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Abstract
STUDY DESIGN Basic research. OBJECTIVE To prepared 3 DNPM/chitosan hybrid hydrogels and chose the best DNPM/chitosan hybrid hydrogel for NP tissue engineering. METHODS Three DNPM/chitosan hybrid hydrogels were fabricated by changing the ratio of the decellularized NP matrix to chitosan and crosslinking with genipin. NP stem cells (NPSCs) were cultured on the hybrid hydrogels and their proliferation, morphology, and gene expression were evaluated. Finally, an in vivo experiment was performed to evaluate the immune response to the hydrogels. RESULTS The adhered NPSCs proliferated well on the hybrid hydrogel. The gene expression of NP-related collagen type II, aggrecan, and Sox-9 from NPSCs cultured on DNPM/chitosan hybrid hydrogel-1 was greater than from cells cultured on DNPM/chitosan hybrid hydrogel-2 and DNPM/chitosan hybrid hydrogel-3. Few inflammatory cells were observed during the in vivo experiment with DNPM/chitosan hybrid hydrogel-1. CONCLUSIONS DNPM/chitosan hybrid hydrogel-1 is a potential candidate scaffold for NP tissue engineering.
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Affiliation(s)
- Yu Zhang
- Cheeloo College of Medicine, Shandong University, China
- The first Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, China
- Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institution, China
- Department of Spine Surgery, Yijishan Hospital of Wannan Medical College, China
| | - Yifeng Li
- Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institution, China
- Department of Spine Surgery, Yijishan Hospital of Wannan Medical College, China
| | - Chen Liu
- Key Laboratory of Non-coding RNA Transformation Research of Anhui Higher Education Institution, China
- Department of Spine Surgery, Yijishan Hospital of Wannan Medical College, China
| | - Xifu Shang
- Cheeloo College of Medicine, Shandong University, China
- The first Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, China
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Pacheco KML, Torres BBM, Sanfelice RC, da Costa MM, Assis L, Marques RB, Filho ALMM, Tim CR, Pavinatto A. Chitosan and chitosan/turmeric-based membranes for wound healing: Production, characterization and application. Int J Biol Macromol 2023; 253:127425. [PMID: 37864933 DOI: 10.1016/j.ijbiomac.2023.127425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 09/19/2023] [Accepted: 10/11/2023] [Indexed: 10/23/2023]
Abstract
In the present study, chitosan and chitosan/turmeric-based membranes were produced, characterized and applied in in vivo experiments showing the applicability for skin wound repair. Chitosan 1 % (w/v), chitosan + glycerol 30 % (w/w) and chitosan + glycerol 30 % + turmeric 1.5 % (w/w) membranes were produced through the casting technique. Self-sustainable, homogeneous, and flexible membranes were obtained from all materials tested. The FTIR spectra showed the main vibrational bands for materials used in the chemical groups. The membranes containing glycerol are more flexible than those formed with pure chitosan. Membranes formed with glycerol and glycerol/turmeric are more hydrophilic compared to the membranes formed by pure chitosan. The in vivo results showed that the group who received the chi/gly/turmeric membrane had a statistically greater reduction in the injured area, as well as a better healing process in the histological analysis compared to the other experimental groups. The material developed here is from a natural source, low cost and easy to apply and can accelerate the process of repairing skin lesions.
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Affiliation(s)
- Karoline M L Pacheco
- Scientific and Technological Institute, Brazil University, 08230-030 São Paulo, SP, Brazil
| | - Bruno B M Torres
- Sao Carlos Institute of Physics, University of São Paulo, 13566-970 São Carlos, SP, Brazil
| | - Rafaela C Sanfelice
- Science and Technology Institute, Federal University of Alfenas, 37715-400 Poços de Caldas, MG, Brazil
| | - Mardoqueu M da Costa
- Scientific and Technological Institute, Brazil University, 08230-030 São Paulo, SP, Brazil
| | - Lívia Assis
- Scientific and Technological Institute, Brazil University, 08230-030 São Paulo, SP, Brazil
| | - Rosemarie Brandim Marques
- Biotechnology and Biodiversity Research Center, State University of Piaui, 64002-150 Teresina, PI, Brazil
| | | | - Carla R Tim
- Scientific and Technological Institute, Brazil University, 08230-030 São Paulo, SP, Brazil
| | - Adriana Pavinatto
- Scientific and Technological Institute, Brazil University, 08230-030 São Paulo, SP, Brazil.
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3
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Sun W, Wang C, Tian C, Li X, Hu X, Liu S. Nanotechnology for brain tumor imaging and therapy based on π-conjugated materials: state-of-the-art advances and prospects. Front Chem 2023; 11:1301496. [PMID: 38025074 PMCID: PMC10663370 DOI: 10.3389/fchem.2023.1301496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 10/26/2023] [Indexed: 12/01/2023] Open
Abstract
In contemporary biomedical research, the development of nanotechnology has brought forth numerous possibilities for brain tumor imaging and therapy. Among these, π-conjugated materials have garnered significant attention as a special class of nanomaterials in brain tumor-related studies. With their excellent optical and electronic properties, π-conjugated materials can be tailored in structure and nature to facilitate applications in multimodal imaging, nano-drug delivery, photothermal therapy, and other related fields. This review focuses on presenting the cutting-edge advances and application prospects of π-conjugated materials in brain tumor imaging and therapeutic nanotechnology.
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Affiliation(s)
- Wenshe Sun
- Department of Interventional Medical Center, Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
- Qingdao Cancer Institute, Qingdao University, Qingdao, China
| | - Congxiao Wang
- Department of Interventional Medical Center, Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Chuan Tian
- Department of Interventional Medical Center, Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Xueda Li
- Department of Interventional Medical Center, Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Xiaokun Hu
- Department of Interventional Medical Center, Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Shifeng Liu
- Department of Interventional Medical Center, Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
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Zhong G, Qiu M, Zhang J, Jiang F, Yue X, Huang C, Zhao S, Zeng R, Zhang C, Qu Y. Fabrication and characterization of PVA@PLA electrospinning nanofibers embedded with Bletilla striata polysaccharide and Rosmarinic acid to promote wound healing. Int J Biol Macromol 2023; 234:123693. [PMID: 36806778 DOI: 10.1016/j.ijbiomac.2023.123693] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 02/03/2023] [Accepted: 02/11/2023] [Indexed: 02/19/2023]
Abstract
In this study, a novel nanofiber material with Polylactic acid (PLA), natural plant polysaccharides-Bletilla striata polysaccharide (BSP) and Rosmarinic acid (RA) as the raw materials to facilitate wound healing was well prepared through coaxial electrospinning. The morphology of RA-BSP-PVA@PLA nanofibers was characterized through scanning electron microscopy (SEM), and the successful formation of core-shell structure was verified under confocal laser microscopy (CLSM) and Fourier transform infrared spectroscopy (FTIR). RA-BSP-PVA@PLA exhibited suitable air permeability for wound healing, as indicated by the result of the water vapor permeability (WVTR) study. The results of tension test results indicated the RA-BSP-PVA@PLA nanofiber exhibited excellent flexibility and better accommodates wounds. Moreover, the biocompatibility of RA-BSP-PVA@PLA was examined through MTT assay. Lastly, RA-BSP-PVA@PLA nanofibers can induce wound tissue growth, as verified by the rat dorsal skin wound models and tissue sections. Furthermore, RA-BSP-PVA@PLA can facilitate the proliferation and transformation of early wound macrophages, and down-regulate MPO+ expression of on the wound, thus facilitating wound healing, as confirmed by the result of immunohistochemical. Thus, RA-BSP-PVA@PLA nanofibers show great potential as wound dressings in wound healing.
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Affiliation(s)
- Guofeng Zhong
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Mengyu Qiu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Junbo Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Fuchen Jiang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Xuan Yue
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Chi Huang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Shiyi Zhao
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Rui Zeng
- College of Pharmacy, Southwest Minzu University, Chengdu 610041, China
| | - Chen Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Yan Qu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
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Wu C, Chin CSM, Huang Q, Chan HY, Yu X, Roy VAL, Li WJ. Rapid nanomolding of nanotopography on flexible substrates to control muscle cell growth with enhanced maturation. Microsyst Nanoeng 2021; 7:89. [PMID: 34754504 PMCID: PMC8571286 DOI: 10.1038/s41378-021-00316-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 08/20/2021] [Accepted: 09/13/2021] [Indexed: 05/11/2023]
Abstract
In vivo, multiple biophysical cues provided by highly ordered connective tissues of the extracellular matrix regulate skeletal muscle cells to align in parallel with one another. However, in routine in vitro cell culture environments, these key factors are often missing, which leads to changes in cell behavior. Here, we present a simple strategy for using optical media discs with nanogrooves and other polymer-based substrates nanomolded from the discs to directly culture muscle cells to study their response to the effect of biophysical cues such as nanotopography and substrate stiffness. We extend the range of study of biophysical cues for myoblasts by showing that they can sense ripple sizes as small as a 100 nm width and a 20 nm depth for myotube alignment, which has not been reported previously. The results revealed that nanotopography and substrate stiffness regulated myoblast proliferation and morphology independently, with nanotopographical cues showing a higher effect. These biophysical cues also worked synergistically, and their individual effects on cells were additive; i.e., by comparing cells grown on different polymer-based substrates (with and without nanogrooves), the cell proliferation rate could be reduced by as much as ~29%, and the elongation rate could be increased as much as ~116%. Moreover, during myogenesis, muscle cells actively responded to nanotopography and consistently showed increases in fusion and maturation indices of ~28% and ~21%, respectively. Finally, under electrical stimulation, the contraction amplitude of well-aligned myotubes was found to be almost 3 times greater than that for the cells on a smooth surface, regardless of the substrate stiffness.
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Affiliation(s)
- Cong Wu
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China
| | - Chriss S. M. Chin
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China
| | - Qingyun Huang
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China
| | - Ho-Yin Chan
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China
| | - Xinge Yu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, China
| | | | - Wen J. Li
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China
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