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Weng WH, Wang CY, Yan ZY, Lee HT, Kao CY, Chang CW. Isolation and characterizations of multidrug-resistant human cancer cells by a biodegradable nano-sensor. Biosens Bioelectron 2024; 249:115985. [PMID: 38219465 DOI: 10.1016/j.bios.2023.115985] [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: 10/25/2023] [Revised: 12/14/2023] [Accepted: 12/27/2023] [Indexed: 01/16/2024]
Abstract
Multidrug resistance (MDR) remains a significant challenge in cancer therapy, with inherent and acquired resistance distinct. While conventional drug selection processes enable the isolation of cancer cells with acquired multidrug resistance, identifying cancer cells with inherent drug resistance remains challenging. Herein, we proposed a molecular beacon (MB)-based strategy to identify and isolate the inherent MDR cancer cells. A lipid/PLGA core-shell nanoparticulate system (DNCP) was designed to deliver MB for intracellular MDR1 mRNA imaging. DNCP-MB - possess a surface potential of -8 mV and a size of 150 nm - demonstrated effective delivery of MB, remarkable selectivity towards the selected intracellular mRNA targets, and low cytotoxicity. Following DNCP transfection, fluorescence-activated cell sorting (FACS) was employed to differentiate MCF-7 cells into two distinct sub-populations: the Top 10 cells with a high level of MDR gene expression and the Bottom 10 cells with a low level of MDR gene expression, which represent inherent drug-resistant and non-drug-resistant cells, respectively. Intriguingly, we observed a positive correlation between elevated MDR1 mRNA expression and increased migration, enhanced proliferation rate, and tighter spheroid formation. Moreover, we conducted RNA sequencing analysis on the Top 10, Bottom 10, and MCF-7/ADR cells. The findings revealed a notable disparity in the gene ontology enrichment analysis of differentially expressed genes between the Top 10 and Bottom 10 cells when compared to the Bottom 10 and MCF-7/ADR cells. This novel approach provides a promising avenue for isolating inherent drug-resistant cells and holds significant potential in unraveling the mechanisms underlying inherent drug resistance.
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Affiliation(s)
- Wei-Han Weng
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, 30013, Taiwan, ROC
| | - Chu-Yun Wang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, 30013, Taiwan, ROC
| | - Zi-Yu Yan
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, 30013, Taiwan, ROC
| | - Hsiang-Tzu Lee
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, 30013, Taiwan, ROC
| | - Cheng-Yuan Kao
- Immunology Research Center, National Health Research Institutes, Zhunan, Miaoli, 35053, Taiwan, ROC
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, 30013, Taiwan, ROC.
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Cheng MH, Chang CW, Wang J, Bupphathong S, Huang W, Lin CH. 3D-Bioprinted GelMA Scaffold with ASCs and HUVECs for Engineering Vascularized Adipose Tissue. ACS Appl Bio Mater 2024; 7:406-415. [PMID: 38148527 DOI: 10.1021/acsabm.3c00964] [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] [Indexed: 12/28/2023]
Abstract
The purpose of tissue engineering is to reconstruct parts of injured tissues and to resolve the shortage of organ donations. However, the main concern is the limited size of engineered tissue due to insufficient oxygen and nutrition distribution in large three-dimensional (3D) tissue constructs. To provide better support for cells inside the scaffolds, the vascularization of blood vessels within the scaffold could be a solution. This study compared the effects of different culturing systems using human adipose tissue-derived stem/stromal cells (ASCs), human umbilical vein endothelial cells (HUVECs), and coculture of ASCs and HUVECs in 3D-bioprinted gelatin methacrylate (GelMA) hydrogel constructs. The in vitro results showed that the number of live cells was highest in the coculture of ASCs and HUVECs in the GelMA hydrogel after culturing for 21 days. Additionally, the tubular structure was the most abundant in the GelMA hydrogel, containing both ASCs and HUVECs. In the in vivo test, blood vessels were present in both the HUVECs and the coculture of ASCs and HUVECs hydrogels implanted in mice. However, the blood vessel density was the highest in the HUVEC and ASC coculture groups. These findings indicate that the 3D-bioprinted GelMA hydrogel coculture system could be a promising biomaterial for large tissue engineering applications.
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Affiliation(s)
- Ming-Huei Cheng
- Center of Lymphedema Microsurgery, Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Taoyuan 33305, Taiwan
- Center for Tissue Engineering, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Jerry Wang
- Center for Tissue Engineering, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan
| | - Sasinan Bupphathong
- Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan
- High-value Biomaterials Research and Commercialization Center, National Taipei University of Technology, Taipei 10608, Taiwan
| | - Wei Huang
- Department of Orthodontics, Rutgers School of Dental Medicine, Newark, New Jersey 07103, United States
| | - Chih-Hsin Lin
- Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan
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Chang CW, Goette M, Kadom N, Wang Y, Wynne JF, Wang T, Liu T, Esiashvili N, Zhou J, Eaton BR, Yang X. Using Longitudinal MRI to Manage Proton Range Uncertainty for Pediatric Proton Craniospinal Irradiation. Int J Radiat Oncol Biol Phys 2023; 117:e505-e506. [PMID: 37785585 DOI: 10.1016/j.ijrobp.2023.06.1756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Clinical evidence has shown that proton therapy can effectively reduce side effects for pediatric patients undergoing vertebral body-sparing craniospinal irradiation (VBS CSI), compared to conventional photon treatment modalities. However, radiation-induced growth impairment remains challenging for VBS CSI due to proton range uncertainty, compromising vertebral body sparing for growing children. Previous studies have shown that fatty marrow replacement can be observed in vertebral bodies 4-48 weeks after treatment is complete. This study aims to detect and quantify the fatty marrow replacement in vertebral bodies using longitudinal magnetic resonance (MR) to manage proton range uncertainty. MATERIALS/METHODS A prospective clinical trial of proton VBS CSI was designed, and ten pediatric patients were enrolled with prescribed doses of 15-36 Gy. The thecal sac and neural foramina were the clinical target volumes, and a Monte Carlo planning system was used to robustly optimize treatment plans with a 3.5% range margin. We analyzed patients' T1/T2 MR images acquired before, during, and after proton treatment to investigate the hematopoietic marrow transformation induced by irradiation. A metric was defined to calculate the ratio of fatty and hematopoietic marrow based on relative MR intensity histograms. We proposed a machine learning method via Gaussian fitting process (ML-GFP) to explore hidden correlations between marrow transition and radiation dose to 2 cm3 of the bone marrow (D2cc). We also leveraged this method to embed uncertainty to support potential proton range management for VBS enhancement. RESULTS The results indicated that fatty marrow replacement could be observed during inter-fractional treatment. For instance, an individual patient showed that the fatty marrow generation ratios were 0.54, 0.74, and 0.45, corresponding to 11, 18, and 65 days after the treatment started. Using ML-GFP, the fatty marrow transition was found to be quadratically correlated to treatment fractions, and the maximum transformation ranged from 40 to 50 days. Then marrow regeneration was observed due to the decrease in fatty marrow ratios. The fatty marrow ratios were also positively correlated to the D2cc doses ranging from 10 Gy to 36 Gy. Limited by insufficient low-dose data, the ML-GFP model extrapolated the data to predict the marrow transformation below 10 Gy. CONCLUSION We demonstrated the feasibility of using non-invasive longitudinal MR to quantify the fatty marrow transition from inter-fractional treatment. Based on this prospective study, the method can detect early fatty marrow generation in vertebrae caused by proton irradiation due to the conservative range margin used for robust optimization. The proposed method could be used to validate the actual proton range, allowing an accurate range margin to be defined to preserve bone marrow. Future investigation will likely focus on clinical implementation to improve life quality for pediatric CSI patients.
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Affiliation(s)
| | | | - N Kadom
- Emory University, Atlanta, GA
| | - Y Wang
- Department of Radiation Oncology, Winship Cancer Institute of Emory University, Atlanta, GA
| | - J F Wynne
- Department of Radiation Oncology, Winship Cancer Institute of Emory University, Atlanta, GA
| | - T Wang
- Department of Radiation Oncology, Winship Cancer Institute of Emory University, Atlanta, GA
| | - T Liu
- Icahn School of Medicine at Mount Sinai, New York, NY
| | - N Esiashvili
- Department of Radiation Oncology, Winship Cancer Institute of Emory University, Atlanta, GA
| | - J Zhou
- Department of Radiation Oncology, Winship Cancer Institute of Emory University, Atlanta, GA
| | - B R Eaton
- Department of Radiation Oncology, Winship Cancer Institute of Emory University, Atlanta, GA
| | - X Yang
- Department of Radiation Oncology, Emory University, Atlanta, GA
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Chang CW, Bohannon D, Tian Z, Wang Y, McDonald MW, Yu DS, Liu T, Zhou J, Yang X. Estimating Potential Benefits of Online Adaptive Proton Therapy for Head-and-Neck Cancer: A Retrospective Study. Int J Radiat Oncol Biol Phys 2023; 117:e649. [PMID: 37785928 DOI: 10.1016/j.ijrobp.2023.06.2069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Proton therapy is highly sensitive to anatomical changes and setup variations in head-and-neck (HN) treatments. To address this issue, proton centers often acquire patient CT images weekly to monitor patient anatomical changes during the treatment course and perform offline plan adaptation when needed. However, offline adaptation cannot fully account for daily setup variations or the anatomical changes occurring with high frequency. There are a few groups endeavoring to develop advanced technologies to enable online adaptive proton therapy (APT). However, the necessity of online APT remains controversial, as it is unknown that whether online APT will significantly improve treatment quality and outcomes compared to offline APT. The purpose of this study is to estimate the clinical potential of online APT in the management of HN cancers in relation to the current offline APT. MATERIALS/METHODS Our retrospective study was conducted with four HN patients (35 fractions per patient), who had been treated with intensity modulated proton therapy and had offline adaptation once or twice during their treatment courses. Synthetic CT (sCT) images were generated from 140 daily CBCT images for us to recalculate the dose of the treatment plan in patient's actual treatment anatomy for each treatment fraction and adapt the plan when warranted. These adaptations were assumed to be performed online before treatment delivery to mimic an online APT course. Accumulative doses were calculated for both courses using the CBCT-based sCT images of every fraction for us to compare the target coverage, organ at risk (OAR) sparing, tumor control probability (TCP) and normal tissue complication probability (NTCP). An in-house script was developed to semi-automate this process in a commercial treatment planning system to facilitate our study. RESULTS All patients would benefit from online APT to different extents. For the first patient, with OAR doses comparable to the actual offline course, the retrospective online APT course improved dose coverages of the three CTVs from 95.2%, 98.64% and 89.53% to 98.88%, 99.81%, 98.97%, which would lead to a 4.52% improvement in TCP. Similarly, online APT would yield a 2.66% improvement in TCP for the second patient. For the third patient, with comparable CTV dose coverages, the mean doses of right parotid and oral cavity were decreased from 29.52 Gy relative biological effectiveness (RBE) and 41.89 Gy RBE to 22.16 Gy RBE and 34.61 Gy RBE, leading to a reduce of 1.67% and 3.40% in NTCP. The mean dose of right parotid was decreased from 21.71 Gy RBE to 19.37 Gy RBE for the last patient, leading to a reduce of 0.73% in NTCP. CONCLUSION Our results showed that online APT could better maintain the treatment plan quality than offline APT for all the four patients, despite their significant anatomical changes. Future investigation will focus on collecting more patient data to obtain statistically significant results and help identify the patients to whom the online APT will be of most benefit.
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Affiliation(s)
| | - D Bohannon
- Department of Medical Physics, Georgia Institute of Technology, Atlanta, GA
| | | | - Y Wang
- Department of Radiation Oncology, Winship Cancer Institute of Emory University, Atlanta, GA
| | - M W McDonald
- Winship Cancer Institute of Emory University, Department of Radiation Oncology, Atlanta, GA
| | - D S Yu
- Emory University, Atlanta, GA
| | - T Liu
- Icahn School of Medicine at Mount Sinai, New York, NY
| | - J Zhou
- Department of Radiation Oncology, Winship Cancer Institute of Emory University, Atlanta, GA
| | - X Yang
- Department of Radiation Oncology, Emory University, Atlanta, GA
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Chang CW, Wang HW, Huang WH, Chuang PH. Unusual upper gastrointestinal bleeding following radiofrequency ablation and transarterial chemoembolization for hepatocellular carcinoma. J Postgrad Med 2023; 69:237-238. [PMID: 36861547 PMCID: PMC10846808 DOI: 10.4103/jpgm.jpgm_764_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 11/15/2021] [Accepted: 12/09/2021] [Indexed: 02/25/2023] Open
Affiliation(s)
- CW Chang
- Department of Internal Medicine, Center for Digestive Medicine, China Medical University Hospital, Taichung, Taiwan
| | - HW Wang
- Department of Internal Medicine, Center for Digestive Medicine, China Medical University Hospital, Taichung, Taiwan
| | - WH Huang
- Department of Internal Medicine, Center for Digestive Medicine, China Medical University Hospital, Taichung, Taiwan
| | - PH Chuang
- Department of Internal Medicine, Center for Digestive Medicine, China Medical University Hospital, Taichung, Taiwan
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Chiang MR, Shen WT, Huang PX, Wang KL, Weng WH, Chang CW, Chiang WH, Liu YC, Chang SJ, Hu SH. Programmed T cells infiltration into lung metastases with harnessing dendritic cells in cancer immunotherapies by catalytic antigen-capture sponges. J Control Release 2023; 360:260-273. [PMID: 37364798 DOI: 10.1016/j.jconrel.2023.06.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 02/22/2023] [Revised: 05/22/2023] [Accepted: 06/22/2023] [Indexed: 06/28/2023]
Abstract
T lymphocytes served as immune surveillance to suppress metastases by physically interacting with cancer cells. Whereas tumor immune privilege and heterogeneity protect immune attack, it limits immune cell infiltration into tumors, especially in invasive metastatic clusters. Here, a catalytic antigen-capture sponge (CAS) containing the catechol-functionalized copper-based metal organic framework (MOF) and chloroquine (CQ) for programming T cells infiltration is reported. The intravenously injected CAS accumulates at the tumor via the folic acid-mediated target and margination effect. In metastases, Fenton-like reaction induced by copper ions of CAS disrupts the intracellular redox potential, i.e., chemodynamic therapy (CDT), thereby reducing glutathione (GSH) levels. Furthermore, CQ helps inhibit autophagy by inducing lysosomal deacidification during CDT. This process leads to the breakdown of self-defense mechanisms, which exacerbates cytotoxicity. The therapies promote the liberation of tumor-associated antigens, such as neoantigens and damage-associated molecular patterns (DAMPs). Subsequently, the catechol groups present on CAS perform as antigen reservoirs and transport the autologous tumor-associated antigens to dendritic cells, resulting in prolonged immune activation. The CAS, which is capable of forming in-situ, serves as an antigen reservoir in CDT-mediated lung metastasis and leads to the accumulation of immune cells in metastatic clusters, thus hindering metastatic tumors.
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Affiliation(s)
- Min-Ren Chiang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Wei-Ting Shen
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan; Department of Nanoengineering, University of California, San Diego, CA 92093, USA
| | - Pin-Xuan Huang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Kang-Li Wang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Wei-Han Weng
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Wen-Hsuan Chiang
- Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan
| | - Yu-Chen Liu
- Laboratory for Human Immunology (Single Cell Genomics), WPI Immunology Frontier Research Center, Osaka University, Japan; Center for Infectious Disease Education and Research (CiDER), Osaka University, Osaka, Japan
| | - Shing-Jyh Chang
- Department of Obstetrics and Gynecology, Hsinchu Municipal MacKay Children's Hospital, Hsinchu 300, Taiwan; Department of Nursing, Yuanpei University of Medical Technology, Hsinchu 300, Taiwan
| | - Shang-Hsiu Hu
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan.
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Bohannon D, Janopaul-Naylor J, Rudra S, Yang X, Chang CW, Wang Y, Ma C, Patel SA, McDonald MW, Zhou J. Prediction of plan adaptation in head and neck cancer proton therapy using clinical, radiographic, and dosimetric features. Acta Oncol 2023:1-8. [PMID: 37335043 DOI: 10.1080/0284186x.2023.2224050] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 06/01/2023] [Indexed: 06/21/2023]
Abstract
PURPOSE Because proton head and neck (HN) treatments are sensitive to anatomical changes, plan adaptation (re-plan) during the treatment course is needed for a significant portion of patients. We aim to predict re-plan at plan review stage for HN proton therapy with a neural network (NN) model trained with patients' dosimetric and clinical features. The model can serve as a valuable tool for planners to assess the probability of needing to revise the current plan. METHODS AND MATERIALS Mean beam dose heterogeneity index (BHI), defined as the ratio of the maximum beam dose to the prescription dose, plan robustness features (clinical target volume (CTV), V100 changes, and V100 > 95% passing rates in 21 robust evaluation scenarios), as well as clinical features (e.g., age, tumor site, and surgery/chemotherapy status) were gathered from 171 patients treated at our proton center in 2020, with a median age of 64 and stages from I-IVc across 13 HN sites. Statistical analyses of dosimetric parameters and clinical features were conducted between re-plan and no-replan groups. A NN was trained and tested using these features. Receiver operating characteristic (ROC) analysis was conducted to evaluate the performance of the prediction model. A sensitivity analysis was done to determine feature importance. RESULTS Mean BHI in the re-plan group was significantly higher than the no-replan group (p < .01). Tumor site (p < .01), chemotherapy status (p < .01), and surgery status (p < .01) were significantly correlated to re-plan. The model had sensitivities/specificities of 75.0%/77.4%, respectively, and an area under the ROC curve of .855. CONCLUSION There are several dosimetric and clinical features that correlate to re-plans, and NNs trained with these features can be used to predict HN re-plans, which can be used to reduce re-plan rate by improving plan quality.
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Affiliation(s)
- D Bohannon
- Department of Nuclear and Radiological Engineering, Georgia institute of Technology, Atlanta, GA, USA
| | - J Janopaul-Naylor
- Department of Radiation Oncology, Emory University, Atlanta, GA, USA
| | - S Rudra
- Department of Radiation Oncology, Emory University, Atlanta, GA, USA
| | - X Yang
- Department of Radiation Oncology, Emory University, Atlanta, GA, USA
| | - C W Chang
- Department of Radiation Oncology, Emory University, Atlanta, GA, USA
| | - Y Wang
- Department of Radiation Oncology, Emory University, Atlanta, GA, USA
| | - C Ma
- Department of Radiation Oncology, Emory University, Atlanta, GA, USA
| | - S A Patel
- Department of Radiation Oncology, Emory University, Atlanta, GA, USA
| | - M W McDonald
- Department of Radiation Oncology, Emory University, Atlanta, GA, USA
| | - J Zhou
- Department of Radiation Oncology, Emory University, Atlanta, GA, USA
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Huynh TMH, Yalamandala BN, Chiang MR, Weng WH, Chang CW, Chiang WH, Liao LD, Liu YC, Hu SH. Programmed antigen capture-harnessed dendritic cells by margination-hitchhiking lung delivery. J Control Release 2023; 358:718-728. [PMID: 37230295 DOI: 10.1016/j.jconrel.2023.05.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 04/18/2023] [Accepted: 05/19/2023] [Indexed: 05/27/2023]
Abstract
Adoptive T cells and immunotherapy suppress the most destructive metastatic tumors and prevent tumor recurrence by inducing T lymphocytes. However, the heterogeneity and immune privilege of invasive metastatic clusters often reduce immune cell infiltration and therapeutic efficacy. Here, the red blood cells (RBC)-hitchhiking mediated lung metastasis delivery of multi-grained iron oxide nanostructures (MIO) programming the antigen capture, dendritic cell harnessing, and T cell recruitment is developed. MIO is assembled to the surface of RBCs by osmotic shock-mediated fusion, and reversible interactions enable the transfer of MIO to pulmonary capillary endothelial cells by intravenous injection by squeezing RBCs at the pulmonary microvessels. RBC-hitchhiking delivery revealed that >65% of MIOs co-localized in tumors rather than normal tissues. In alternating magnetic field (AMF)-mediated magnetic lysis, MIO leads to the release of tumor-associated antigens, namely neoantigens and damage-associated molecular patterns. It also acted as an antigen capture agent-harnessed dendritic cells delivers these antigens to lymph nodes. By utilizing site-specific targeting, erythrocyte hitchhiker-mediated delivery of MIO to lung metastases improves survival and immune responses in mice with metastatic lung tumors.
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Affiliation(s)
- Thi My Hue Huynh
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Bhanu Nirosha Yalamandala
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Min-Ren Chiang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Wei-Han Weng
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Wen-Hsuan Chiang
- Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan
| | - Lun-De Liao
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli County 35053, Taiwan
| | - Yu-Chen Liu
- Immunology Frontier Research Center, Osaka University, Osaka 565-0871, Japan
| | - Shang-Hsiu Hu
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300044, Taiwan.
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Lin HP, Chang TH, Lee HF, Tsai YH, Chang CW, Chiang HC, Liu HE. Comparison of the early development of the professional values for nursing students in the traditional program and the second-degree program: a longitudinal study. Nurs Open 2021; 9:1105-1113. [PMID: 34914200 PMCID: PMC8859053 DOI: 10.1002/nop2.1150] [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] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 10/21/2021] [Accepted: 11/16/2021] [Indexed: 11/09/2022] Open
Abstract
Aim This study aims to compare the early development of professional value between the students in the traditional programme (BSN) and those in the accelerated BSN (ABSN) programmes. Design A longitudinal design was conducted. Methods Data were collected from three schools of nursing during one academic year. A total of 117 BSN students and 101 ABSN students completed the survey of demographic information and the Nurses’ Professional Values Scale–Revised questionnaires. All data were analysed by IBM SPSS‐Statistics 22. Results Results showed that, in the beginning of the first professional nursing course, both students in the BSN and the ABSN programmes reported similar level of professional values. However, after one academic year, the changes in the professional value varied both between these two programmes and among the three different nursing schools. The increased professional value in school A represented the possibility for students to improve during their first‐year professional nursing programme. As educators, we should redesign our teaching strategies according to the different conditions of students in each programme.
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Affiliation(s)
- Hui-Ping Lin
- Department of Nursing, Taoyuan Branch of the Ministry of Health and Welfare, Taoyuan, Taiwan.,Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Tsai-Hsiu Chang
- Department of nursing, Hungkuang University, Taichung, Taiwan
| | - Hsiu-Fang Lee
- Department of Nursing, Chang Gung Memorial Hospital, Tao-Yuan, Taiwan.,Department of Nursing, College of Nursing, Chang Gung University of Science and Technology, Taoyuan, Taiwan
| | - Yu-Hsia Tsai
- School of Nursing, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan.,Department of Cardiovascular Medicine, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - C W Chang
- School of Nursing, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan.,Assistant Research Fellow at Division of Pediatric Endocrinology & Genetics, Department of Pediatrics, Chang-Gung Memorial Hospital, TaoYuan, Taiwan
| | - Hui-Chu Chiang
- School of Nursing, National Taipei University of Nursing and Health Sciences Science, Taipei, Taiwan
| | - Hsueh-Erh Liu
- Department of Nursing, College of Nursing, Chang Gung University of Science and Technology, Taoyuan, Taiwan.,School of Nursing, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan.,Department of Rheumatology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
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10
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Ravula V, Lo YL, Wu YT, Chang CW, Patri SV, Wang LF. Arginine-tocopherol bioconjugated lipid vesicles for selective pTRAIL delivery and subsequent apoptosis induction in glioblastoma cells. Mater Sci Eng C Mater Biol Appl 2021; 126:112189. [PMID: 34082988 DOI: 10.1016/j.msec.2021.112189] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 04/29/2021] [Accepted: 05/13/2021] [Indexed: 01/02/2023]
Abstract
The incorporation of specific therapeutic gene into glioblastoma offers potent therapeutic strategy to treat the disease. Non-viral gene delivery vectors are of particular interest due to their tuneable transfection efficiency and easy scale-up. Herein, we demonstrate successful delivery of plasmid encoding tumor necrosis factor (TNF)-related apoptosis-inducing ligand (pTRAIL) using arginine-conjugated tocopherol lipid (AT) nanovesicles into glioblastoma cell lines. Another cationic lipid, glycine-conjugated tocopherol lipid (GT) having glycine in the head group region is also synthesized as a control lipid. Both lipid-derived liposomes effectively condensed the pDNA and the corresponding biomacromolecular assemblies (lipoplexes) are efficiently transfected into different cell lines. AT-based liposomes exhibit higher transfection efficacy in various cell lines, particularly selective in glioma cell lines. At an optimized N/P ratio, both the liposomal formulations show low cytotoxicity. AT-based lipoplexes have superior cellular uptake in U87 than the control lipid GT. The expression of TRAIL protein regulated death receptor and apoptosis signaling pathway is assayed by western blot using transfection of AT-based/pTRAIL into U87 cell lines. Induction of apoptosis in U87 cells exposed to AT-based/pTRAIL plasmid is evaluated by MTT assay as well as Annexin V-propidium iodide dual-staining assay. All results indicate that the developed AT-based/pTRAIL system offers a potentially safe and efficient therapeutic strategy for glioblastoma gene therapy.
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Affiliation(s)
- Venkatesh Ravula
- Department of Chemistry, National Institute of Technology, Warangal 506004, India; Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yu-Lun Lo
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yi-Ting Wu
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Science, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Srilakshmi V Patri
- Department of Chemistry, National Institute of Technology, Warangal 506004, India.
| | - Li-Fang Wang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan.
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11
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Abstract
Gene delivery is an indispensable technique for various biomedical applications such as gene therapy, stem cell engineering and gene editing. Recently, magnetic nanoparticles (MNPs) have received increasing attention for their use in promoting gene delivery efficiency. Under magnetic attraction, gene delivery efficiency using viral or nonviral gene carriers could be universally enhanced. Besides, magnetic nanoparticles could be utilized in magnetic resonance imaging or magnetic hyperthermia therapy, providing extra theranostic opportunities. In this review, recent research integrating MNPs with a viral or nonviral gene vector is summarized from both technical and application perspectives. Applications of MNPs in cutting-edge research technologies, such as biomimetic cell membrane nano-gene carriers, exosome-based gene delivery, cell-based drug delivery systems or CRISPR/Cas9 gene editing, are also discussed.
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Affiliation(s)
- Rih-Yang Huang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan.
| | - Zhuo-Hao Liu
- Department of Neurosurgery, Chang Gung Memorial Hospital at Linkou, Chang Gung Medical College and University, Taiwan.
| | - Wei-Han Weng
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan.
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan.
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12
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Chuang CC, Chen YN, Wang YY, Huang YC, Lin SY, Huang RY, Jang YY, Yang CC, Huang YF, Chang CW. Stem Cell-Based Delivery of Gold/Chlorin e6 Nanocomplexes for Combined Photothermal and Photodynamic Therapy. ACS Appl Mater Interfaces 2020; 12:30021-30030. [PMID: 32594734 DOI: 10.1021/acsami.0c03446] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [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: 06/11/2023]
Abstract
Combining photothermal and photodynamic modalities has shown encouraging therapeutic efficacy against various malignant cancers. Developing a delivery method for targeting and penetrating tumors is still a major focus for advancing this therapeutic approach. Herein, we report a novel strategy involving the utilization of stem cells as a live carrier to codeliver photothermal and photodynamic agents for cancer therapy. To this end, a novel gold nanorod (AuNR)-PEG-PEI (APP)/chlorin e6 (Ce6)-loaded adipose-derived stem cell (ADSC) system is proposed in which AuNRs and Ce6 act as the photothermal and photodynamic agents, respectively. To integrate with stem cells, the APP/Ce6 nanocomplexes exhibit advantages of low drug leakage, low cytotoxicity, efficient cellular uptake, and redox-responsive release. After loading of APP/Ce6 nanocomplexes, the ADSCs still maintained good tumor tropism and were capable of penetrating into the tumor spheroids. The photothermal effect induced by exposure to near-infrared light irradiation at 808 nm promoted the release of Ce6 from the stem cells into the surroundings and hence increased its availability to treat cancer cells. APP/Ce6-loaded ADSCs exerted effective dose-dependent in vitro anticancer activities via anticipated photothermal and photodynamic effects. In a murine CT26 colon cancer model, APP/Ce6 delivered by ADSCs resulted in superior tumor suppression compared to other delivery strategies. It was also noted that in vivo applications of APP/Ce6-loaded ADSCs did not induce noticeable detrimental effects on normal tissues/organs.
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Affiliation(s)
- Chun-Chiao Chuang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan R.O.C
| | - Yi-Ning Chen
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan R.O.C
| | - Yi-Ya Wang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan R.O.C
| | - Yu-Chen Huang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan R.O.C
| | - Ssu-Yu Lin
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan R.O.C
| | - Rih-Yang Huang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan R.O.C
| | - Yu-Yun Jang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan R.O.C
| | - Chun-Chi Yang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan R.O.C
| | - Yu-Fen Huang
- Institute of Analytical and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan R.O.C
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan R.O.C
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13
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Ho YJ, Hsu HC, Kang ST, Fan CH, Chang CW, Yeh CK. Ultrasonic Transdermal Delivery System with Acid–Base Neutralization-Generated CO2 Microbubble Cavitation. ACS Appl Bio Mater 2020; 3:1968-1975. [DOI: 10.1021/acsabm.9b01126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Yi-Ju Ho
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Hui-Ching Hsu
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Shih-Tsung Kang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
- Trust Bio-sonics, Zhubei City 30261, Taiwan
| | - Ching-Hsiang Fan
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Chih-Kuang Yeh
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
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14
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Wu CY, Huang RY, Liao EC, Lin YC, Ho YJ, Chang CW, Chan HL, Huang YZ, Hsieh TH, Fan CH, Yeh CK. A preliminary study of Parkinson's gene therapy via sono-magnetic sensing gene vector for conquering extra/intracellular barriers in mice. Brain Stimul 2020; 13:786-799. [PMID: 32289709 DOI: 10.1016/j.brs.2020.02.024] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 09/18/2019] [Revised: 01/31/2020] [Accepted: 02/19/2020] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Non-virus genetic treatment for Parkinson's disease (PD) via plasmid glial cell-line derived neurotrophic factor (pGDNF) has shown potential for repairing damaged dopaminergic neurons. However, development of this gene therapy is largely hampered by the insufficient transfection efficiency as a result of the cell membrane, lysosome, and cytoskeleton meshwork. METHODS In this study, we propose the use of polyethylenimine (PEI)-superparamagnetic iron oxide-plasmid DNA (pDNA)-loaded microbubbles (PSp-MBs) in conjunction with focused ultrasound (FUS) and two-step magnetic navigation to provide cavitation, proton sponge effect and magnetic effects to increase the efficiency of gene delivery. RESULTS The gene transfection rate in the proposed system was 2.2-fold higher than that of the commercial agent (TransIT®-LT1). The transfection rate could be boosted ∼11%, ∼10%, and 6% by cavitation-magnetic hybrid enhanced cell membrane permeabilization, proton sponge effect, and magnetic-assisted cytoskeleton-reorganization, respectively. In vivo data suggested that effective gene delivery with this system results in a 3.2-fold increase in recovery of dopaminergic neurons and a 3.9-fold improvement in the motor behavior when compared to untreated genetic PD mice. CONCLUSIONS We proposed that this novel FUS-magnetic hybrid gene delivery platform could be integrated with a variety of therapeutic genes for treating neurodegenerative diseases in the future.
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Affiliation(s)
- Chun-Yao Wu
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Rih-Yang Huang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - En-Chi Liao
- Department of Medical Science, Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Yu-Chun Lin
- Institute of Molecular Medicine, National Tsing Hua University, Hsinchu, Taiwan; Department of Molecular Science, National Tsing Hua University, Hsinchu, Taiwan
| | - Yi-Ju Ho
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Hong-Lin Chan
- Department of Medical Science, Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Ying-Zu Huang
- Neuroscience Research Center, Healthy Aging Research Center and Department of Neurology, Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Taipei, Taiwan
| | - Tsung-Hsun Hsieh
- School of Physical Therapy & Neuroscience Research Center, Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Taipei, Taiwan
| | - Ching-Hsiang Fan
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan.
| | - Chih-Kuang Yeh
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan; Institute of Nuclear Engineering and Science, National Tsing Hua University, Hsinchu, Taiwan.
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15
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Huang RY, Lin YH, Lin SY, Li YN, Chiang CS, Chang CW. Magnetic ternary nanohybrids for nonviral gene delivery of stem cells and applications on cancer therapy. Theranostics 2019; 9:2411-2423. [PMID: 31149052 PMCID: PMC6531296 DOI: 10.7150/thno.29326] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Accepted: 02/02/2019] [Indexed: 01/14/2023] Open
Abstract
Cancer toxic agent-expressing mesenchymal stem cells (MSCs), which possess inherent tumor migration and penetration capabilities, have received increasing attention in cancer therapy. To ensure that this approach is successful, safe and efficient gene delivery methods for stem cell engineering must be developed. Methods: In this study, a magnetic ternary nanohybrid (MTN) system comprising biodegradable cationic materials, nucleic acids, and hyaluronic acid-decorated superparamagnetic iron oxide nanoparticles was proposed to construct stem cells expressing the tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) via magnetic force and receptor dual targeting. Results: The CD44/magnetic force-mediated enhanced cellular uptake of MTNs by human mesenchymal cells (hMSCs) was confirmed in vitro. Highly efficient transfection was attained using MTNs without having any detrimental effect on the tumor migration and penetration capabilities of hMSCs. TRAIL expressed by the MTN-transfected hMSCs displayed strong anticancer effects through the activation of caspase-3 apoptotic signaling. The MTN-transfected hMSCs can be clearly imaged using magnetic resonance imaging techniques in vivo. In an orthotopic xenograft cancer model, MTN-transfected TRAIL-expressing hMSCs significantly suppressed the progression of human glioma (U87MG) and prolonged the survival of the animal. Conclusions: These findings suggest the considerable potential of utilizing MTNs for effectively constructing tumor toxic agent-expressing stem cells for treating malignant cancers.
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Affiliation(s)
| | | | | | | | | | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan R.O.C
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16
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Chuang CC, Cheng CC, Chen PY, Lo C, Chen YN, Shih MH, Chang CW. Gold nanorod-encapsulated biodegradable polymeric matrix for combined photothermal and chemo-cancer therapy. Int J Nanomedicine 2018; 14:181-193. [PMID: 30613145 PMCID: PMC6306055 DOI: 10.2147/ijn.s177851] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
PURPOSE A biocompatible nanocomplex system co-encapsulated with gold nanorods (AuNRs) and doxorubicin (DOX) was investigated for its potentials on the combined photothermal- and chemotherapy. MATERIALS AND METHODS Hydrophobic AuNRs were synthesized by the hexadecyltrimethyl-ammonium bromide (CTAB)-mediated seed growth method, and then, they received two-step surface modifications of polyethylene glycol (PEG) and dodecane. The AuNR/DOX/poly(lactic-co-glycolic acid) (PLGA) nanocomplexes were prepared by emulsifying DOX, AuNR, and PLGA into aqueous polyvinyl alcohol solution by sonication. Human serum albumin (HSA) was used to coat the nanocomplexes to afford HSA/AuNR/DOX-PLGA (HADP). Size and surface potential of the HADP nanocomplexes were determined by using a Zetasizer. Cytotoxicity and cellular uptake of the HADP were analyzed by using MTT assay and flow cytometry, respectively. In vitro anticancer effects of the HADP were studied on various cancer cell lines. To assess the therapeutic efficacy, CT26 tumor-bearing mice were intravenously administered with HADP nanocomplexes and laser treatments, followed by monitoring of the tumor growth and body weight. RESULTS Size and surface potential of the HADP nanocomplexes were 245.8 nm and -8.6 mV, respectively. Strong photothermal effects were verified on the AuNR-loaded PLGA nanoparticles (NPs) in vitro. Rapid and repeated drug release from the HADP nanocomplexes was successfully achieved by near-infrared (NIR) irradiations. HSA significantly promoted cellular uptake of the HADP nanocomplexes to murine colon cancer cells as demonstrated by cell imaging and flow cytometric studies. By combining photothermal and chemotherapy, the HADP nanocomplexes exhibited strong synergistic anticancer effects in vitro and in vivo. CONCLUSION An NIR-triggered drug release system by encapsulating hydrophobic AuNR and DOX inside the PLGA NPs has been successfully prepared in this study. The HADP NPs show promising combined photothermal- and chemotherapeutic effects without inducing undesired side effects on a murine colon cancer animal model.
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Affiliation(s)
- Chun-Chiao Chuang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan, Republic of China,
| | - Chih-Chi Cheng
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan, Republic of China,
| | - Pei-Ying Chen
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan, Republic of China,
| | - Chieh Lo
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan, Republic of China,
| | - Yi-Ning Chen
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan, Republic of China,
| | - Min-Hsiung Shih
- Research Center of Applied Sciences (RCAS), Academia Sinica, Taipei, 11529, Taiwan, Republic of China
- Department of Photonics, National Chiao Tung University (NCTU), Hsinchu, 30010, Taiwan, Republic of China
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan, Republic of China,
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17
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Wu VC, Chen SW, Wu M, Liu CH, Chang CW, Chen CC, Wu KP, Chang SH, Lin MS, Lee TH, Hsieh IC, Chu PH, Lin YS. P5138Resuming anticoagulation in patients with atrial fibrillation experiencing hemorrhage stroke or nontraumatic intracranial hemorrhage. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- V C Wu
- Chang Gung Memorial Hospital, Division of Cardiology, Taoyuan City, Taiwan ROC
| | - S W Chen
- Chang Gung Memorial Hospital, Department of Cardiothoracic and Vascular Surgery, Taoyuan City, Taiwan ROC
| | - M Wu
- Brown University, Division of Cardiovascular Medicine, Providence, United States of America
| | - C H Liu
- Chang Gung Memorial Hospital, Department of Neurology, Taoyuan City, Taiwan ROC
| | - C W Chang
- Chang Gung Memorial Hospital, Department of Neurology, Taoyuan City, Taiwan ROC
| | - C C Chen
- Chang Gung Memorial Hospital, Department of Neurosurgery, Taoyuan City, Taiwan ROC
| | - K P Wu
- Chang Gung Memorial Hospital, Department of Physical Medicine and Rehabilitation, Taoyuan City, Taiwan ROC
| | - S H Chang
- Chang Gung Memorial Hospital, Division of Cardiology, Taoyuan City, Taiwan ROC
| | - M S Lin
- Chang Gung Memorial Hospital, Department of Cardiology, Chiayi, Taiwan ROC
| | - T H Lee
- Chang Gung Memorial Hospital, Department of Neurology, Taoyuan City, Taiwan ROC
| | - I C Hsieh
- Chang Gung Memorial Hospital, Division of Cardiology, Taoyuan City, Taiwan ROC
| | - P H Chu
- Chang Gung Memorial Hospital, Division of Cardiology, Taoyuan City, Taiwan ROC
| | - Y S Lin
- Chang Gung Memorial Hospital, Department of Cardiology, Chiayi, Taiwan ROC
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18
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Li TN, Wu YJ, Tsai HW, Sun CP, Wu YH, Wu HL, Pei YN, Lu KY, Yen TTC, Chang CW, Chan HL, Tao MH, Liou JY, Chang MDT, Su IJ, Wang LHC. Intrahepatic hepatitis B virus large surface antigen induces hepatocyte hyperploidy via failure of cytokinesis. J Pathol 2018; 245:502-513. [PMID: 29862509 DOI: 10.1002/path.5102] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [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: 01/30/2018] [Revised: 05/11/2018] [Accepted: 05/21/2018] [Indexed: 12/16/2022]
Abstract
Hepatitis B virus (HBV) is an aetiological factor for liver cirrhosis and hepatocellular carcinoma (HCC). Despite current antiviral therapies that successfully reduce the viral load in patients with chronic hepatitis B, persistent hepatitis B surface antigen (HBsAg) remains a risk factor for HCC. To explore whether intrahepatic viral antigens contribute directly to hepatocarcinogenesis, we monitored the mitotic progression of HBV-positive cells. Cytokinesis failure was increased in HBV-positive HepG2.2.15 and 1.3ES2 cells, as well as in HuH-7 cells transfected with a wild-type or X-deficient HBV construct, but not in cells transfected with an HBsAg-deficient construct. We show that expression of viral large surface antigen (LHBS) was sufficient to induce cytokinesis failure of immortalized hepatocytes. Premitotic defects with DNA damage and G2 /M checkpoint attenuation preceded cytokinesis in LHBS-positive cells, and ultimately resulted in hyperploidy. Inhibition of polo-like kinase-1 (Plk1) not only restored the G2 /M checkpoint in these cells, but also suppressed LHBS-mediated in vivo tumourigenesis. Finally, a positive correlation between intrahepatic LHBS expression and hepatocyte hyperploidy was detected in >70% of patients with chronic hepatitis B. We conclude that HBV LHBS provokes hyperploidy by inducing DNA damage and upregulation of Plk1; the former results in atypical chromatin structures, and the latter attenuates the function of the G2 /M DNA damage checkpoint. Our data uncover a mechanism by which genomic integrity of hepatocytes is disrupted by viral LHBS. These findings highlight the role of intrahepatic surface antigen as an oncogenic risk factor in the development of HCC. Copyright © 2018 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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MESH Headings
- Animals
- Carcinoma, Hepatocellular/genetics
- Carcinoma, Hepatocellular/metabolism
- Carcinoma, Hepatocellular/pathology
- Carcinoma, Hepatocellular/virology
- Cell Cycle Proteins/metabolism
- Cell Transformation, Viral
- Cytokinesis
- DNA Damage
- Disease Models, Animal
- G2 Phase Cell Cycle Checkpoints
- Hep G2 Cells
- Hepatitis B Surface Antigens/genetics
- Hepatitis B Surface Antigens/metabolism
- Hepatitis B Virus, Woodchuck/genetics
- Hepatitis B Virus, Woodchuck/metabolism
- Hepatitis B virus/genetics
- Hepatitis B virus/metabolism
- Hepatitis B, Chronic/genetics
- Hepatitis B, Chronic/metabolism
- Hepatitis B, Chronic/pathology
- Hepatitis B, Chronic/virology
- Hepatocytes/metabolism
- Hepatocytes/pathology
- Hepatocytes/transplantation
- Hepatocytes/virology
- Host-Pathogen Interactions
- Humans
- Liver Neoplasms/genetics
- Liver Neoplasms/metabolism
- Liver Neoplasms/pathology
- Liver Neoplasms/virology
- Marmota
- Mice, Transgenic
- Ploidies
- Protein Serine-Threonine Kinases/metabolism
- Proto-Oncogene Proteins/metabolism
- Polo-Like Kinase 1
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Affiliation(s)
- Tian-Neng Li
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Yi-Ju Wu
- Institute of Molecular Medicine, National Tsing Hua University, Hsinchu, Taiwan
- Institute of Cellular and System Medicine, National Health Research Institutes, Zhunan, Taiwan
| | - Hung-Wen Tsai
- Department of Pathology, National Cheng Kung University Hospital, Tainan, Taiwan
| | - Cheng-Pu Sun
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Yi-Hsuan Wu
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Hui-Lin Wu
- Hepatitis Research Centre, National Taiwan University Hospital, Taipei, Taiwan
- Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Yi-Ning Pei
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Kuan-Ying Lu
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Tim Ting-Chung Yen
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Hong-Lin Chan
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, Taiwan
- Department of Medical Science, National Tsing Hua University, Hsinchu, Taiwan
| | - Mi-Hua Tao
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Jun-Yang Liou
- Institute of Cellular and System Medicine, National Health Research Institutes, Zhunan, Taiwan
| | - Margaret Dah-Tsyr Chang
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, Taiwan
- Department of Medical Science, National Tsing Hua University, Hsinchu, Taiwan
| | - Ih-Jen Su
- Department of Biotechnology, Southern Taiwan University of Science and Technology, Tainan, Taiwan
| | - Lily Hui-Ching Wang
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, Taiwan
- Department of Medical Science, National Tsing Hua University, Hsinchu, Taiwan
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19
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Fan CC, Chiu YC, Liu C, Lai WW, Cheng CH, Lin DL, Li GR, Lo YH, Chang CW, Tsai CC, Chang CY. The Impact of the Shallow-Trench Isolation Effect on Flicker Noise of Source Follower MOSFETs in a CMOS Image Sensor. J Nanosci Nanotechnol 2018; 18:4217-4221. [PMID: 29442765 DOI: 10.1166/jnn.2018.15239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The flicker noise of source follower transistors is the dominant noise source in image sensors. This paper reports a systematic study of the shallow trench isolation effect in transistors with different sizes under high temperature conditions that correspond to the quantity of empty defect sites. The effects of shallow trench isolation sidewall defects on flicker noise characteristics are investigated. In addition, the low-frequency noise and subthreshold swing degrade simultaneously in accordance to the device gate width scaling. Both serious subthreshold leakage and considerable noise can be attributed to the high trap density near the STI edge. Consequently, we propose a coincidental relationship between the noise level and the subthreshold characteristic; its trend is identical to the experiments and simulation results.
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Affiliation(s)
- C C Fan
- Department of Electronics Engineering, National Chiao Tung University, Hsinchu City 30010, Taiwan
| | - Y C Chiu
- Department of Electronics Engineering, National Chiao Tung University, Hsinchu City 30010, Taiwan
| | - C Liu
- Department of Electro-Physics, National Chiao Tung University, Hsinchu City 30010, Taiwan
| | - W W Lai
- Department of Electronics Engineering, National Chiao Tung University, Hsinchu City 30010, Taiwan
| | - C H Cheng
- Department of Mechatronic Engineering, National Taiwan Normal University, Taipei, 106, Taiwan
| | - D L Lin
- Himax Technologies, Inc., Tainan City 74148, Taiwan
| | - G R Li
- Himax Technologies, Inc., Tainan City 74148, Taiwan
| | - Y H Lo
- Himax Technologies, Inc., Tainan City 74148, Taiwan
| | - C W Chang
- Himax Technologies, Inc., Tainan City 74148, Taiwan
| | - C C Tsai
- Himax Technologies, Inc., Tainan City 74148, Taiwan
| | - C Y Chang
- Department of Electronics Engineering, National Chiao Tung University, Hsinchu City 30010, Taiwan
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20
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Yen TTC, Yang A, Chiu WT, Li TN, Wang LH, Wu YH, Wang HC, Chen L, Wang WC, Huang W, Chang CW, Chang MDT, Shen MR, Su IJ, Wang LHC. Hepatitis B virus PreS2-mutant large surface antigen activates store-operated calcium entry and promotes chromosome instability. Oncotarget 2018; 7:23346-60. [PMID: 26992221 PMCID: PMC5029631 DOI: 10.18632/oncotarget.8109] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 02/28/2016] [Indexed: 12/14/2022] Open
Abstract
Hepatitis B virus (HBV) is a driver of hepatocellular carcinoma, and two viral products, X and large surface antigen (LHBS), are viral oncoproteins. During chronic viral infection, immune-escape mutants on the preS2 region of LHBS (preS2-LHBS) are gain-of-function mutations that are linked to preneoplastic ground glass hepatocytes (GGHs) and early disease onset of hepatocellular carcinoma. Here, we show that preS2-LHBS provoked calcium release from the endoplasmic reticulum (ER) and triggered stored-operated calcium entry (SOCE). The activation of SOCE increased ER and plasma membrane (PM) connections, which was linked by ER- resident stromal interaction molecule-1 (STIM1) protein and PM-resident calcium release- activated calcium modulator 1 (Orai1). Persistent activation of SOCE induced centrosome overduplication, aberrant multipolar division, chromosome aneuploidy, anchorage-independent growth, and xenograft tumorigenesis in hepatocytes expressing preS2- LHBS. Chemical inhibitions of SOCE machinery and silencing of STIM1 significantly reduced centrosome numbers, multipolar division, and xenograft tumorigenesis induced by preS2-LHBS. These results provide the first mechanistic link between calcium homeostasis and chromosome instability in hepatocytes carrying preS2-LHBS. Therefore, persistent activation of SOCE represents a novel pathological mechanism in HBV-mediated hepatocarcinogenesis.
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Affiliation(s)
- Tim Ting-Chung Yen
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Anderson Yang
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Wen-Tai Chiu
- Department of Biomedical Engineering, National Cheng Kung University, Tainan 701, Taiwan.,Center of Infectious Diseases and Signal Transduction, National Cheng Kung University, Tainan 701, Taiwan
| | - Tian-Neng Li
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Lyu-Han Wang
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Yi-Hsuan Wu
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Hui-Chen Wang
- Institute of Pharmaceutics, Development Center for Biotechnology, Taipei 22180, Taiwan
| | - Linyi Chen
- Institute of Molecular Medicine, National Tsing Hua University, Hsinchu 300, Taiwan.,Department of Medical Science, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Wen-Ching Wang
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Wenya Huang
- Department of Medical Laboratory Science and Biotechnology, National Cheng Kung University, Tainan 701, Taiwan
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Margaret Dah-Tsyr Chang
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 300, Taiwan.,Department of Medical Science, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Meng-Ru Shen
- Center of Infectious Diseases and Signal Transduction, National Cheng Kung University, Tainan 701, Taiwan.,Department of Pharmacology, National Cheng Kung University, Tainan 701, Taiwan
| | - Ih-Jen Su
- Center of Infectious Diseases and Signal Transduction, National Cheng Kung University, Tainan 701, Taiwan.,National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Tainan 704, Taiwan.,Department of Biotechnology, Southern Taiwan University of Science and Technology, Tainan 710, Taiwan
| | - Lily Hui-Ching Wang
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 300, Taiwan.,Department of Medical Science, National Tsing Hua University, Hsinchu 300, Taiwan
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21
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Lin SY, Huang RY, Liao WC, Chuang CC, Chang CW. Multifunctional PEGylated Albumin/IR780/Iron Oxide Nanocomplexes for Cancer Photothermal Therapy and MR Imaging. Nanotheranostics 2018; 2:106-116. [PMID: 29577015 PMCID: PMC5865265 DOI: 10.7150/ntno.19379] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Accepted: 08/25/2017] [Indexed: 11/12/2022] Open
Abstract
A multifunctional albumin/superparamagnetic iron oxide nanoparticle (SPIO) nanocomplex system to deliver IR780, a photothermal agent, for cancer theranostic applications was proposed in this study. Single emulsion method was utilized to fabricate the human albumin/IR780/SPIO (HISP) nanocomplexes with a hydrophobic core (SPIO and IR780) and a hydrophilic shell (human serum albumin (HSA) and poly (ethylene glycol) (PEG)). Effects of PEGylation on the size and surface potential of nanocomplexes were analyzed. Nanospheres containing uniformly dispersed SPIO was observed using Transmission Electron Microscopy (TEM) imaging. As a potential magnetic resonance (MR) imaging agent, the HISP displayed dose-dependent T2-weighted imaging contrast (R2 = 81.6 mM-1s-1). Good colloidal stability was verified from the nanocomplexes under difference circumstances. The nanocomplexes were taken up by cancer cells efficiently and led to significant photothermal-mediated cancer cell death upon short-term near infrared (NIR) irradiation in vitro. Via intravenous injection, PEG-HISP can efficiently deliver IR780 to tumor sites and showed strong photothermal effect compared to free drug on the mice model. Significant tumor suppression by the photothermal treatments using PEG-HISP was demonstrated from the mice CT26 xenograft model. Good safety profile of the PEG-HISP was confirmed from histological examination and liver functional analysis. Taken together, the results suggest that PEG-HISP is a safe and robust nano-theranostic platform for advanced anti-cancer treatment.
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Affiliation(s)
- Ssu-Yu Lin
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan R.O.C
| | - Rih-Yang Huang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan R.O.C
| | - Wei-Chen Liao
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan R.O.C
| | - Chun-Chiao Chuang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan R.O.C
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan R.O.C
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22
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Abstract
Abstract
Tumor-associated macrophages are one of the most abundant infiltrating cells in solid tumors. These cells are originated from the bone marrow and circulating in peripheral blood. Through the specific chemoattractant released by the tumor cells or stromal cells, bone marrow-derived monocytes (BMDMs) are able to accumulate at the tumor site by their corresponding receptors. In this study, we utilized the characteristics of tumor-tropism of BMDMs on a nanoparticle-based drug delivery system. We hypothesized that the cellular membrane of BMDMs can provide nanoparticle protection from the mononuclear phagocyte system and the chemokine receptor on the membrane can enhance the tumor-tropism of the nanoparticles. To prove the hypothesis, the cellular membrane was extracted from BMDMs and then coated on the drug-loaded nanoparticles. We also found that the expression of chemokine receptor CXCR4 on the bone BMDMs can be induced following the stimulation of tumor conditioned medium. The tumor targeting effect of the monocyte membrane-coated nanoparticles is diminished against SDF-1 knockdown tumor cells. These results indicate that the SDF-1/CXCR4 axis is contributed to the tumor-tropism of the monocyte membrane-coated nanoparticles toward astrocytoma cell line, ALTS1C1, and this effect can be boosted by the stimulation of tumor conditioned medium. In conclusion, we established a nanoparticle-based drug delivery platform against brain tumor with the cellular membrane coating technology and maximized the effect of tumor-targeting by tumor conditioned medium stimulation.
Citation Format: Yi-Nan Li, Chien-Wen Chang, Chi-Shiun Chiang. SDF-1/CXCR4 axis-mediated tumor-tropism of monocyte membrane-coated nanoparticles [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 2196. doi:10.1158/1538-7445.AM2017-2196
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Affiliation(s)
- Yi-Nan Li
- National Tsing Hua University, Hsinchu City, Taiwan
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23
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Huang WC, Lu IL, Chiang WH, Lin YW, Tsai YC, Chen HH, Chang CW, Chiang CS, Chiu HC. Tumortropic adipose-derived stem cells carrying smart nanotherapeutics for targeted delivery and dual-modality therapy of orthotopic glioblastoma. J Control Release 2017; 254:119-130. [DOI: 10.1016/j.jconrel.2017.03.035] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 12/30/2016] [Accepted: 03/19/2017] [Indexed: 01/07/2023]
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24
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Wang L, Chen Y, Lin HY, Hou YT, Yang LC, Sun AY, Liu JY, Chang CW, Wan D. Near-IR-Absorbing Gold Nanoframes with Enhanced Physiological Stability and Improved Biocompatibility for In Vivo Biomedical Applications. ACS Appl Mater Interfaces 2017; 9:3873-3884. [PMID: 28071899 DOI: 10.1021/acsami.6b12591] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [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: 06/06/2023]
Abstract
This paper describes the synthesis of near-infrared (NIR)-absorbing gold nanoframes (GNFs) and a systematic study comparing their physiological stability and biocompatibility with those of hollow Au-Ag nanoshells (GNSs), which have been used widely as photothermal agents in biomedical applications because of their localized surface plasmon resonance (LSPR) in the NIR region. The GNFs were synthesized in three steps: galvanic replacement, Au deposition, and Ag dealloying, using silver nanospheres (SNP) as the starting material. The morphology and optical properties of the GNFs were dependent on the thickness of the Au coating layer and the degree of Ag dealloying. The optimal GNF exhibited a robust spherical skeleton composed of a few thick rims, but preserved the distinctive LSPR absorbance in the NIR region-even when the Ag content within the skeleton was only 10 wt %, 4-fold lower than that of the GNSs. These GNFs displayed an attractive photothermal conversion ability and great photothermal stability, and could efficiently kill 4T1 cancer cells through light-induced heating. Moreover, the GNFs preserved their morphology and optical properties after incubation in biological media (e.g., saline, serum), whereas the GNSs were unstable under the same conditions because of rapid dissolution of the considerable silver content with the shell. Furthermore, the GNFs had good biocompatibility with normal cells (e.g., NIH-3T3 and hepatocytes; cell viability for both cells: >90%), whereas the GNSs exhibited significant dose-dependent cytotoxicity (e.g., cell viability for hepatocytes at 1.14 nM: ca. 11%), accompanied by the induction of reactive oxygen species. Finally, the GNFs displayed good biocompatibility and biosafety in an in vivo mouse model; in contrast, the accumulation of GNSs caused liver injury and inflammation. Our results suggest that GNFs have great potential to serve as stable, biocompatible NIR-light absorbers for in vivo applications, including cancer detection and combination therapy.
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Affiliation(s)
| | | | - Hsin Yao Lin
- Department of Neurosurgery, MacKay Memorial Hospital , Taipei, Taiwan 104
| | - Yung-Te Hou
- Department of Bio-Industrial Mechatronics Engineering, National Taiwan University , Taipei, Taiwan 10617
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25
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Huang SH, Law CH, Kuo PH, Hu RY, Yang CC, Chung TW, Li JM, Lin LH, Liu YC, Liao EC, Tsai YT, Wei YS, Lin CC, Chang CW, Chou HC, Wang WC, Chang MDT, Wang LH, Kung HJ, Chan HL, Lyu PC. Retraction: MMP-13 is involved in oral cancer cell metastasis. Oncotarget 2016; 7:48851. [PMID: 27885991 PMCID: PMC5217056 DOI: 10.18632/oncotarget.10823] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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26
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Lin CJ, Kuan CH, Wang LW, Wu HC, Chen Y, Chang CW, Huang RY, Wang TW. Integrated self-assembling drug delivery system possessing dual responsive and active targeting for orthotopic ovarian cancer theranostics. Biomaterials 2016; 90:12-26. [DOI: 10.1016/j.biomaterials.2016.03.005] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 02/25/2016] [Accepted: 03/01/2016] [Indexed: 01/12/2023]
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27
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Hsu HC, Tan CD, Chang CW, Chu CW, Chiu YC, Pan CJ, Huang HM. Evaluation of nasal patency by visual analogue scale/nasal obstruction symptom evaluation questionnaires and anterior active rhinomanometry after septoplasty: a retrospective one-year follow-up cohort study. Clin Otolaryngol 2016; 42:53-59. [PMID: 27102375 DOI: 10.1111/coa.12662] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/11/2016] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To assess the efficacy of septoplasty and the correlation between the subjective evaluations of a visual analogue scale (VAS) and the Nasal Obstruction Symptom Evaluation (NOSE) questionnaire and active anterior rhinomanometry of the nasal airway after septoplasty. DESIGN A retrospective, individual cohort study. SETTING Ear, Nose and Throat Department, Taipei City Hospital, Taipei, Taiwan. PARTICIPANTS Fifty patients with chronic nasal obstruction were enrolled in the study. All 50 patients underwent septoplasty because of nasal septal deviation. Another 28 patients without nasal symptoms served as controls. MAIN OUTCOME MEASURES VAS, NOSE and active anterior rhinomanometry were used to measure the sensation of nasal obstruction. All measurements were performed in both groups preoperatively and then repeated on three postoperative visits (3, 6 and 12 months). RESULTS The mean VAS score, NOSE score and the nasal resistance in the narrow side of the nose in the study group showed reduced symptoms at 3, 6 and 12 months postoperatively compared with the respective preoperative measurements (P < 0.001, all). The VAS and NOSE scores did not significantly correlate with total nasal resistance preoperatively or postoperatively. The VAS and nasal resistance in the obstructed nasal cavity correlated significantly preoperatively (P < 0.05), but not postoperatively. CONCLUSIONS The subjective and objective symptoms of nasal obstruction had improved 1 year after septoplasty. A significant correlation between VAS scores and nasal resistance in the narrow side of the nose was found before surgery. The subjective and objective measurements of nasal obstruction lacked significant correlation postoperatively.
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Affiliation(s)
- H C Hsu
- Department of Otolaryngology, Taipei City Hospital, Taipei, Taiwan
| | - C D Tan
- Department of Otolaryngology, School of Medicine, College of Medicine, Taiwan National University, Taipei, Taiwan
| | - C W Chang
- Department of Otolaryngology, Taipei City Hospital, Taipei, Taiwan
| | - C W Chu
- Department of Otolaryngology, Taipei City Hospital, Taipei, Taiwan
| | - Y C Chiu
- Department of Otolaryngology, Taipei City Hospital, Taipei, Taiwan
| | - C J Pan
- Department of Otolaryngology, Taipei City Hospital, Taipei, Taiwan
| | - H M Huang
- Department of Otolaryngology, Taipei City Hospital, Taipei, Taiwan.,Department of Otolaryngology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
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28
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Huang SH, Law CH, Kuo PH, Hu RY, Yang CC, Chung TW, Li JM, Lin LH, Liu YC, Liao EC, Tsai YT, Wei YS, Lin CC, Chang CW, Chou HC, Wang WC, Chang MDT, Wang LH, Kung HJ, Chan HL, Lyu PC. MMP-13 is involved in oral cancer cell metastasis. Oncotarget 2016; 7:17144-61. [PMID: 26958809 PMCID: PMC4941377 DOI: 10.18632/oncotarget.7942] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 12/31/1969] [Indexed: 12/20/2022] Open
Abstract
The oral cancer cell line OC3-I5 with a highly invasive ability was selected and derived from an established OSCC line OC3. In this study, we demonstrated that matrix metalloproteinases protein MMP-13 was up-regulated in OC3-I5 than in OC3 cells. We also observed that expression of epithelial-mesenchymal transition (EMT) markers including Twist, p-Src, Snail1, SIP1, JAM-A, and vinculin were increased in OC3-I5 compared to OC3 cells, whereas E-cadherin expression was decreased in the OC3-I5 cells. Using siMMP-13 knockdown techniques, we showed that siMMP-13 not only reduced the invasion and migration, but also the adhesion abilities of oral cancer cells. In support of the role of MMP-13 in metastasis, we used MMP-13 expressing plasmid-transfected 293T cells to enhance MMP-13 expression in the OC3 cells, transplanting the MMP-13 over expressing OC3 cells into nude mice led to enhanced lung metastasis. In summary, our findings show that MMP-13 promotes invasion and metastasis in oral cancer cells, suggesting altered expression of MMP-13 may be utilized to impede the process of metastasis.
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Affiliation(s)
- Shun-Hong Huang
- Department of Medical Sciences and Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Ching-Hsuan Law
- Department of Medical Sciences and Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Ping-Hsueh Kuo
- Department of Medical Sciences and Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Ren-Yu Hu
- Department of Medical Sciences and Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Ching-Chieh Yang
- Department of Radiation Oncology, Chi-Mei Medical Center, Tainan, Taiwan.,Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Ting-Wen Chung
- Department of Medical Sciences and Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Ji-Min Li
- Department of Medical Sciences and Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Li-Hsun Lin
- Department of Medical Sciences and Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Yi-Chung Liu
- Department of Medical Sciences and Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, Taiwan.,Institute of Population Sciences, National Health Research Institutes, Miaoli County, Taiwan
| | - En-Chi Liao
- Department of Medical Sciences and Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Yi-Ting Tsai
- Department of Medical Sciences and Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Yu-Shan Wei
- Department of Medical Sciences and Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Chi-Chen Lin
- Institute of Biomedical Science, National Chung Hsing University, Taichung, Taiwan.,Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung, Taiwan.,Department of Medical Research and Education, Taichung Veterans General Hospital, Taichung, Taiwan.,Division of Chest Medicine. Department of Internal Medicine, Changhua Christian Hospital, Changhua, Taiwan
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Taiwan
| | - Hsiu-Chuan Chou
- Department of Applied Science, National Hsinchu University of Education, Hsinchu, Taiwan
| | - Wen-Ching Wang
- Department of Medical Sciences and Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Margaret Dah-Tsyr Chang
- Department of Medical Sciences and Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Lu-Hai Wang
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli County, Taiwan
| | - Hsing-Jien Kung
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Miaoli County, Taiwan
| | - Hong-Lin Chan
- Department of Medical Sciences and Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, Taiwan.,Department of Medical Sciences and Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, Taiwan
| | - Ping-Chiang Lyu
- Department of Medical Sciences and Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, Taiwan.,Department of Medical Sciences and Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, Taiwan
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29
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Wu YF, Wu HC, Kuan CH, Lin CJ, Wang LW, Chang CW, Wang TW. Multi-functionalized carbon dots as theranostic nanoagent for gene delivery in lung cancer therapy. Sci Rep 2016; 6:21170. [PMID: 26880047 PMCID: PMC4754752 DOI: 10.1038/srep21170] [Citation(s) in RCA: 112] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 01/18/2016] [Indexed: 12/22/2022] Open
Abstract
Theranostics, an integrated therapeutic and diagnostic system, can simultaneously monitor the real-time response of therapy. Different imaging modalities can combine with a variety of therapeutic moieties in theranostic nanoagents. In this study, a multi-functionalized, integrated theranostic nanoagent based on folate-conjugated reducible polyethylenimine passivated carbon dots (fc-rPEI-Cdots) is developed and characterized. These nanoagents emit visible blue photoluminescence under 360 nm excitation and can encapsulate multiple siRNAs (EGFR and cyclin B1) followed by releasing them in intracellular reductive environment. In vitro cell culture study demonstrates that fc-rPEI-Cdots is a highly biocompatible material and a good siRNA gene delivery carrier for targeted lung cancer treatment. Moreover, fc-rPEI-Cdots/pooled siRNAs can be selectively accumulated in lung cancer cells through receptor mediated endocytosis, resulting in better gene silencing and anti-cancer effect. Combining bioimaging of carbon dots, stimulus responsive property, gene silencing strategy, and active targeting motif, this multi-functionalized, integrated theranostic nanoagent may provide a useful tool and platform to benefit clinicians adjusting therapeutic strategy and administered drug dosage in real time response by monitoring the effect and tracking the development of carcinomatous tissues in diagnostic and therapeutic aspects.
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Affiliation(s)
- Yu-Fen Wu
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, Taiwan
| | - Hsi-Chin Wu
- Department of Material Engineering, Tatung University, Taipei, Taiwan
| | - Chen-Hsiang Kuan
- Department of Plastic Surgery, National Taiwan University Hospital, Taipei, Taiwan
| | - Chun-Jui Lin
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, Taiwan
| | - Li-Wen Wang
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Tzu-Wei Wang
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan
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30
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Huang WC, Shen MY, Chen HH, Lin SC, Chiang WH, Wu PH, Chang CW, Chiang CS, Chiu HC. Monocytic delivery of therapeutic oxygen bubbles for dual-modality treatment of tumor hypoxia. J Control Release 2015; 220:738-50. [DOI: 10.1016/j.jconrel.2015.09.016] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 08/31/2015] [Accepted: 09/09/2015] [Indexed: 01/24/2023]
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31
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Lee KCJ, Chen YH, Lin HY, Cheng CC, Chen PY, Wu TY, Shih MH, Wei KH, Li LJ, Chang CW. Plasmonic Gold Nanorods Coverage Influence on Enhancement of the Photoluminescence of Two-Dimensional MoS2 Monolayer. Sci Rep 2015; 5:16374. [PMID: 26576041 PMCID: PMC4647184 DOI: 10.1038/srep16374] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Accepted: 10/13/2015] [Indexed: 01/24/2023] Open
Abstract
The 2-D transition metal dichalcogenide (TMD) semiconductors, has received great attention due to its excellent optical and electronic properties and potential applications in field-effect transistors, light emitting and sensing devices. Recently surface plasmon enhanced photoluminescence (PL) of the weak 2-D TMD atomic layers was developed to realize the potential optoelectronic devices. However, we noticed that the enhancement would not increase monotonically with increasing of metal plasmonic objects and the emission drop after the certain coverage. This study presents the optimized PL enhancement of a monolayer MoS2 in the presence of gold (Au) nanorods. A localized surface plasmon wave of Au nanorods that generated around the monolayer MoS2 can provide resonance wavelength overlapping with that of the MoS2 gain spectrum. These spatial and spectral overlapping between the localized surface plasmon polariton waves and that from MoS2 emission drastically enhanced the light emission from the MoS2 monolayer. We gave a simple model and physical interpretations to explain the phenomena. The plasmonic Au nanostructures approach provides a valuable avenue to enhancing the emitting efficiency of the 2-D nano-materials and their devices for the future optoelectronic devices and systems.
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Affiliation(s)
- Kevin C J Lee
- Research Center of Applied Sciences (RCAS), Academia Sinica, Taipei, 11529, Taiwan
| | - Yi-Huan Chen
- Research Center of Applied Sciences (RCAS), Academia Sinica, Taipei, 11529, Taiwan
| | - Hsiang-Yu Lin
- Research Center of Applied Sciences (RCAS), Academia Sinica, Taipei, 11529, Taiwan.,Department of Photonics, National Chiao Tung University (NCTU), Hsinchu, 30010, Taiwan
| | - Chia-Chin Cheng
- Department of Materials Science &Engineering, National Chiao Tung University Hsinchu, 30010, Taiwan
| | - Pei-Ying Chen
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University (NTHU), Hsinchu, 30013, Taiwan
| | - Ting-Yi Wu
- Research Center of Applied Sciences (RCAS), Academia Sinica, Taipei, 11529, Taiwan.,Department of Photonics, National Chiao Tung University (NCTU), Hsinchu, 30010, Taiwan
| | - Min-Hsiung Shih
- Department of Photonics, National Chiao Tung University (NCTU), Hsinchu, 30010, Taiwan.,Department of Photonics, National Sun Yat-sen University, Kaohsiung, 804, Taiwan
| | - Kung-Hwa Wei
- Department of Materials Science &Engineering, National Chiao Tung University Hsinchu, 30010, Taiwan
| | - Lain-Jong Li
- Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University (NTHU), Hsinchu, 30013, Taiwan
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32
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Hsieh CC, Kang ST, Lin YH, Ho YJ, Wang CH, Yeh CK, Chang CW. Biomimetic Acoustically-Responsive Vesicles for Theranostic Applications. Am J Cancer Res 2015; 5:1264-74. [PMID: 26379791 PMCID: PMC4568453 DOI: 10.7150/thno.11848] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Accepted: 07/05/2015] [Indexed: 12/22/2022] Open
Abstract
In recent years, biomimetic cell membrane-derived particles have emerged as a new class of drug delivery system with advantages of biocompatibility, ease of isolation and long circulation profile. Here we report the development and potential theranostic applications of a new biomimetic acoustically-responsive droplet system derived from mammalian red blood cell membrane (RBCM). We hypothesized that drug-loaded RBCM droplets (RBCMDs) would undergo a transition from liquid (droplets) to gas (bubbles) upon high intensity focused ultrasound (HIFU) insonation, resulting in on-demand drug release. The generated microbubbles could also serve as a contrast agent to enhance ultrasound imaging. As-synthesized RBCMDs exhibited uniform size, good dispersity and preservation of RBCM-associated proteins that prevented uptake by macrophages. Camptothecin (CPT), an anti-cancer drug, was successfully loaded in the RBCMDs with a loading efficiency of 2-3% and an encapsulation efficiency of 62-97%. A short (3 min) exposure to HIFU irradiation triggered release of CPT from the RBCMDs and the physical explosion of droplets damaged nearby cancer cells resulting in significant cell death. In addition, the acoustically vaporized RBCMDs significantly increased the ultrasound echo signal to 30 dB. Lastly, we demonstrated that RBCMDs could be acoustically vaporized in vivo in target tissues, and enhancing ultrasound imaging. Taken together, we have developed a new class of naturally derived RBCMDs which show great potential for future application in remotely triggered drug delivery and ultrasound imaging enhancement.
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33
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Wang SH, Chang CW, Chou HC. 5-Methoxytryptophan-dependent inhibition of oral squamous cell carcinoma metastasis. Electrophoresis 2015; 36:2027-34. [PMID: 26171676 DOI: 10.1002/elps.201500154] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 02/16/2015] [Revised: 04/09/2015] [Accepted: 04/30/2015] [Indexed: 12/14/2022]
Abstract
The metastatic status of oral cancer is highly associated with the overall survival rate of patients. Previous studies have revealed that the endogenous tryptophan metabolite 5-methoxytryptophan (5-MTP) can downregulate cyclooxygenase-2 expression; suppress tumor proliferation, migration, and invasion; and reduce the tumor size. To improve the understanding of the molecular mechanisms involved in the regulation of 5-MTP in the tumorigenesis of oral cancer, we conducted a comparative wound healing and transwell invasion assays. Our results revealed that 5-MTP reduce oral cancer cell migration and invasion ability. In addition, the results of an in vivo assay demonstrated that the growth of primary tumors was significantly inhibited by 5-MTP in OC3 oral cancer cells and in invasive OC3-I5 oral cancer cells. Moreover, enlarged spleens were observed in OC3-I5-implanted severe combined immunodeficiency mice although 5-MTP can inhibit spleen enlargement. Through comparative proteomics, we identified 32 differentially regulated protein spots by using 2D-DIGE/MALDI-TOF MS analyses. Some of the differentially regulated proteins such as amadillo-repeat-containing X-linked protein 1, phosphoglycerate kinase 1, tropomyosin alpha-1, and tropomyosin alpha-4 may be associated with the 5-MTP-dependent inhibition of oral cancer growth and metastasis. We conclude that 5-MTP plays a crucial role in inhibiting in vitro and in vivo cancer invasion and metastasis.
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Affiliation(s)
- Ssu-Han Wang
- Department of Applied Science, National Hsinchu University of Education, Hsinchu, Taiwan
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Taiwan
| | - Hsiu-Chuan Chou
- Department of Applied Science, National Hsinchu University of Education, Hsinchu, Taiwan
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Huang RY, Chiang PH, Hsiao WC, Chuang CC, Chang CW. Redox-Sensitive Polymer/SPIO Nanocomplexes for Efficient Magnetofection and MR Imaging of Human Cancer Cells. Langmuir 2015; 31:6523-6531. [PMID: 25989343 DOI: 10.1021/acs.langmuir.5b01208] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Magnetofection has received increasing attention for its great potential on gene therapy. To promote its clinical therapeutic applications, development of safe and effective magnetic nanocarriers is in high demand. Herein, we present a redox-sensitive polymer/metal nanocomplex system (PSPIO) for efficient magnetofection and magnet resonance imaging (MRI) on cancer cells. PSPIO was prepared by modifying SPIO with redox-sensitive polyethylenimine (SSPEI) via a ligand exchange process. PSPIO could efficiently condense plasmid DNA (pDNA) into nanoparticles, which exhibited several favorable properties for gene delivery, including protection of nucleic acids from enzymatic degradation, stable colloids in serum, and redox-responsive pDNA release. As a potential MR imaging agent, PSPIO displayed good magnetization (28.3 emu/g) and dose-dependent T2-weighted imaging contrast (R2 = 291.1 s(-1) mM(-1)) in vitro. The use of redox-sensitive SSPEI polymer contributed to much lower cytotoxicity of PSPIO compared to nondegradable bPEI25k. In vitro transfection efficiency of PSPIO was significantly enhanced under an external magnetic field. In the presence of serum, PSPIO exhibited higher transgene expression than SSPEI or bPEI25k polymer on mouse glioma (ALTS1C1) or human prostate cancer (PC3) cell lines. Taken together, it is demonstrated that PSPIO possess great potential for cancer gene therapy and molecular imaging.
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Affiliation(s)
- Rih-Yang Huang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Pin-Hsin Chiang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Wei-Chen Hsiao
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Chun-Chiao Chuang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, 30013, Taiwan
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Chuang CC, Chang CW. Complexation of bioreducible cationic polymers with gold nanoparticles for improving stability in serum and application on nonviral gene delivery. ACS Appl Mater Interfaces 2015; 7:7724-7731. [PMID: 25764067 DOI: 10.1021/acsami.5b00732] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [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: 06/04/2023]
Abstract
Widespread applications of conventional polymeric gene carriers are greatly hampered by their inefficient transfection performance under serum-containing environment. Aiming to overcome this limitation, we propose a bioreducible polyethylenimine-gold nanocomplex system (SSPEI-Au NC), which can be prepared by a simple layer-by-layer (LBL) assembly procedure. SSPEI-Au NC contains sequentially deposited layers of bioreducible polyethylenimine (SSPEI) and poly(γ-glutamic acid) (γ-PGA) for efficient binding and delivery of plasmid DNA (pDNA). SSPEI-Au NC was characterized for various physicochemical properties, including: UV-vis spectra, TEM imaging, hydrodynamic size, and pDNA binding ability. The SSPEI-Au NC were efficiently uptaken by mammalian cells as observed using dark-field microscopy. Comparing to nondegradable PEI25k, the bioreducible SSPEI-Au NC exhibited superior transfection capability under serum-containing condition while causing lower cytotoxicity on mammalian cell lines. The effect of serum on SSPEI-Au NC dispersity was studied using UV-vis spectrometry and the results suggest that serum-assisted colloidal stability of SSPEI-Au NC contributed to its serum-resistant transfection.
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Affiliation(s)
- Chun-Chiao Chuang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
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Kuo MH, Lai WT, Hsu TM, Chen YC, Chang CW, Chang WH, Li PW. Designer germanium quantum dot phototransistor for near infrared optical detection and amplification. Nanotechnology 2015; 26:055203. [PMID: 25590411 DOI: 10.1088/0957-4484/26/5/055203] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We demonstrated a unique CMOS approach for the production of a high-performance germanium (Ge) quantum dot (QD) metal-oxide-semiconductor phototransistor. In the darkness, low off-state leakage (Ioff ∼ 0.27 pA μm(-2)), a high on-off current ratio (Ion/Ioff ∼ 10(6)), and good switching behaviors (subthreshold swing of 175 mV/dec) were measured on our Ge-QD phototransistor at 300 K, indicating good hetero-interfacial quality of the Ge-on-Si. Illumination makes a significant enhancement in the drain current of Ge QD phototransistors when biased at both the on- and off-states, which is a great benefit from Ge QD-mediated photoconductive and photovoltaic effects. The measured photocurrent-to-dark-current ratio (Iphoto/Idark) and the photoresponsivities from the Ge QD phototransistor are as high as 4.1 × 10(6) and 1.7 A W(-1), respectively, under an incident power of 0.9 mW at 850 nm illumination. A superior external quantum efficiency of 240% and a very fast temporal response time of 1.4 ns suggest that our Ge QD MOS phototransistor offers great promise as optical switches and transducers for Si-based optical interconnects.
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Affiliation(s)
- M H Kuo
- Department of Electrical Engineering and Center for Nano Science and Technology, National Central University, ChungLi, Taiwan, 32001, People's Republic of China
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Huang FYJ, Lee TW, Chang CH, Chen LC, Hsu WH, Chang CW, Lo JM. Evaluation of 188Re-labeled PEGylated nanoliposome as a radionuclide therapeutic agent in an orthotopic glioma-bearing rat model. Int J Nanomedicine 2015; 10:463-73. [PMID: 25624760 PMCID: PMC4296959 DOI: 10.2147/ijn.s75955] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
PURPOSE In this study, the (188)Re-labeled PEGylated nanoliposome ((188)Re-liposome) was prepared and evaluated as a therapeutic agent for glioma. MATERIALS AND METHODS The reporter cell line, F98(luc) was prepared via Lentivector expression kit system and used to set up the orthotopic glioma-bearing rat model for non-invasive bioluminescent imaging. The maximum tolerated dose applicable in Fischer344 rats was explored via body weight monitoring of the rats after single intravenous injection of (188)Re-liposome with varying dosages before the treatment study. The OLINDA/EXM 1.1 software was utilized for estimating the radiation dosimetry. To assess the therapeutic efficacy, tumor-bearing rats were intravenously administered (188)Re-liposome or normal saline followed by monitoring of the tumor growth and animal survival time. In addition, the histopathological examinations of tumors were conducted on the (188)Re-liposome-treated rats. RESULTS By using bioluminescent imaging, the well-established reporter cell line (F98(luc)) showed a high relationship between cell number and its bioluminescent intensity (R(2)=0.99) in vitro; furthermore, it could also provide clear tumor imaging for monitoring tumor growth in vivo. The maximum tolerated dose of (188)Re-liposome in Fischer344 rats was estimated to be 333 MBq. According to the dosimetry results, higher equivalent doses were observed in spleen and kidneys while very less were in normal brain, red marrow, and thyroid. For therapeutic efficacy study, the progression of tumor growth in terms of tumor volume and/or tumor weight was significantly slower for the (188)Re-liposome-treated group than the control group (P<0.05). As a result, the lifespan of glioma-bearing rats treated with (188)Re-liposome was prolonged 10.67% compared to the control group. CONCLUSION The radiotherapeutic evaluation by dosimetry and survival studies have demonstrated that passive targeting (188)Re-liposome via systemic administration can significantly prolong the lifespan of orthotopic glioma-bearing rats while maintaining reasonable systemic radiation safety. Therefore, (188)Re-liposome could be a potential therapeutic agent for glioblastoma multiforme treatment.
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Affiliation(s)
- Feng-Yun J Huang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Te-Wei Lee
- Institute of Nuclear Energy Research, Longtan, Taiwan
| | | | | | - Wei-Hsin Hsu
- Institute of Nuclear Energy Research, Longtan, Taiwan
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Jem-Mau Lo
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
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Abstract
In this study, for the first time, stem cell membrane (STM)-camouflaged superparamagnetic iron oxide nanoparticles (SPIO NPs) were prepared and investigated for potential theranostic applications.
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Affiliation(s)
- Pei-Ying Lai
- Department of Biomedical Engineering & Environmental Sciences
- National Tsing Hua University
- Hsinchu
- Taiwan
| | - Rih-Yang Huang
- Department of Biomedical Engineering & Environmental Sciences
- National Tsing Hua University
- Hsinchu
- Taiwan
| | - Ssu-Yu Lin
- Department of Biomedical Engineering & Environmental Sciences
- National Tsing Hua University
- Hsinchu
- Taiwan
| | - Yee-Hsien Lin
- Department of Biomedical Engineering & Environmental Sciences
- National Tsing Hua University
- Hsinchu
- Taiwan
| | - Chien-Wen Chang
- Department of Biomedical Engineering & Environmental Sciences
- National Tsing Hua University
- Hsinchu
- Taiwan
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Chen MH, Liu PC, Chang CW, Chen YA, Chen MH, Liu CY, Leu CM, Lin HY. Decoy receptor 3 suppresses B cell functions and has a negative correlation with disease activity in rheumatoid arthritis. Clin Exp Rheumatol 2014; 32:715-723. [PMID: 25084482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2013] [Accepted: 04/29/2014] [Indexed: 06/03/2023]
Abstract
OBJECTIVES The decoy receptor 3 (DcR3) is a member of the tumour necrosis factor (TNF) receptor superfamily and may regulate inflammation. The aim of this study was to investigate the role of DcR3 in B cell functions and its correlation to disease activity in patients with rheumatoid arthritis (RA). METHODS The concentrations of DcR3 and TNF-α were measured by ELISA. B cell proliferation was assessed by quantification of 3H-thymidine uptake. Staphylococcus aureus Cowan (SAC) strain were used to stimulate B cell proliferation and TNF-α production. RESULTS Compared to the osteoarthritis (OA) patients, the RA group had higher synovial DcR3 levels (3273.6±1623.2 vs. 1594.8±1190.0 pg/ml, p=0.003), which were negatively correlated with the serum erythrocyte sedimentation rate and Disease Activity Score using 28 joint counts (DAS28) scores (r=-0.560, p=0.002; r=-0.579, p<0.001, respectively). Although the RA B cells have more active characteristics, B cell proliferation induced by SAC was successfully suppressed by recombinant DcR3.Fc fusion protein with an average inhibition of 44.8%. Moreover, DcR3.Fc fusion protein was found to suppress SAC-induced TNF-α production by B cells in 8 RA patients (average inhibition 47.0%). CONCLUSIONS The results of our study indicated that the inhibition of B cell functions by DcR3 may partially explain the negative correlation between DcR3 level and disease activity in RA patients. Our findings imply that DcR3 may be used as a biomarker for disease activity and a potential therapeutic agent in the treatment of RA.
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Affiliation(s)
- Ming-Han Chen
- Department of Medicine, National Yang-Ming University Hospital, Taiwan.
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Lee MF, Chang CW, Wang NM, Lin SJ, Chen YH. Serine protease inhibitor gabexate mesilate attenuates american cockroach-induced bronchial damage and inflammatory cytokine release. J Investig Allergol Clin Immunol 2014; 24:338-345. [PMID: 25345304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
BACKGROUND AND OBJECTIVE Allergic airway diseases are not only a T,2-mediated chronic airway inflammation, but also a condition of epithelial barrier defects and dysfunction. Allergens with protease activities are known factors that initiate respiratory epithelial damage. Cockroach allergy is the second leading cause of allergic respiratory airway diseases in Taiwan, and cockroach allergens have strong serine protease activity. This study aimed to determine the protective effect of the direct local administration of gabexate mesilate (GM) on American cockroach allergen (CraA)-induced human bronchial epithelial cell inflammation. METHODS BEAS-2B cells, from the human bronchial epithelial cell line, were stimulated with CraA or co-cultured with different doses of GM. Cellular morphologic changes were observed by microscopy and changes in chemokine mRNA expression and protein levels were determined by semi-quantitative reverse transcription-polymerase chain reaction (RT-PCR) and ELISA. Effects of specific inhibitors of ERK1/2 (U0126), INK (SP600125), and p38 MAPK (SB203580) on CraA-induced chemokine mRNA expression were also tested by RT-PCR. RESULTS GM prevented CraA-induced bronchial epithelial cell detachment and morphological changes. It had superior and more extensive suppression effects than specific target MAPK inhibitors in CraA-induced mRNA expression of IL-8, monocyte chemotactic protein (MCP) 1, chemokine (C-C motif) ligand 20, and granulocyte-macrophage colony-stimulating factor from the cells in a dose-dependent manner. CraA-induced IL-8 and MCP-1 protein production from BEAS-2B cells was also attenuated by GM. CONCLUSIONS The serine protease inhibitor GM has local protective effects against CraA-induced bronchial epithelial inflammation. The development of an inhaled or intranasal protease inhibitor may be a potential strategy for the treatment of allergic airway diseases induced by allergens with protease activities.
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Chiang WH, Huang WC, Chang CW, Shen MY, Shih ZF, Huang YF, Lin SC, Chiu HC. Functionalized polymersomes with outlayered polyelectrolyte gels for potential tumor-targeted delivery of multimodal therapies and MR imaging. J Control Release 2013; 168:280-8. [PMID: 23562635 DOI: 10.1016/j.jconrel.2013.03.029] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Revised: 01/22/2013] [Accepted: 03/10/2013] [Indexed: 10/27/2022]
Abstract
A novel tumor-targeting polymersome carrier system capable of delivering magnetic resonance imaging (MRI) and chemotherapy is presented in this study. The doxorubicin (DOX)-loaded magnetic polymersomes were first attained by the self-assembly of lipid-containing copolymer, poly(acrylic acid-co-distearin acrylate), in aqueous solution containing citric acid-coated superparamagnetic iron oxide nanoparticles (SPIONs), and followed by DOX loading via electrostatic attraction. To further functionalize these artificial vesicles with superior in vivo colloidal stability, pH-tunable drug release and active tumor-targeting, chitosan and poly(γ-glutamic acid-co-γ-glutamyl oxysuccinimide)-g-poly(ethyleneglycol)-folate (FA) were deposited in sequence onto the assembly outer surfaces. The interfacial nanogel layers via complementary electrostatic interactions and in-situ covalent cross-linking were thus produced. These nanogel-caged polymersomes (NCPs) show excellent anti-dilution and serum proteins-repellent behaviors. Triggerable release of the encapsulated DOX was governed by dual external stimuli, pH and temperature. When these theranostic NCPs were effectively internalized by HeLa cells via FA receptor-mediated endocytosis and then exposed to high frequency magnetic fields (HFMF), the combined effects of both pH and magnetic hyperthermia-triggered drug release and thermo-therapy resulted in greater cytotoxicity than the treatment by DOX alone. By virtue of the SPION clustering effect in the assembly inner aqueous compartments, the SPION/DOX-loaded NCPs displayed an r₂ relaxivity value (255.2 F emM⁻¹ S⁻¹) higher than Resovist (183.4 F emM⁻¹ S⁻¹), a commercial SPION-based T₂ contrast agent. The high magnetic relaxivity of the tumor-targeting NCPs coupled with their enhanced cellular uptake considerably promoted the MRI contrast of targeted cancer cells. These results demonstrate the great potential of the FA-decorated SPION/DOX-loaded NCPs as an advanced cancer theranostic nanodevice.
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Affiliation(s)
- Wen-Hsuan Chiang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300, Taiwan
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Chang CW, Hwang Y, Brafman D, Hagan T, Phung C, Varghese S. Engineering cell-material interfaces for long-term expansion of human pluripotent stem cells. Biomaterials 2012; 34:912-21. [PMID: 23131532 DOI: 10.1016/j.biomaterials.2012.10.020] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2012] [Accepted: 10/08/2012] [Indexed: 01/29/2023]
Abstract
Cost-effective and scalable synthetic matrices that support long-term expansion of human pluripotent stem cells (hPSCs) have many applications, ranging from drug screening platforms to regenerative medicine. Here, we report the development of a hydrogel-based matrix containing synthetic heparin-mimicking moieties that supports the long-term expansion of hPSCs (≥20 passages) in a chemically defined medium. HPSCs expanded on this synthetic matrix maintained their characteristic morphology, colony forming ability, karyotypic stability, and differentiation potential. We also used the synthetic matrix as a platform to investigate the effects of various physicochemical properties of the extracellular environment on the adhesion, growth, and self-renewal of hPSCs. The observed cellular responses can be explained in terms of matrix interface-mediated binding of extracellular matrix proteins, growth factors, and other cell-secreted factors, which create an instructive microenvironment to support self-renewal of hPSCs. These synthetic matrices, which comprise of "off-the-shelf" components and are easy to synthesize, provide an ideal tool to elucidate the molecular mechanisms that control stem cell fate.
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Affiliation(s)
- Chien-Wen Chang
- Department of Bioengineering, University of California, San Diego, La Jolla, CA 92093, USA
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Huang ZM, Kang JK, Chen CY, Tseng TH, Chang CW, Chang YC, Tai SK, Hsieh SL, Leu CM. Decoy Receptor 3 Suppresses TLR2-Mediated B Cell Activation by Targeting NF-κB. J I 2012; 188:5867-76. [DOI: 10.4049/jimmunol.1102516] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Chang CW, Chang CW, Wang HY, Chen MJ, Lin SC, Chang WH, Lee JJ. Intermittent small-bowel obstruction due to a mobile bezoar diagnosed with single-balloon enteroscopy. Endoscopy 2012; 43 Suppl 2 UCTN:E297. [PMID: 21915835 DOI: 10.1055/s-0030-1256470] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- C W Chang
- Division of Gastroenterology, Department of Internal Medicine, Mackay Memorial Hospital, Taipei, Taiwan
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Hunter GW, Xu JC, Biaggi-Labiosa AM, Laskowski D, Dutta PK, Mondal SP, Ward BJ, Makel DB, Liu CC, Chang CW, Dweik RA. Smart sensor systems for human health breath monitoring applications. J Breath Res 2011; 5:037111. [PMID: 21896970 DOI: 10.1088/1752-7155/5/3/037111] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Breath analysis techniques offer a potential revolution in health care diagnostics, especially if these techniques can be brought into standard use in the clinic and at home. The advent of microsensors combined with smart sensor system technology enables a new generation of sensor systems with significantly enhanced capabilities and minimal size, weight and power consumption. This paper discusses the microsensor/smart sensor system approach and provides a summary of efforts to migrate this technology into human health breath monitoring applications. First, the basic capability of this approach to measure exhaled breath associated with exercise physiology is demonstrated. Building from this foundation, the development of a system for a portable asthma home health care system is described. A solid-state nitric oxide (NO) sensor for asthma monitoring has been identified, and efforts are underway to miniaturize this NO sensor technology and integrate it into a smart sensor system. It is concluded that base platform microsensor technology combined with smart sensor systems can address the needs of a range of breath monitoring applications and enable new capabilities for healthcare.
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Affiliation(s)
- G W Hunter
- NASA Glenn Research Center, Cleveland, OH, USA.
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Zhang C, Sangaj N, Hwang Y, Phadke A, Chang CW, Varghese S. Oligo(trimethylene carbonate)-poly(ethylene glycol)-oligo(trimethylene carbonate) triblock-based hydrogels for cartilage tissue engineering. Acta Biomater 2011; 7:3362-9. [PMID: 21664305 DOI: 10.1016/j.actbio.2011.05.024] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2011] [Revised: 05/16/2011] [Accepted: 05/20/2011] [Indexed: 12/20/2022]
Abstract
A triblock co-polymer of oligo(trimethylene carbonate)-block-poly(ethylene glycol) 20000-block-oligo(trimethylene carbonate) diacrylate (TMC20) was used as a photo-polymerizable precursor for the encapsulation of primary articular chondrocytes. The efficacy of TMC20 as a biodegradable scaffold for cartilage tissue engineering was compared with non-degradable poly(ethylene glycol) 20000 diacrylate (PEG20) hydrogel. Chondrocytes encapsulated in PEG hydrogels containing oligo(trimethylene carbonate) (OTMC) moieties underwent spontaneous aggregation during in vitro culture, which was not observed in the PEG hydrogel counterparts. The aggregation of cells was found to be dependent on the initial cell density, as well as the mesh size of the hydrogels. Similarly, cell aggregation was also found in biodegradable PEG hydrogels containing caprolactone moieties. The aggregation of cells in TMC20 hydrogels resulted in enhanced cartilage matrix production compared with their PEG20 counterparts over 3 weeks of culture. Taken together, these results indicate that PEG hydrogels containing degradable OTMC moieties promote the aggregation and biosynthetic activity of encapsulated chondrocytes, indicating their potential as scaffolds for the repair of cartilage tissue.
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Affiliation(s)
- Chao Zhang
- Department of Bioengineering, University of California San Diego, La Jolla, CA 92093-0412, USA
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Affiliation(s)
- Y K Lee
- Division of Gastroenterology, Department of Internal Medicine, Mackay Memorial Hospital and Mackay Medicine, Nursing and Management College, Taipei, Taiwan
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Hsieh CC, Lin TH, Chang HW, Chang CW, Chang WC, Yang CC. Effect of dopants on the soft magnetic properties and high frequency characteristics of FeCoBM (M = Ti, Nb, Hf, and Ta) thin films. J Nanosci Nanotechnol 2011; 11:2752-2755. [PMID: 21449469 DOI: 10.1166/jnn.2011.2726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Effect of dopants on the soft magnetic properties and high frequency characteristics of FeCoBM thin films (M = Ti, Nb, Hf, and Ta) have been studied. For (Fe0.55Co0.45)(100-x)B(x) (x = 5-15) thin films, with the increase of B content, the resistivity was increased because B could decrease the crystallinity of the films. The (Fe0.55Co0.45)90B10 thin film showed the optimum properties, where 4piM(s) = 16.1 kG, H(ce) = 64.2 Oe, H(ch) = 13.5 Oe, H(k) = 310 Oe and p = 338 microomega-cm. To reduce the coercivity of the film, the elements M, including Ti, Nb, Hf, and Ta, were selected to substitute for B in the FeCoB films. It was found that (Fe0.55Co0.45)90B6Ti2Nb2 thin film after annealing at a temperature of 200 degrees C for 30 min showed the optimal properties, where 4piM(s) = 15.8 kG, H(ce) = 4.8 Oe, H(ch) = 3.6 Oe, H(k) = 224 Oe and p = 290 microomega-cm. The theoretically calculated ferromagnetic resonance frequency of the developed films can be higher than 5 GHz.
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Affiliation(s)
- C C Hsieh
- Department of Physics, National Chung Cheng University, Taiwan 621, ROC
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Kolodziej CM, Chang CW, Maynard HD. GlutathioneS-transferase as a general and reversible tag for surface immobilization of proteins. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm02370a] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Sangaj N, Kyriakakis P, Yang D, Chang CW, Arya G, Varghese S. Heparin mimicking polymer promotes myogenic differentiation of muscle progenitor cells. Biomacromolecules 2010; 11:3294-300. [PMID: 21058638 PMCID: PMC4136807 DOI: 10.1021/bm101041f] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Heparin and heparan sulfate mediated basic fibroblast growth factor (bFGF) signaling plays an important role in skeletal muscle homeostasis by maintaining a balance between proliferation and differentiation of muscle progenitor cells. In this study we investigate the role of a synthetic mimic of heparin, poly(sodium-4-styrenesulfonate) (PSS), on myogenic differentiation of C2C12 cells. Exogenous supplementation of PSS increased the differentiation of C2C12 cells in a dose-dependent manner, while the formation of multinucleated myotubes exhibited a nonmonotonic dependence with the concentration of PSS. Our results further suggest that one possible mechanism by which PSS promotes myogenic differentiation is by downregulating the mitogen activated extracellular regulated signaling kinase (MAPK/ERK) pathway. The binding ability of PSS to bFGF was found to be comparable to heparin through molecular docking calculations and by native PAGE. Such synthetic heparin mimics could offer a cost-effective alternative to heparin and also reduce the risk associated with batch-to-batch variation and contamination of heparin.
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Affiliation(s)
- Nivedita Sangaj
- Department of Bioengineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Phillip Kyriakakis
- Department of Bioengineering, University of California, San Diego, La Jolla, CA 92093, USA
- Department of Biology, University of California, San Diego, La Jolla, CA 92093, USA
| | - Darren Yang
- Department of Nanoengineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Chien-Wen Chang
- Department of Bioengineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Gaurav Arya
- Department of Nanoengineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Shyni Varghese
- Department of Bioengineering, University of California, San Diego, La Jolla, CA 92093, USA
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