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Liu D, Zhang H, Dong X, Sang L, Qi M. Effect of viscoelastic properties of cellulose nanocrystal/collagen hydrogels on chondrocyte behaviors. Front Bioeng Biotechnol 2022; 10:959409. [PMID: 36032700 PMCID: PMC9403537 DOI: 10.3389/fbioe.2022.959409] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 07/11/2022] [Indexed: 11/13/2022] Open
Abstract
Cartilage tissue engineering technology provides a solution for treating osteoarthritis. Based on the viscoelastic nature of articular cartilage, many viscoelastic hydrogel scaffolds have been developed for investigating the effects on chondrocyte behaviors. However, cellulose nanocrystal/collagen (CNC/COL) hydrogels have not been used as a viscoelastic microenvironment to study chondrocyte growth. Here, we prepared CNC/COL hydrogels with tunable viscoelastic properties and investigated their influences on chondrocyte behaviors. The results showed that CNC and COL within the hydrogels are bonded by hydrogen bonds. The hydrogels had a microporous structure, and the viscoelastic properties were enhanced by increasing the concentration of CNC. Moreover, enhancing the hydrogel viscoelastic properties, including stress relaxation, creep, storage modulus, and loss modulus, promoted the cell shape change, proliferation, and matrix deposition and reduced the IL-1β level. Using a principal component analysis (PCA), stress relaxation was assessed to have the strongest correlation with chondrocytes behaviors, with an authority weight value of 62.547%. More importantly, FAK and YAP were involved in the chondrocytes’ response to the rapid relaxing hydrogel by immunofluorescence staining.
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Affiliation(s)
- Donglei Liu
- School of Basic Medicine, Binzhou Medical University, Yantai, China
- School of Materials Science and Engineering, Dalian University of Technology, Dalian, China
| | - Hao Zhang
- School of Materials Science and Engineering, Dalian University of Technology, Dalian, China
- Department of Orthopedics, Central Hospital of Dalian University of Technology, Dalian, China
- Changchun SinoBiomaterials Co., Ltd., Changchun, China
- *Correspondence: Hao Zhang, ; Xufeng Dong,
| | - Xufeng Dong
- School of Materials Science and Engineering, Dalian University of Technology, Dalian, China
- *Correspondence: Hao Zhang, ; Xufeng Dong,
| | - Lin Sang
- School of Automotive Engineering, Dalian University of Technology, Dalian, China
| | - Min Qi
- School of Materials Science and Engineering, Dalian University of Technology, Dalian, China
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Han C, Tan D, Wang Y, Yu Z, Sun X, Wang D. Selective extraction of synthetic cathinones new psychoactive substances from wastewater, urine and cocktail using dummy molecularly imprinted polymers. J Pharm Biomed Anal 2022; 215:114765. [PMID: 35447493 DOI: 10.1016/j.jpba.2022.114765] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 04/07/2022] [Accepted: 04/09/2022] [Indexed: 11/28/2022]
Abstract
Dummy molecularly imprinted polymers (DMIPs) for selective extraction of five common synthetic cathinones (SCs) were prepared by bulk polymerization. DMIPs materials possessed narrow diameter distribution (30-60 µm) and large specific surface area (329.6 m2 g-1). Imprinting factors for cathinone, methcathinone, mephedrone, methylone and ethylone were 1.11-1.82. DMIPs could also quickly adsorb SCs from aqueous solutions within 5 min. Therefore, the materials were used as solid-phase extraction (SPE) sorbents to selectively extract five SCs in complex samples. An accurate and sensitive analytical method based on DMIPs-SPE combined with HPLC-MS/MS was established. Under optimal conditions, the established method showed low limits of detection (0.002-0.1 ng mL-1), satisfactory recoveries (84.1-97.7%) and good repeatability (relative standard deviation (RSD) below 9%). The method was successfully verified using wastewater, urine and cocktail samples. Recoveries of SCs at three spiking levels were in the range of 75.1-98.6%, with RSD values below 7.0%. Compared with commercial sorbents, DMIPs showed better clean-up ability with matrix effect values of -24.1%-8.3% for all SCs in wastewater, urine and cocktail samples. Therefore, the developed DMIPs-SPE-HPLC-MS/MS strategy could be used as a specific and cost-effective method for sensitive determination of SCs in complex samples.
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Affiliation(s)
- Chang Han
- College of Environmental Science and Engineering, Dalian Maritime University, No. 1 Linghai Road, Dalian 116026, China
| | - Dongqin Tan
- College of Environmental Science and Engineering, Dalian Maritime University, No. 1 Linghai Road, Dalian 116026, China.
| | - Yue Wang
- College of Environmental Science and Engineering, Dalian Maritime University, No. 1 Linghai Road, Dalian 116026, China
| | - Zhonglin Yu
- College of Environmental Science and Engineering, Dalian Maritime University, No. 1 Linghai Road, Dalian 116026, China
| | - Xiaoli Sun
- Department of Chemistry, Lishui University, Lishui 32300, China
| | - Degao Wang
- College of Environmental Science and Engineering, Dalian Maritime University, No. 1 Linghai Road, Dalian 116026, China.
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Zhang X, Ou X, Zhang J, Chen Z, Liu C, Li H, Li X, Sun Y, Chen Z, Zhu J, Lu S, Zhang P. Smart ion imprinted polymer for selective adsorption of Ru(Ⅲ) and simultaneously waste sample being transformed as a catalyst. JOURNAL OF HAZARDOUS MATERIALS 2021; 417:126072. [PMID: 34229408 DOI: 10.1016/j.jhazmat.2021.126072] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 03/31/2021] [Accepted: 05/05/2021] [Indexed: 06/13/2023]
Abstract
In this work, a temperature-sensitive block polymer PDEA-b-P(DEA-co-AM) was synthesized and then introduced into the preparation of a smart Ru(Ⅲ) imprinted polymer (Ru-IIP) to selectively adsorption Ru(Ⅲ) first. Then the waste Ru-IIP was converted into a catalyst in-situ for recycle. The structure and morphology of the prepared polymer were characterized by Fourier transform infrared spectrometer, Scanning electron microscope, BET surface area and Thermogravimetric analysis. The adsorption properties of the synthesized smart material were investigated in terms of adsorption pH, adsorption kinetics and adsorption isotherm. Results documented that the optimal adsorption temperature and pH were 35 °C and 1.5 respectively, the maximum adsorption capacity was 0.153 mmol/g, and the adsorption processes of Ru-IIP were more suitable to be expressed by pseudo-first-order kinetic and Langmuir model. The selectivity studied in different binary mixed solutions showed that Ru-IIP has good selectivity, and reusability results showed that Ru-IIP still maintains a good adsorption effect after 8 cycles. In addition, the waste Ru-IIP, a Ru(Ⅲ) remained waste sample was employed as the catalyst for the synthesis of imines, and result showed the mass of adsorbent would reduce after the completion of catalysis, which could not only catalyze the reaction but also reduce pollution.
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Affiliation(s)
- Xiaoyan Zhang
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, Gansu, China; School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China; Gansu Yinguang Chemical Industry Group Co. Ltd, Baiyin 730900, Gansu, China; Baiyin Research Institute of Novel Materials of Lanzhou University of Technology, Baiyin 730900, Gansu, China
| | - Xiaojian Ou
- State Key Laboratory of Nickel and Cobalt Resources Comprehensive Utilization, Jinchang 737100, Gansu, China
| | - Jun Zhang
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, Gansu, China; School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China
| | - Zhengcan Chen
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, Gansu, China; School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China
| | - Chunli Liu
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, Gansu, China; School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China
| | - Hui Li
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, Gansu, China; School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China
| | - Xiaoming Li
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, Gansu, China; School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China
| | - Yuan Sun
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China
| | - Zhenbin Chen
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, Gansu, China; School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China.
| | - Jinian Zhu
- State Key Laboratory of Nickel and Cobalt Resources Comprehensive Utilization, Jinchang 737100, Gansu, China
| | - Sujun Lu
- State Key Laboratory of Nickel and Cobalt Resources Comprehensive Utilization, Jinchang 737100, Gansu, China
| | - Peng Zhang
- State Key Laboratory of Nickel and Cobalt Resources Comprehensive Utilization, Jinchang 737100, Gansu, China
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Nicholls IA, Golker K, Olsson GD, Suriyanarayanan S, Wiklander JG. The Use of Computational Methods for the Development of Molecularly Imprinted Polymers. Polymers (Basel) 2021; 13:2841. [PMID: 34502881 PMCID: PMC8434026 DOI: 10.3390/polym13172841] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/16/2021] [Accepted: 08/19/2021] [Indexed: 12/29/2022] Open
Abstract
Recent years have witnessed a dramatic increase in the use of theoretical and computational approaches in the study and development of molecular imprinting systems. These tools are being used to either improve understanding of the mechanisms underlying the function of molecular imprinting systems or for the design of new systems. Here, we present an overview of the literature describing the application of theoretical and computational techniques to the different stages of the molecular imprinting process (pre-polymerization mixture, polymerization process and ligand-molecularly imprinted polymer rebinding), along with an analysis of trends within and the current status of this aspect of the molecular imprinting field.
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Affiliation(s)
- Ian A. Nicholls
- Bioorganic & Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry & Biomedical Sciences, Linnaeus University, SE-391 82 Kalmar, Sweden; (K.G.); (G.D.O.); (S.S.); (J.G.W.)
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