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Taylor CS, Barnes J, Prasad Koduri M, Haq S, Gregory DA, Roy I, D'Sa RA, Curran J, Haycock JW. Aminosilane Functionalized Aligned Fiber PCL Scaffolds for Peripheral Nerve Repair. Macromol Biosci 2023; 23:e2300226. [PMID: 37364159 DOI: 10.1002/mabi.202300226] [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: 05/20/2023] [Revised: 06/13/2023] [Indexed: 06/28/2023]
Abstract
Silane modification is a simple and cost-effective tool to modify existing biomaterials for tissue engineering applications. Aminosilane layer deposition has previously been shown to control NG108-15 neuronal cell and primary Schwann cell adhesion and differentiation by controlling deposition of ─NH2 groups at the submicron scale across the entirety of a surface by varying silane chain length. This is the first study toreport depositing 11-aminoundecyltriethoxysilane (CL11) onto aligned Polycaprolactone (PCL) scaffolds for peripheral nerve regeneration. Fibers are manufactured via electrospinning and characterized using water contact angle measurements, atomic force microscopy (AFM), and X-ray photoelectron spectroscopy (XPS). Confirmed modified fibers are investigated using in vitro cell culture of NG108-15 neuronal cells and primary Schwann cells to determine cell viability, cell differentiation, and phenotype. CL11-modified fibers significantly support NG108-15 neuronal cell and Schwann cell viability. NG108-15 neuronal cell differentiation maintains Schwann cell phenotype compared to unmodified PCL fiber scaffolds. 3D ex vivo culture of Dorsal root ganglion explants (DRGs) confirms further Schwann cell migration and longer neurite outgrowth from DRG explants cultured on CL11 fiber scaffolds compared to unmodified scaffolds. Thus, a reproducible and cost-effective tool is reported to modify biomaterials with functional amine groups that can significantly improve nerve guidance devices and enhance nerve regeneration.
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Affiliation(s)
- Caroline S Taylor
- Department of Materials Science & Engineering, Kroto Research Institute, Broad Lane, Sheffield, S3 7HQ, UK
| | - Joseph Barnes
- Department of Mechanical, Materials and Aerospace, School of Engineering, University of Liverpool, Harrison Hughes Building, Liverpool, L69 3GH, UK
| | - Manohar Prasad Koduri
- Department of Mechanical, Materials and Aerospace, School of Engineering, University of Liverpool, Harrison Hughes Building, Liverpool, L69 3GH, UK
| | - Shamsal Haq
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
| | - David A Gregory
- Department of Materials Science & Engineering, Kroto Research Institute, Broad Lane, Sheffield, S3 7HQ, UK
| | - Ipsita Roy
- Department of Materials Science & Engineering, Kroto Research Institute, Broad Lane, Sheffield, S3 7HQ, UK
| | - Raechelle A D'Sa
- Department of Mechanical, Materials and Aerospace, School of Engineering, University of Liverpool, Harrison Hughes Building, Liverpool, L69 3GH, UK
| | - Judith Curran
- Department of Mechanical, Materials and Aerospace, School of Engineering, University of Liverpool, Harrison Hughes Building, Liverpool, L69 3GH, UK
| | - John W Haycock
- Department of Materials Science & Engineering, Kroto Research Institute, Broad Lane, Sheffield, S3 7HQ, UK
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Goudar VS, Koduri MP, Ta YNN, Chen Y, Chu LA, Lu LS, Tseng FG. Impact of a Desmoplastic Tumor Microenvironment for Colon Cancer Drug Sensitivity: A Study with 3D Chimeric Tumor Spheroids. ACS Appl Mater Interfaces 2021; 13:48478-48491. [PMID: 34633791 DOI: 10.1021/acsami.1c18249] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Three-dimensional (3D) spheroid culture provides opportunities to model tumor growth closer to its natural context. The collagen network in the extracellular matrix supports autonomic tumor cell proliferation, but its presence and role in tumor spheroids remain unclear. In this research, we developed an in vitro 3D co-culture model in a microwell 3D (μ-well 3D) cell-culture array platform to mimic the tumor microenvironment (TME). The modular setup is used to characterize the paracrine signaling molecules and the role of the intraspheroidal collagen network in cancer drug resistance. The μ-well 3D platform is made up of poly(dimethylsiloxane) that contains 630 round wells for individual spheroid growth. Inside each well, the growth surface measured 500 μm in diameter and was functionalized with the amphiphilic copolymer. HCT-8 colon cancer cells and/or NIH3T3 fibroblasts were seeded in each well and incubated for up to 9 days for TME studies. It was observed that NIH3T3 cells promoted the kinetics of tumor organoid formation. The two types of cells self-organized into core-shell chimeric tumor spheroids (CTSs) with fibroblasts confined to the shell and cancer cells localized to the core. Confocal microscopy analysis indicated that a type-I collagen network developed inside the CTS along with increased TGF-β1 and α-SMA proteins. The results were correlated with a significantly increased stiffness in 3D co-cultured CTS up to 52 kPa as compared to two-dimensional (2D) co-culture. CTS was more resistant to 5-FU (IC50 = 14.0 ± 3.9 μM) and Regorafenib (IC50 = 49.8 ± 9.9 μM) compared to cells grown under the 2D condition 5-FU (IC50 = 12.2 ± 3.7 μM) and Regorafenib (IC50 = 5.9 ± 1.9 μM). Targeted collagen homeostasis with Sclerotiorin led to damaged collagen structure and disrupted the type-I collagen network within CTS. Such a treatment significantly sensitized collagen-supported CTS to 5-FU (IC50 = 4.4 ± 1.3 μM) and to Regorafenib (IC50 = 0.5 ± 0.2 μM). In summary, the efficient formation of colon cancer CTSs in a μ-well 3D culture platform allows exploration of the desmoplastic TME. The novel role of intratumor collagen quality as a drug sensitization target warrants further investigation.
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Affiliation(s)
- Venkanagouda S Goudar
- Department of Engineering and System Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Manohar Prasad Koduri
- International Intercollegiate Ph.D. Program, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
- Department of Mechanical, Materials, and Aerospace, School of Engineering, University of Liverpool, Harrison Hughes Building, Liverpool L693GH, U.K
| | - Yen-Nhi Ngoc Ta
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Yunching Chen
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Li-An Chu
- Department of Biomedical and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
- Brain Research Center, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Long-Sheng Lu
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei 11031, Taiwan, ROC
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan, ROC
- International Ph.D. Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan, ROC
- Department of Radiation Oncology, Taipei Medical University Hospital, Taipei 11031, Taiwan, ROC
| | - Fan-Gang Tseng
- Department of Engineering and System Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
- International Intercollegiate Ph.D. Program, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
- Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan, ROC
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Ouyang RG, Yang CN, Qu YL, Koduri MP, Chien CW. Effectiveness of hand-arm bimanual intensive training on upper extremity function in children with cerebral palsy: A systematic review. Eur J Paediatr Neurol 2020; 25:17-28. [PMID: 31902688 DOI: 10.1016/j.ejpn.2019.12.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 11/08/2019] [Accepted: 12/13/2019] [Indexed: 10/25/2022]
Abstract
OBJECTIVE To systematically review the effectiveness of Hand-Arm Bimanual Intensive Training (HABIT) on upper limb function in children with cerebral palsy. METHODS Six databases (MEDLINE, CINAHL, PubMed, Embase, Cochrane Library, and PsycINFO) were searched for HABIT-related studies published in English between 2007 and 2017. The methodological quality of the included studies was classified based on the Levels of Evidence of the American Occupational Therapy Association guidelines. If the included studies were randomized controlled trials (RCTs), the methodological quality was evaluated using the Revised Cochrane risk of bias tool. Cohen's d effect sizes were computed and synthesized to assess the effectiveness. RESULTS Among 646 studies, 15 fulfilled the inclusion criteria. Eleven studies were RCTs, 64% of which were rated as having a high risk of bias; one was a quasi-RCT, one was a retrospective study, and two were longitudinal studies. Nearly half of the included studies used HABIT for 6 h a day for three consecutive weeks (totaling 90 h), and some studies used different doses/schedules or added training components to HABIT. Synthesis of the results demonstrated a significantly small effect size (d = 0.36, P = 0.017) for improving upper limb function immediately after the interventions, and the improvements were maintained at follow-up. Similarly, significantly moderate or large effect sizes were found for self-care function (d = 0.52, P = 0.003) and goal improvements (d = 1.78-2.28, P < 0.001). CONCLUSION This review supports the effectiveness of HABIT as an intervention for improving upper limb function in children with cerebral palsy.
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Affiliation(s)
- Rang-Ge Ouyang
- Department of Rehabilitation, Xiangya Hospital, Central South University, Hunan, China
| | - Chieh-Ning Yang
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong (SAR), China
| | - Ya-Lan Qu
- School of Communication Sciences, The Beijing Language and Culture University, Beijing, China.
| | - Manohar Prasad Koduri
- Department of Mechanical, Materials, and Aerospace, School of Engineering, University of Liverpool, Liverpool, Harrison Hughes Building, Liverpool, L69 3GH, UK; International Intercollegiate Ph.D. Program, National Tsing Hua University, No. 101, Section 2, Guangfu Road, East District, Hsinchu City, Taiwan R.O.C
| | - Chi-Wen Chien
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong (SAR), China
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Koduri MP, S Goudar V, Shao YW, Hunt JA, Henstock JR, Curran J, Tseng FG. Fluorescence-Based Nano-Oxygen Particles for Spatiometric Monitoring of Cell Physiological Conditions. ACS Appl Mater Interfaces 2018; 10:30163-30171. [PMID: 30118196 DOI: 10.1021/acsami.8b10715] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Closed-loop artificial pancreas systems have recently been proposed as a solution for treating stage I diabetes by reproducing the function of the pancreas. However, there are many unresolved issues associated with their development, including monitoring and controlling oxygen, immune responses, and the optimization of glucose, all of which need to be monitored and controlled to produce an efficient and viable artificial organ that can become integrated in the patient and maintain homeostasis. This research focused on monitoring the oxygen concentration, specifically achieving this kinetically as the oxygen gradient in an artificial pancreas made of alginate spheres containing islet cells. Functional nanoparticles (NPs) for measuring the oxygen gradient in different hydrogel cellular environments using fluorescence-based (F) microscopy were developed and tested. By the ester bond, a linker Pluronic F127 was conjugated with a carboxylic acid-modified polystyrene NP (510 nm). A hydrophilic/hydrophobic interaction between the commercially available oxygen-sensitive fluorophore and F127 results in fluorescence-based nano-oxygen particles (FNOPs). The in-house synthesized FNOP was calibrated inside electrosprayed alginate-filled hydrogels and demonstrated a good broad dynamic range (2.73-22.23) mg/L as well as a resolution of -0.01 mg/L with an accuracy of ±4%. The calibrated FNOP was utilized for continuous measuring of the oxygen concentration gradient for cell lines RIN-m5F/HeLa for more than 5 days in alginate hydrogel spheres in vitro.
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Affiliation(s)
- Manohar Prasad Koduri
- Department of Mechanical, Materials and Aerospace, School of Engineering , University of Liverpool , Harrison Hughes Building , Liverpool L69 3GH , U.K
| | | | | | - John A Hunt
- School of Science and Technology , Nottingham Trent University , Nottingham NG11 8NS , U.K
- Institute of Ageing and Chronic Disease , University of Liverpool , William Henry Duncan Building , Liverpool L7 8TX , U.K
| | - James R Henstock
- Institute of Ageing and Chronic Disease , University of Liverpool , William Henry Duncan Building , Liverpool L7 8TX , U.K
| | - Judith Curran
- Department of Mechanical, Materials and Aerospace, School of Engineering , University of Liverpool , Harrison Hughes Building , Liverpool L69 3GH , U.K
| | - Fan Gang Tseng
- Research Center for Applied Sciences , Academia Sinica , Taipei , Taiwan 11529 , ROC
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