biological materials play an important role in regulating cell behaviors. For the intention of improving the biological performance of Ti6Al4V, the hierarchical micro/nano-topographies containing bioactive ions (Ca(2+) and Mg(2+)) were fabricated in this study. Briefly, the hierarchical micro/nano-topography was constructed on Ti6Al4V surface via sandblasting, acid etching and alkali-hydrothermal treatment. Then Na(+) existing in the nano-topography was replaced by Ca(2+) and Mg(2+) through hydrothermal reaction. The surface topographies and chemical nature of native and treated samples were characterized using laser scanning microscope, X-ray Photoelectron Spectroscopy and field emission scanning electron microscopy with the energy-dispersive spectroscopy. Surface wettability was measured with a contact angle goniometer. A series of biological tests were carried out to evaluate the synergistic effects of bioactive ions and micro/nano-topography on the attachment, proliferation and differentiation of murine osteoblastic MC3T3 cells. The results of in vitro tests indicated that Ca(2+) and Mg(2+) in the titanium alloy surface had an affirmative effect on cells attachment, proliferation and differentiation. Cells grown onto micro/nano-structured surface with Ca(2+) implantation exhibited significantly higher differentiation levels of alkaline phosphatase activity and mineralization compared to that on micro/nano-structured surface with Mg(2+) implantation. This study provided a novel method to construct a favorable biological environment between tissues and implants.
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Affiliation(s)
- Teng Wang
- Key Laboratory of High Efficiency and Clean Manufacturing, School of Mechanical Engineering, Shandong University, 17923, Jingshi Road, Jinan, 250061, Shandong, China
| | - Yi Wan
- Key Laboratory of High Efficiency and Clean Manufacturing, School of Mechanical Engineering, Shandong University, 17923, Jingshi Road, Jinan, 250061, Shandong, China.
| | - Zhanqiang Liu
- Key Laboratory of High Efficiency and Clean Manufacturing, School of Mechanical Engineering, Shandong University, 17923, Jingshi Road, Jinan, 250061, Shandong, China
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29
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Yang Q, Li L, Sun W, Zhou Z, Huang Y. Dual Stimuli-Responsive Hybrid Polymeric Nanoparticles Self-Assembled from POSS-Based Starlike Copolymer-Drug Conjugates for Efficient Intracellular Delivery of Hydrophobic Drugs. ACS APPLIED MATERIALS & INTERFACES 2016; 8:13251-61. [PMID: 27167898 DOI: 10.1021/acsami.6b02403] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
To further fine tune drug release and enhance therapeutic effects of polyhedral oligomericsilsesquioxane (POSS)-based nanomedicine, a starlike organic-inorganic conjugate was synthesized by grafting semitelechelic N-(2-hydroxypropyl) methacrylamide (HPMA) copolymers to a POSS rigid core through reductively degradable disulfide bonds. The hydrophobic docetaxel (DTX) was attached to the grafts by pH-sensitive hydrazone bonds and also encapsulated into the POSS core (SP-DTX). Thus, the final amphiphilic star-shaped conjugates could self-assemble into nanoparticles and exhibited conspicuous drug-loading capacity (20.1 wt %) based on the covalently conjugated accompanied by physically encapsulated DTX. The stimuli-responsive DTX release under acidic lysosomal and reducing cytoplasmic environments was verified, leading to enhanced cytotoxicity against PC-3 human prostate carcinoma cells. To evaluate the in vivo therapeutic effects of the DTX-loaded nanovehicles objectively, a stroma-rich, prostate xenograft tumor model was generated. SP-DTX displayed uniform tumor distribution and suppressed tumor growth to a more pronounced level (tumor inhibition of 78.9%) than nonredox-sensitive SP-DTX-A (67.4%), SP-DTX-C contained DTX only in the core (65.5%) or linear P-DTX (60.7%) through enhanced depletion of cancer-associated fibroblasts and induction of apoptosis. The hybrid POSS-based polymeric nanoparticles offer an efficient approach to transport hydrophobic drugs for cancer therapy.
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Affiliation(s)
- Qingqing Yang
- Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education, West China School of Pharmacy, Sichuan University . No. 17, Block 3, Southern Renmin Road, Chengdu 610041, P.R. China
| | - Lian Li
- Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education, West China School of Pharmacy, Sichuan University . No. 17, Block 3, Southern Renmin Road, Chengdu 610041, P.R. China
| | - Wei Sun
- Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education, West China School of Pharmacy, Sichuan University . No. 17, Block 3, Southern Renmin Road, Chengdu 610041, P.R. China
| | - Zhou Zhou
- Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education, West China School of Pharmacy, Sichuan University . No. 17, Block 3, Southern Renmin Road, Chengdu 610041, P.R. China
| | - Yuan Huang
- Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education, West China School of Pharmacy, Sichuan University . No. 17, Block 3, Southern Renmin Road, Chengdu 610041, P.R. China
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30
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Tailoring the dendrimer core for efficient gene delivery. Acta Biomater 2016; 35:1-11. [PMID: 26923528 DOI: 10.1016/j.actbio.2016.02.031] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 01/16/2016] [Accepted: 02/22/2016] [Indexed: 01/01/2023]
Abstract
Dendrimers have been widely used as non-viral gene vectors due to well-defined chemical structures, high density of cationic charges and ease of surface modification. Although a large number of studies have reported the important roles of dendrimer architecture, component, generation and surface functionality in gene delivery, the effect of dendrimer core on this issue still remains unclear. Recent literatures suggest that a slight alternation in dendrimer core has a profound effect in the transfection efficacy and biocompatibility. In this review, we will discuss the transfection mechanism of dendrimers with different types of cores in respect of flexibility, hydrophobicity and functionality. We hope to open a possibility of designing efficient dendrimers for gene delivery by choosing a proper dendrimer core. STATEMENT OF SIGNIFICANCE As a branch of researches on dendrimers and dendritic polymers, the design of biocompatible and high efficient polymeric gene carriers has attracted increasing attentions during these years. Although the effect of dendrimer generation, species, architecture and surface functionality on gene delivery have been widely reported, the effect of dendrimer core on this issue still remains unclear. Recent literatures suggest that a minor variation on the dendrimer core has a profound effect in the transfection efficacy and biocompatibility. This critical review summarized the dendrimers with different types of cores and discussed the transfection mechanism with particular focus on the flexibility, hydrophobicity, and functionality. It is hoped to provide a new insight to design efficient and safe dendrimer-based gene vectors by choosing a proper core. To the best of our knowledge, this is the first review on the effect of dendrimer core on gene delivery. The findings obtained in this filed are of central importance in the design of efficient polymeric gene vectors. This article will appeal a wide readership such as physical chemist, dendrimer chemist, biological chemist, pharmaceutical scientist, and biomaterial researchers. We hope that this review article can be published by Acta Biomaterialia, a top journal that publishes important reviews in the field of biomaterials science.
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31
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Zhou Z, Han Z, Lu ZR. A targeted nanoglobular contrast agent from host-guest self-assembly for MR cancer molecular imaging. Biomaterials 2016; 85:168-79. [PMID: 26874280 PMCID: PMC5412079 DOI: 10.1016/j.biomaterials.2016.02.002] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 02/01/2016] [Accepted: 02/01/2016] [Indexed: 12/21/2022]
Abstract
The clinical application of nanoparticular Gd(III) based contrast agents for tumor molecular MRI has been hindered by safety concerns associated with prolonged tissue retention, although they can produce strong tumor enhancement. In this study, a targeted well-defined cyclodextrin-based nanoglobular contrast agent was developed through self-assembly driven by host-guest interactions for safe and effective cancer molecular MRI. Multiple β-cyclodextrins attached POSS (polyhedral oligomeric silsesquioxane) nanoglobule was used as host molecule. Adamantane-modified macrocyclic Gd(III) contrast agent, cRGD (cyclic RGDfK peptide) targeting ligand and fluorescent probe was used as guest molecules. The targeted host-guest nanoglobular contrast agent cRGD-POSS-βCD-(DOTA-Gd) specifically bond to αvβ3 integrin in malignant 4T1 breast tumor and provided greater contrast enhancement than the corresponding non-targeted agent. The agent also provided significant fluorescence signal in tumor tissue. The histological analysis of the tumor tissue confirmed its specific and effective targeting to αvβ3 integrin. The targeted imaging agent has a potential for specific cancer molecular MR and fluorescent imaging.
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Affiliation(s)
- Zhuxian Zhou
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA; Center for Bionanoengineering and State Key Laboratory of Chemical Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Zhen Han
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Zheng-Rong Lu
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA.
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32
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Kim HS, Kim YJ, Jang JH, Park JW. Surface Engineering of Nanostructured Titanium Implants with Bioactive Ions. J Dent Res 2016; 95:558-65. [DOI: 10.1177/0022034516638026] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Surface nanofeatures and bioactive ion chemical modification are centrally important in current titanium (Ti) oral implants for enhancing osseointegration. However, it is unclear whether the addition of bioactive ions definitively enhances the osteogenic capacity of a nanostructured Ti implant. We systematically investigated the osteogenesis process of human multipotent adipose stem cells triggered by bioactive ions in the nanostructured Ti implant surface. Here, we report that bioactive ion surface modification (calcium [Ca] or strontium [Sr]) and resultant ion release significantly increase osteogenic activity of the nanofeatured Ti surface. We for the first time demonstrate that ion modification actively induces focal adhesion development and expression of critical adhesion–related genes (vinculin, talin, and RHOA) of human multipotent adipose stem cells, resulting in enhanced osteogenic differentiation on the nanofeatured Ti surface. It is also suggested that fibronectin adsorption may have only a weak effect on early cellular events of mesenchymal stem cells (MSCs) at least in the case of the nanostructured Ti implant surface incorporating Sr. Moreover, results indicate that Sr overrides the effect of Ca and other important surface factors (i.e., surface area and wettability) in the osteogenesis function of various MSCs (derived from human adipose, bone marrow, and murine bone marrow). In addition, surface engineering of nanostructured Ti implants using Sr ions is expected to exert additional beneficial effects on implant bone healing through the proper balancing of the allocation of MSCs between adipogenesis and osteogenesis. This work provides insight into the future surface design of Ti dental implants using surface bioactive ion chemistry and nanotopography.
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Affiliation(s)
- H.-S. Kim
- Department of Periodontology, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
| | - Y.-J. Kim
- Department of Periodontology, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
| | - J.-H. Jang
- Department of Periodontology, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
| | - J.-W. Park
- Department of Periodontology, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
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Cai X, Jin R, Wang J, Yue D, Jiang Q, Wu Y, Gu Z. Bioreducible Fluorinated Peptide Dendrimers Capable of Circumventing Various Physiological Barriers for Highly Efficient and Safe Gene Delivery. ACS APPLIED MATERIALS & INTERFACES 2016; 8:5821-5832. [PMID: 26887907 DOI: 10.1021/acsami.5b11545] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Polymeric vectors have shown great promise in the development of safe and efficient gene delivery systems; however, only a few have been developed in clinical settings due to poor transport across multiple physiological barriers. To address this issue and promote clinical translocation of polymeric vectors, a new type of polymeric vector, bioreducible fluorinated peptide dendrimers (BFPDs), was designed and synthesized by reversible cross-linking of fluorinated low generation peptide dendrimers. Through masterly integration all of the features of reversible cross-linking, fluorination, and polyhedral oligomeric silsesquioxane (POSS) core-based peptide dendrimers, this novel vector exhibited lots of unique features, including (i) inactive surface to resist protein interactions; (ii) virus-mimicking surface topography to augment cellular uptake; (iii) fluorination-mediated efficient cellular uptake, endosome escape, cytoplasm trafficking, and nuclear entry, and (iv) disulfide-cleavage-mediated polyplex disassembly and DNA release that allows efficient DNA transcription. Noteworthy, all of these features are functionally important and can synergistically facilitate DNA transport from solution to the nucleus. As a consequences, BFPDs showed excellent gene transfection efficiency in several cell lines (∼95% in HEK293 cells) and superior biocompatibility compared with polyethylenimine (PEI). Meanwhile BFPDs provided excellent serum resistance in gene delivery. More importantly, BFPDs offer considerable in vivo gene transfection efficiency (in muscular tissues and in HepG2 tumor xenografts), which was approximately 77-fold higher than that of PEI in luciferase activity. These results suggest bioreducible fluorinated peptide dendrimers are a new class of highly efficient and safe gene delivery vectors and should be used in clinical settings.
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Affiliation(s)
- Xiaojun Cai
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
| | - Rongrong Jin
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
| | - Jiali Wang
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
| | - Dong Yue
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
| | - Qian Jiang
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
| | - Yao Wu
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
| | - Zhongwei Gu
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
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Strauch H, Engelmann J, Scheffler K, Mayer HA. A simple approach to a new T8-POSS based MRI contrast agent. Dalton Trans 2016; 45:15104-15113. [DOI: 10.1039/c6dt02365g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A simple synthesis of a new nanoglobular T8-silsesquioxane based contrast agent for the application in MRI is reported.
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Affiliation(s)
- Helene Strauch
- Institut für Anorganische Chemie
- Eberhard Karls Universität Tübingen
- 72076 Tübingen
- Germany
| | - Jörn Engelmann
- Hochfeld-Magnetresonanz-Zentrum
- Max-Planck-Institut für Biologische Kybernetik
- 72076 Tübingen
- Germany
| | - Klaus Scheffler
- Hochfeld-Magnetresonanz-Zentrum
- Max-Planck-Institut für Biologische Kybernetik
- 72076 Tübingen
- Germany
- Department of Biomedical Magnetic Resonance
| | - Hermann A. Mayer
- Institut für Anorganische Chemie
- Eberhard Karls Universität Tübingen
- 72076 Tübingen
- Germany
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35
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Huang W, Wu P, Feng P, Yang Y, Guo W, Lai D, Zhou Z, Liu X, Shuai C. MgO whiskers reinforced poly(vinylidene fluoride) scaffolds. RSC Adv 2016. [DOI: 10.1039/c6ra22386a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
In this study, poly(vinylidene fluoride) (PVDF) scaffolds with MgO whiskers were prepared through selective laser sintering, and their properties were studied in terms of mechanical and biological properties.
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Affiliation(s)
- Wei Huang
- State Key Laboratory of High Performance Complex Manufacturing
- Central South University
- Changsha 410083
- China
| | - Ping Wu
- College of Chemistry
- Xiangtan University
- Xiangtan
- China
| | - Pei Feng
- State Key Laboratory of High Performance Complex Manufacturing
- Central South University
- Changsha 410083
- China
| | - Youwen Yang
- State Key Laboratory of High Performance Complex Manufacturing
- Central South University
- Changsha 410083
- China
- State Key Laboratory of Solidification Processing
| | - Wang Guo
- State Key Laboratory of High Performance Complex Manufacturing
- Central South University
- Changsha 410083
- China
| | - Duan Lai
- Hunan Farsoon High-Technology Co. Ltd
- Changsha 410205
- China
| | - Zhiyang Zhou
- Hunan Farsoon High-Technology Co. Ltd
- Changsha 410205
- China
| | - Xiaohe Liu
- Department of Inorganic Material
- Central South University
- Changsha
- China
| | - Cijun Shuai
- State Key Laboratory of High Performance Complex Manufacturing
- Central South University
- Changsha 410083
- China
- State Key Laboratory for Powder Metallurgy
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36
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Zhou Z, Murdoch WJ, Shen Y. A linear polyethylenimine (LPEI) drug conjugate with reversible charge to overcome multidrug resistance in cancer cells. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.08.061] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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37
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Zhou Z, Murdoch WJ, Shen Y. Synthesis of an esterase-sensitive degradable polyester as facile drug carrier for cancer therapy. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27798] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zhuxian Zhou
- Department of Chemical and Biological Engineering, Center for Bionanoengineering and State Key Laboratory for Chemical Engineering; Zhejiang University; Hangzhou 310027 China
- Department of Chemical and Petroleum Engineering; University of Wyoming; Laramie Wyoming 82071
| | - William J. Murdoch
- Department of Animal Science; University of Wyoming; Laramie Wyoming 82071
| | - Youqing Shen
- Department of Chemical and Biological Engineering, Center for Bionanoengineering and State Key Laboratory for Chemical Engineering; Zhejiang University; Hangzhou 310027 China
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38
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Sun D, Maeno H, Gujrati M, Schur R, Maeda A, Maeda T, Palczewski K, Lu ZR. Self-Assembly of a Multifunctional Lipid With Core-Shell Dendrimer DNA Nanoparticles Enhanced Efficient Gene Delivery at Low Charge Ratios into RPE Cells. Macromol Biosci 2015; 15:1663-72. [PMID: 26271011 DOI: 10.1002/mabi.201500192] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Revised: 07/16/2015] [Indexed: 11/09/2022]
Abstract
Development of safe and effective gene delivery systems is essential in treating ocular genetic disorders. A hybrid nonviral system composed of a multifunctional lipid ECO and a G4 nanoglobule was designed for efficient gene delivery into RPE cells at low charge ratios. This system formed stable DNA nanoparticles at low N/P ratios, exhibited low cytotoxicity, and induced higher GFP expression in ARPE-19 cells at N/P = 6. The hybrid nanoparticles mediated significant reporter gene GFP expression ex-vivo in the retina from wild type C57 mice and in vivo in BALB/c mice. These hybrid nanoparticles are promising for in vitro and in vivo gene delivery at low charge ratios.
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Affiliation(s)
- Da Sun
- Department of Biomedical Engineering, School of Engineering, Case Western Reserve University, Cleveland, Ohio , 44140, USA
| | - Hiroshi Maeno
- Department of Ophthalmology, School of Medicine, Case Western Reserve University, Cleveland, Ohio, 44140, USA
| | - Maneesh Gujrati
- Department of Biomedical Engineering, School of Engineering, Case Western Reserve University, Cleveland, Ohio , 44140, USA
| | - Rebecca Schur
- Department of Biomedical Engineering, School of Engineering, Case Western Reserve University, Cleveland, Ohio , 44140, USA
| | - Akiko Maeda
- Department of Ophthalmology, School of Medicine, Case Western Reserve University, Cleveland, Ohio, 44140, USA.,Department of Pharmacology, Cleveland Center for Membrane and Structural Biology, School of Medicine, Case Western Reserve University, Cleveland, Ohio, 44140, USA
| | - Tadao Maeda
- Department of Ophthalmology, School of Medicine, Case Western Reserve University, Cleveland, Ohio, 44140, USA
| | - Krzysztof Palczewski
- Department of Pharmacology, Cleveland Center for Membrane and Structural Biology, School of Medicine, Case Western Reserve University, Cleveland, Ohio, 44140, USA
| | - Zheng-Rong Lu
- Department of Biomedical Engineering, School of Engineering, Case Western Reserve University, Cleveland, Ohio , 44140, USA.
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Zhou Z, Qutaish M, Han Z, Schur RM, Liu Y, Wilson DL, Lu ZR. MRI detection of breast cancer micrometastases with a fibronectin-targeting contrast agent. Nat Commun 2015; 6:7984. [PMID: 26264658 PMCID: PMC4557274 DOI: 10.1038/ncomms8984] [Citation(s) in RCA: 185] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2015] [Accepted: 07/03/2015] [Indexed: 12/12/2022] Open
Abstract
Metastasis is the primary cause of death in breast cancer patients. Early detection of high-risk breast cancer, including micrometastasis, is critical in tailoring appropriate and effective interventional therapies. Increased fibronectin expression, a hallmark of epithelial-to-mesenchymal transition, is associated with high-risk breast cancer and metastasis. We have previously developed a penta-peptide CREKA (Cys-Arg-Glu-Lys-Ala)-targeted gadolinium-based magnetic resonance imaging (MRI) contrast agent, CREKA-Tris(Gd-DOTA)3 (Gd-DOTA (4,7,10-tris(carboxymethyl)-1,4,7,10-tetraazacyclododecyl gadolinium), which binds to fibrin-fibronectin complexes that are abundant in the tumour microenvironment of fast-growing breast cancer. Here we assess the capability of CREKA-Tris(Gd-DOTA)3 to detect micrometastasis with MRI in co-registration with high-resolution fluorescence cryo-imaging in female mice bearing metastatic 4T1 breast tumours. We find that CREKA-Tris(Gd-DOTA)3 provides robust contrast enhancement in the metastatic tumours and enables the detection of micrometastases of size <0.5 mm, extending the detection limit of the current clinical imaging modalities. These results demonstrate that molecular MRI with CREKA-Tris(Gd-DOTA)3 may facilitate early detection of high-risk breast cancer and micrometastasis in the clinic.
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Affiliation(s)
- Zhuxian Zhou
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, USA
- Center for Bionanoengineering and State Key Laboratory of Chemical Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027 China
| | - Mohammed Qutaish
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, USA
| | - Zheng Han
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, USA
| | - Rebecca M. Schur
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, USA
| | - Yiqiao Liu
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, USA
| | - David L. Wilson
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, USA
- Department of Radiology, Case Western Reserve University, Cleveland, Ohio 44106, USA
| | - Zheng-Rong Lu
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio 44106, USA
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Ye Z, Zhou Z, Ayat N, Wu X, Jin E, Shi X, Lu ZR. A neutral polydisulfide containing Gd(III) DOTA monoamide as a redox-sensitive biodegradable macromolecular MRI contrast agent. CONTRAST MEDIA & MOLECULAR IMAGING 2015. [PMID: 26218648 DOI: 10.1002/cmmi.1655] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This work aims to develop safe and effective gadolinium (III)-based biodegradable macromolecular MRI contrast agents for blood pool and cancer imaging. A neutral polydisulfide containing macrocyclic Gd-DOTA monoamide (GOLS) was synthesized and characterized. In addition to studying the in vitro degradation of GOLS, its kinetic stability was also investigated in an in vivo model. The efficacy of GOLS for contrast-enhanced MRI was examined with female BALB/c mice bearing 4T1 breast cancer xenografts. The pharmacokinetics, biodistribution, and metabolism of GOLS were also determined in mice. GOLS has an apparent molecular weight of 23.0 kDa with T1 relaxivities of 7.20 mM(-1) s(-1) per Gd at 1.5 T, and 6.62 mM(-1) s(-1) at 7.0 T. GOLS had high kinetic inertness against transmetallation with Zn(2+) ions, and its polymer backbone was readily cleaved by L-cysteine. The agent showed improved efficacy for blood pool and tumor MR imaging. The structural effect on biodistribution and in vivo chelation stability was assessed by comparing GOLS with Gd(HP-DO3A), a negatively charged polydisulfide containing Gd-DOTA monoamide GODC, and a polydisulfide containing Gd-DTPA-bisamide (GDCC). GOLS showed high in vivo chelation stability and minimal tissue deposition of gadolinium. The biodegradable macromolecular contrast agent GOLS is a promising polymeric contrast agent for clinical MR cardiovascular imaging and cancer imaging.
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Affiliation(s)
- Zhen Ye
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA.,Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT, USA
| | - Zhuxian Zhou
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Nadia Ayat
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Xueming Wu
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Erlei Jin
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Xiaoyue Shi
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Zheng-Rong Lu
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
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Mandracci P, Mussano F, Ceruti P, Pirri CF, Carossa S. Reduction of bacterial adhesion on dental composite resins by silicon-oxygen thin film coatings. ACTA ACUST UNITED AC 2015; 10:015017. [PMID: 25634298 DOI: 10.1088/1748-6041/10/1/015017] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Adhesion of bacteria on dental materials can be reduced by modifying the physical and chemical characteristics of their surfaces, either through the application of specific surface treatments or by the deposition of thin film coatings. Since this approach does not rely on the use of drugs or antimicrobial agents embedded in the materials, its duration is not limited by their possible depletion. Moreover it avoids the risks related to possible cytotoxic effects elicited by antibacterial substances released from the surface and diffused in the surrounding tissues. In this work, the adhesion of Streptococcus mutans and Streptococcus mitis was studied on four composite resins, commonly used for manufacturing dental prostheses. The surfaces of dental materials were modified through the deposition of a-SiO(x) thin films by plasma enhanced chemical vapor deposition. The chemical bonding structure of the coatings was analyzed by Fourier-transform infrared spectroscopy. The morphology of the dental materials before and after the coating deposition was assessed by means of optical microscopy and high-resolution mechanical profilometry, while their wettability was investigated by contact angle measurements. The sample roughness was not altered after coating deposition, while a noticeable increase of wettability was detected for all the samples. Also, the adhesion of S. mitis decreased in a statistically significant way on the coated samples, when compared to the uncoated ones, which did not occur for S. mutans. Within the limitations of this study, a-SiO(x) coatings may affect the adhesion of bacteria such as S. mitis, possibly by changing the wettability of the composite resins investigated.
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Affiliation(s)
- Pietro Mandracci
- Politecnico di Torino, Department of Applied Science and Technology - Materials and Microsystems Laboratory (ChiLab), corso Duca degli Abruzzi 24, I-10129, Torino, Italy
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Zhou Z, Tang J, Sun Q, Murdoch WJ, Shen Y. A multifunctional PEG–PLL drug conjugate forming redox-responsive nanoparticles for intracellular drug delivery. J Mater Chem B 2015; 3:7594-7603. [DOI: 10.1039/c5tb01027f] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Tumor-targeting camptothecin (CPT)-conjugated nanoparticles with high stability and GSH-triggered drug release were developed for cancer targeting drug delivery.
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Affiliation(s)
- Zhuxian Zhou
- Center for Bionanoengineering and State Key Laboratory for Chemical Engineering
- Department of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Jianbin Tang
- Center for Bionanoengineering and State Key Laboratory for Chemical Engineering
- Department of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Qihang Sun
- Department of Chemical and Petroleum Engineering
- University of Wyoming
- Laramie
- USA
| | | | - Youqing Shen
- Center for Bionanoengineering and State Key Laboratory for Chemical Engineering
- Department of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
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43
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Cao F, Huang T, Wang Y, Liu F, Chen L, Ling J, Sun J. Novel lanthanide–polymer complexes for dye-free dual modal probes for MRI and fluorescence imaging. Polym Chem 2015. [DOI: 10.1039/c5py01011j] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
High-resolution imaging is a powerful technique in theranostics and staging of tumors.
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Affiliation(s)
- Fangyi Cao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Tongcun Huang
- Department of Radiology
- Sir Run Run Shaw Hospital
- School of Medicine
- Zhejiang University
- Hangzhou 310016
| | - Yifei Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Fei Liu
- Department of Radiology
- Sir Run Run Shaw Hospital
- School of Medicine
- Zhejiang University
- Hangzhou 310016
| | - Lumin Chen
- Department of Radiology
- Sir Run Run Shaw Hospital
- School of Medicine
- Zhejiang University
- Hangzhou 310016
| | - Jun Ling
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Jihong Sun
- Department of Radiology
- Sir Run Run Shaw Hospital
- School of Medicine
- Zhejiang University
- Hangzhou 310016
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