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Pang HH, Li NS, Hsu YP, Ju SP, Syu GD, Du PX, Huang CY, Wei KC, Yang HW. AI-Driven Design System for Fabrication of Inhalable Nanocatchers for Virus Capture and Neutralization. Adv Healthc Mater 2024; 13:e2302927. [PMID: 37986024 DOI: 10.1002/adhm.202302927] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 11/13/2023] [Indexed: 11/22/2023]
Abstract
The global pandemic presents a critical threat to humanity, with no effective rapid-response solutions for early-stage virus dissemination. This study aims to create an AI-driven entry-blocker design system (AIEB) to fabricate inhalable virus-like nanocatchers (VLNCs) fused with entry-blocking peptides (EBPs) to counter pandemic viruses and explore therapeutic applications. This work focuses on developing angiotensin-converting enzyme 2 (ACE2)-mimic domain-fused VLNCs (ACE2@VLNCs) using AIEB and analyzing their interaction with the SARS-CoV-2 receptor binding domain (RBD), demonstrating their potential to hinder SARS-CoV-2 infection. Aerosol-based tests show ACE2@VLNCs persist over 70 min in the air and neutralize pseudoviruses within 30 min, indicating their utility in reducing airborne virus transmission. In vivo results reveal ACE2@VLNCs mitigate over 67% of SARS-CoV-2 infections. Biosafety studies confirm their safety, causing no damage to eyes, skin, lungs, or trachea, and not eliciting significant immune responses. These findings offer crucial insights into pandemic virus prevention and treatment, highlighting the potential of the ACE2@VLNCs system as a promising strategy against future pandemics.
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Affiliation(s)
- Hao-Han Pang
- Department of Biomedical Engineering, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Nan-Si Li
- Department of Biomedical Engineering, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Ying-Pei Hsu
- Department of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan
| | - Shin-Pon Ju
- Department of Mechanical and Electro-Mechanical Engineering, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan
| | - Guan-Da Syu
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan
- International Center for Wound Repair and Regeneration, National Cheng Kung University, Tainan, Taiwan
- Medical Device Innovation Center, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Pin-Xian Du
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Chiung-Yin Huang
- Department of Neurosurgery, Neuroscience Research Center, Chang Gung Memorial Hospital, Linkou, Taoyuan, 33305, Taiwan
| | - Kuo-Chen Wei
- Department of Neurosurgery, Neuroscience Research Center, Chang Gung Memorial Hospital, Linkou, Taoyuan, 33305, Taiwan
- School of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan
- Department of Neurosurgery, New Taipei Municipal TuCheng Hospital, New Taipei City, 23652, Taiwan
| | - Hung-Wei Yang
- Department of Biomedical Engineering, National Cheng Kung University, Tainan, 70101, Taiwan
- Medical Device Innovation Center, National Cheng Kung University, Tainan, 70101, Taiwan
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Pang HH, Huang CY, Chen PY, Li NS, Hsu YP, Wu JK, Fan HF, Wei KC, Yang HW. Bioengineered Bacteriophage-Like Nanoparticles as RNAi Therapeutics to Enhance Radiotherapy against Glioblastomas. ACS Nano 2023; 17:10407-10422. [PMID: 37120837 DOI: 10.1021/acsnano.3c01102] [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] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Since glioblastomas (GBMs) are radioresistant malignancies and most GBM recurrences occur in radiotherapy, increasing the effectiveness of radiotherapy by gene-silencing has recently attracted attention. However, the difficulty in precisely tuning the composition and RNA loading in nanoparticles leads to batch-to-batch variations of the RNA therapeutics, thus significantly restricting their clinical translation. Here, we bioengineer bacteriophage Qβ particles with a designed broccoli light-up three-way junction (b-3WJ) RNA scaffold (contains two siRNA/miRNA sequences and one light-up aptamer) packaging for the silencing of genes in radioresistant GBM cells. The in vitro results demonstrate that the cleavage of de novo designed b-3WJ RNA by Dicer enzyme can be easily monitored in real-time using fluorescence microscopy, and the TrQβ@b-3WJLet-7gsiEGFR successfully knocks down EGFR and IKKα simultaneously and thereby inactivates NF-κB signaling to inhibit DNA repair. Delivery of TrQβ@b-3WJLet-7gsiEGFR through convection-enhanced delivery (CED) infusion followed by 2Gy X-ray irradiation demonstrated that the median survival was prolonged to over 60 days compared with the 2Gy X-ray irradiated group (median survival: 31 days). Altogether, the results of this study could be critical for the design of RNAi-based genetic therapeutics, and CED infusion serves as a powerful delivery system for promoting radiotherapy against GBMs without evidence of systemic toxicity.
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Affiliation(s)
- Hao-Han Pang
- Department of Biomedical Engineering, National Cheng Kung University, No. 1, University Rd., Tainan 70101, Taiwan
| | - Chiung-Yin Huang
- Department of Neurosurgery, Neuroscience Research Center, Chang Gung Memorial Hospital, Linkou, 5 Fuxing St., Guishan Dist., Taoyuan 33305, Taiwan
| | - Pin-Yuan Chen
- Department of Neurosurgery, Neuroscience Research Center, Chang Gung Memorial Hospital, Linkou, 5 Fuxing St., Guishan Dist., Taoyuan 33305, Taiwan
- School of Medicine, Chang Gung University, 259 Wenhua 1st Rd., Guishan Dist., Taoyuan 33302, Taiwan
- Department of Neurosurgery, Chang Gung Memorial Hospital, Keelung, 222 Maijin Rd., Keelung 20401, Taiwan
| | - Nan-Si Li
- Department of Biomedical Engineering, National Cheng Kung University, No. 1, University Rd., Tainan 70101, Taiwan
| | - Ying-Pei Hsu
- Department of Biomedical Engineering, National Cheng Kung University, No. 1, University Rd., Tainan 70101, Taiwan
- Department of Materials and Optoelectronic Science, National Sun Yat-sen University, 70 Lienhai Rd., Kaohsiung 80424, Taiwan
| | - Jan-Kai Wu
- Department of Chemistry, National Sun Yat-sen University, 70 Lienhai Rd., Kaohsiung 80424, Taiwan
| | - Hsiu-Fang Fan
- Department of Chemistry, National Sun Yat-sen University, 70 Lienhai Rd., Kaohsiung 80424, Taiwan
- Institute of Medical Science and Technology, National Sun Yat-sen University, 70 Lienhai Rd., Kaohsiung 80424, Taiwan
| | - Kuo-Chen Wei
- Department of Neurosurgery, Neuroscience Research Center, Chang Gung Memorial Hospital, Linkou, 5 Fuxing St., Guishan Dist., Taoyuan 33305, Taiwan
- School of Medicine, Chang Gung University, 259 Wenhua 1st Rd., Guishan Dist., Taoyuan 33302, Taiwan
- Department of Neurosurgery, New Taipei Municipal TuCheng Hospital, 6, Sec 2, JunCheng Rd., New Taipei City 23652, Taiwan
| | - Hung-Wei Yang
- Department of Biomedical Engineering, National Cheng Kung University, No. 1, University Rd., Tainan 70101, Taiwan
- Medical Device Innovation Center, National Cheng Kung University, No. 1, University Rd., Tainan 70101, Taiwan
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Chen YJ, Hsu YP, Tain YL, Li NS, Pang HH, Kuo SW, Yang HW. Microneedle patches integrated with lateral flow cassettes for blood-free chronic kidney disease point-of-care testing during a pandemic. Biosens Bioelectron 2022; 208:114234. [PMID: 35397328 DOI: 10.1016/j.bios.2022.114234] [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: 12/16/2021] [Revised: 03/27/2022] [Accepted: 03/28/2022] [Indexed: 11/02/2022]
Abstract
Chronic kidney disease (CKD) is the most neglected chronic disease affecting over 750 million persons in the world. Currently, many patients with cancers or other chronic diseases (i.e., CKD) struggle to receive clinical treatment or examination due to hospitals cancelling or delaying in the COVID-19 pandemic, which may increase the risk of death. Cystatin C (Cys C) has been proposed as a potential glomerular filtration rate (GFR) marker for the early detection of acute kidney injury and CKD. However, most traditional methods for Cys C detection are immunoassays using serum as a sample and are tedious to perform and economically burdensome. To diagnose the disease in the early stage and carry out daily management during the current pandemic, we developed an integration of hydrogel microneedle patch (HMNP) and lateral flow cassette (LFC) to rapidly detect Cys C in skin interstitial fluid (ISF) in 25 min for blood-free CKD management anytime and anywhere by the naked eye that can reduce the impact of an individual's quality of life and life expectancy. Conceivably, this strategy presents a wide scope in the application of numerous other diseases if corresponding analytes are available in skin ISF.
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Affiliation(s)
- Yi-Jyun Chen
- Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Ying-Pei Hsu
- Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan; Department of Materials and Optoelectronic Science, Center for Functional Polymers and Supramolecular Materials, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - You-Lin Tain
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan; Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan
| | - Nan-Si Li
- Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Hao-Han Pang
- Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Shiao-Wei Kuo
- Department of Materials and Optoelectronic Science, Center for Functional Polymers and Supramolecular Materials, National Sun Yat-sen University, Kaohsiung 80424, Taiwan; Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
| | - Hung-Wei Yang
- Institute of Medical Science and Technology, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan.
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Chen WH, Yu KJ, Jhou JW, Pang HH, Weng WH, Lin WS, Yang HW. Glucose/Glutathione Co-triggered Tumor Hypoxia Relief and Chemodynamic Therapy to Enhance Photothermal Therapy in Bladder Cancer. ACS Appl Bio Mater 2021; 4:7485-7496. [PMID: 35006706 DOI: 10.1021/acsabm.1c00741] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Photothermal therapy (PTT) is a potential treatment for cancer that makes use of near-infrared (NIR) laser irradiation and is expected to assist traditional anti-cancer drug therapies; however, the therapeutic efficacy of PTT is restricted by thermal resistance due to the overexpression of heat shock proteins and insufficient penetration depth of lasers. Thus, PTT needs to be combined with additional therapeutic methods to obtain the optimal therapeutic efficacy for cancer. Herein, a multifunctional therapeutic platform combining PTT with glucose-triggered chemodynamic therapy (CDT) and glutathione (GSH)-triggered hypoxia relief was developed via GOx@MBSA-PPy-MnO2 NPs (GOx for glucose oxidase, M for Fe3O4, BSA for bovine serum albumin, and PPy for polypyrrole). GOx@MBSA-PPy-MnO2 NPs have excellent photothermal efficiency and can release Mn2+, which catalyzes the transformation of H2O2 into hydroxyl radicals (·OH) and O2 via a Fenton-like reaction, effectively destroying cancer cells and relieving tumor hypoxia. Meanwhile, a high content of H2O2 was produced via GOx catalysis of glucose, further enhancing the CDT efficiency. In addition, in vitro and in vivo experiments showed that the inhibition of cancer cell proliferation and effective inhibition of tumors could be caused by the combined PTT/glucose-triggered CDT effects and hypoxia relief of the GOx@MBSA-PPy-MnO2 NPs. Overall, this work provides evidence of a synergistic therapy that remarkably improves therapeutic efficacy and significantly prolongs the lifetime of mice compared with controls.
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Affiliation(s)
- Wen-Hsuan Chen
- Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung 804201, Taiwan
| | - Kai-Jie Yu
- Department of Chemical Engineering and Biotechnology and Graduate Institute of Biochemical and Biomedical Engineering, National Taipei University of Technology, Taipei 106344, Taiwan.,Division of Urology, Department of Surgery, Chang Gung Memorial Hospital, Linkou, Taoyuan 333423, Taiwan.,Department of Medicine, College of Medicine, Chang Gung University, Taoyuan 333323, Taiwan
| | - Jia-Wei Jhou
- Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung 804201, Taiwan
| | - Hao-Han Pang
- Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung 804201, Taiwan.,Institute of Biomedical Sciences, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Wen-Hui Weng
- Department of Chemical Engineering and Biotechnology and Graduate Institute of Biochemical and Biomedical Engineering, National Taipei University of Technology, Taipei 106344, Taiwan
| | - Wen-Sou Lin
- Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung 804201, Taiwan.,Division of Nephrology, Department of Internal Medicine, Kaohsiung Armed Forces General Hospital, Kaohsiung 802301, Taiwan
| | - Hung-Wei Yang
- Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung 804201, Taiwan
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Li NS, Chen YT, Hsu YP, Pang HH, Huang CY, Shiue YL, Wei KC, Yang HW. Mobile healthcare system based on the combination of a lateral flow pad and smartphone for rapid detection of uric acid in whole blood. Biosens Bioelectron 2020; 164:112309. [DOI: 10.1016/j.bios.2020.112309] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/13/2020] [Accepted: 05/15/2020] [Indexed: 12/15/2022]
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Pang HH, Ke YC, Li NS, Chen YT, Huang CY, Wei KC, Yang HW. A new lateral flow plasmonic biosensor based on gold-viral biomineralized nanozyme for on-site intracellular glutathione detection to evaluate drug-resistance level. Biosens Bioelectron 2020; 165:112325. [PMID: 32729474 DOI: 10.1016/j.bios.2020.112325] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 02/27/2020] [Revised: 05/19/2020] [Accepted: 05/22/2020] [Indexed: 12/15/2022]
Abstract
Temozolomide (TMZ)-resistant glioblastoma multiforme (GBM) cells would have abnormal redox status due to bio-thiols, like glutathione (GSH), which constitute the most crucial defense system that protects cells from therapeutic agents. Current strategies for GSH detection often require sophisticated instruments that may not be available in laboratories with fewer resources. Here, we circumvent this problem by introducing a lateral flow plasmonic biosensor (LFPB) based on gold-viral biomineralized nanoclusters (AuVCs) as nanozymes that enables the detection of a few molecules with the naked eye and quantified by an auto-analysis software. The GSH level controls the growth of gold nanoparticles (AuNPs) and generates coloured patterns with distinct tonality, which are then auto-analyzed to calculate the GSH concentrations by smartphone with an auto-analysis software. Under the optimized conditions, grayscale value plotted against GSH concentration exhibited a linear relationship within the range of 25-500 μM with a limit of detection (LoD) of 9.80 μM and highly positive correlation between detected GSH level and TMZ drug-resistance level in GBM cells. This excellent property allowed our approach to be used for on-site determination of GSH levels in a rapid (i.e., within 30 min), simple (i.e., auto-analysis software), and cost-effective process (i.e., instrument-free) for cancer precision therapy.
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Affiliation(s)
- Hao-Han Pang
- Institute of Medical Science and Technology, National Sun Yat-sen University, 70 Lienhai Rd., Kaohsiung, 80424, Taiwan; Institute of Biomedical Sciences, National Sun Yat-sen University, 70 Lienhai Rd., Kaohsiung, 80424, Taiwan
| | - Yong-Chen Ke
- Department of Chemistry, National Sun Yat-sen University, 70 Lienhai Rd., Kaohsiung, 80424, Taiwan
| | - Nan-Si Li
- Institute of Medical Science and Technology, National Sun Yat-sen University, 70 Lienhai Rd., Kaohsiung, 80424, Taiwan; Institute of Biomedical Sciences, National Sun Yat-sen University, 70 Lienhai Rd., Kaohsiung, 80424, Taiwan
| | - Ying-Tzu Chen
- Institute of Medical Science and Technology, National Sun Yat-sen University, 70 Lienhai Rd., Kaohsiung, 80424, Taiwan
| | - Chiung-Yin Huang
- Department of Neurosurgery, New Taipei Municipal TuCheng Hospital, Chang Gung Memorial Hospital and Chang Gung University, New Taipei City, 23652, Taiwan
| | - Kuo-Chen Wei
- Department of Neurosurgery, New Taipei Municipal TuCheng Hospital, Chang Gung Memorial Hospital and Chang Gung University, New Taipei City, 23652, Taiwan.
| | - Hung-Wei Yang
- Institute of Medical Science and Technology, National Sun Yat-sen University, 70 Lienhai Rd., Kaohsiung, 80424, Taiwan.
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Hsu YP, Yang HW, Li NS, Chen YT, Pang HH, Pang ST. Instrument-Free Detection of FXYD3 Using Vial-Based Immunosensor for Earlier and Faster Urothelial Carcinoma Diagnosis. ACS Sens 2020; 5:928-935. [PMID: 32162907 DOI: 10.1021/acssensors.9b02013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The incidence and 5 year recurrence rate of urothelial carcinomas (UCs), including UC of the bladder (UCB) and upper urinary tract UC (UTUC), have increased annually. There is a great need for a simple and fast point-of-care (POC) test for early diagnosis and amelioration in the survival rate. We present a POC test comprising a new vial-immunosensor, nanoenzyme, and iPhone 7 plus, which detects and quantifies the new biomarker FXYD domain-containing ion transport regulator 3 (FXYD3) in human urine for specific UC screening, tumor-grade classification, and postoperative monitoring by the grayscale value of the photograph taken. The performance of the proposed POC test was then verified using urine from 4 healthy people, 40 UCB patients (10 patients were low-grade and 30 patients were high-grade), and 13 UTUC patients (2 patients were low-grade and 11 patients were high-grade), confirming the accuracy and specificity by comparing the results with those obtained by enzyme-linked immunosorbent assay (ELISA). Moreover, we also designed a correction method that can make the grayscale values calculated by different smartphones close to the values calculated by iPhone 7 plus, resulting in the POC test enabling simple, fast, universal, and portable testing, data storage, and sharing for personal UCs screening and postoperative monitoring.
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Affiliation(s)
- Ying-Pei Hsu
- Institute of Medical Science and Technology, National Sun Yat-sen University, 70 Lienhai Road, Kaohsiung 80424, Taiwan
- Department of Materials and Optoelectronic Science, National Sun Yat-sen University, 70 Lienhai Road, Kaohsiung 80424, Taiwan
| | - Hung-Wei Yang
- Institute of Medical Science and Technology, National Sun Yat-sen University, 70 Lienhai Road, Kaohsiung 80424, Taiwan
| | - Nan-Si Li
- Institute of Medical Science and Technology, National Sun Yat-sen University, 70 Lienhai Road, Kaohsiung 80424, Taiwan
- Institute of Biomedical Sciences, National Sun Yat-sen University, 70 Lienhai Road, Kaohsiung 80424, Taiwan
| | - Ying-Tzu Chen
- Institute of Medical Science and Technology, National Sun Yat-sen University, 70 Lienhai Road, Kaohsiung 80424, Taiwan
| | - Hao-Han Pang
- Institute of Medical Science and Technology, National Sun Yat-sen University, 70 Lienhai Road, Kaohsiung 80424, Taiwan
- Institute of Biomedical Sciences, National Sun Yat-sen University, 70 Lienhai Road, Kaohsiung 80424, Taiwan
| | - See-Tong Pang
- Division of Urology, Department of Surgery, Linkou Chang Gung Memorial Hospital, 5 Fuxing Street, Guishan District, Taoyuan 33305, Taiwan
- School of Medicine, Chang Gung University, 259 Wenhua First Road, Guishan District, Taoyuan 33302, Taiwan
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Hsu YP, Li NS, Chen YT, Pang HH, Wei KC, Yang HW. A serological point-of-care test for Zika virus detection and infection surveillance using an enzyme-free vial immunosensor with a smartphone. Biosens Bioelectron 2020; 151:111960. [DOI: 10.1016/j.bios.2019.111960] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 11/17/2019] [Accepted: 12/09/2019] [Indexed: 12/17/2022]
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Pang HH, Huang CY, Chou YW, Lin CJ, Zhou ZL, Shiue YL, Wei KC, Yang HW. Bioengineering fluorescent virus-like particle/RNAi nanocomplexes act synergistically with temozolomide to eradicate brain tumors. Nanoscale 2019; 11:8102-8109. [PMID: 30982841 DOI: 10.1039/c9nr01247h] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The proof-of-concept strategy in this study based on biodegradable and biocompatible self-assembling fluorescent virus-like particle/RNAi nanocomplexes (VLP/RNAi) produced in Escherichia coli (E. coli) followed by surface modification with a cell-penetrating peptide (CPP) and an apolipoprotein E peptide (ApoEP) (dP@VLP/RNAi), which can cross the blood-brain barrier (BBB) to inhibit the DNA repair mechanism and act synergistically with temozolomide (TMZ) for promoting clinical chemotherapy has achieved good therapeutic effects towards malignant brain tumors. The synergistic value of this study's design was verified in intracranial mouse models of glioblastomas (GBMs). Intravenous administration of this formulation enhanced the curative efficacy of TMZ by downregulating the hepatocyte growth factor receptor (c-MET) gene in GBM U87 cells. Furthermore, upon gene-chemotherapy, the methylated DNA in GBM U87 cells was significantly enhanced by inhibiting the DNA repair mechanism, leading to significant brain tumor suppression. The results of this study could be critical for the design of RNAi-based genetic therapeutics for promoting chemotherapy against brain tumors.
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Affiliation(s)
- Hao-Han Pang
- Institute of Medical Science and Technology, National Sun Yat-sen University, 70 Lienhai Rd., Kaohsiung 80424, Taiwan.
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Pang HH, Chen PY, Wei KC, Huang CW, Shiue YL, Huang CY, Yang HW. Convection-Enhanced Delivery of a Virus-Like Nanotherapeutic Agent with Dual-Modal Imaging for Besiegement and Eradication of Brain Tumors. Am J Cancer Res 2019; 9:1752-1763. [PMID: 31037136 PMCID: PMC6485197 DOI: 10.7150/thno.30977] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [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: 10/26/2018] [Accepted: 01/06/2019] [Indexed: 12/21/2022] Open
Abstract
Convection-enhanced delivery (CED) is a promising technique for infusing a therapeutic agent directly into the brain, bypassing the blood-brain barrier (BBB) with a pressure gradient to increase drug concentration specifically around the brain tumor, thereby enhancing tumor inhibition and limiting the systemic toxicity of chemotherapeutic agents. Herein, we developed a dual-imaging monitored virus-like nanotherapeutic agent as an ideal CED infusate, which can be delivered to specifically besiege and eradicate brain tumors. Methods: We report one-pot fabrication of green-fluorescence virus-like particles (gVLPs) in Escherichia coli (E. coli) for epirubicin (EPI) loading, cell-penetrating peptide (CPP) modification, and 68Ga-DOTA labeling to form a positron emission tomography (PET)-fluorescence dual-imaging monitored virus-like nanotherapeutic agent (68Ga-DOTA labeled EPI@CPP-gVLPs) combined with CED for brain tumor therapy and image tracking. The drug delivery, cytotoxicity, cell uptake, biodistribution, PET-fluorescence imaging and anti-tumor efficacy of the 68Ga-DOTA labeled EPI@CPP-gVLPs were investigated in vitro and in vivo by using U87-MG glioma cell line and U87-MG tumor model. Results: The 68Ga-DOTA-labeled EPI@CPP-gVLPs showed excellent serum stability as an ideal CED infusate (30-40 nm in size), and can be disassembled through proteolytic degradation of the coat protein shell to enable drug release and clearance to minimize long-term accumulation. The present results indicated that 68Ga-DOTA-labeled EPI@CPP-gVLPs can provide a sufficiently high drug payload (39.2 wt% for EPI) and excellent detectability through fluorescence and PET imaging to accurately represent drug distribution during CED infusion. In vivo delivery of the 68Ga-DOTA-labeled EPI@CPP-gVLPs through CED demonstrated that the median survival was prolonged to over 50 days when the mice received two administrations (once per week) compared with the control group (median survival: 26 days). Conclusion: The results clearly indicated that a combination of 68Ga-DOTA-labeled EPI@CPP-gVLPs and CED can serve as a flexible and powerful synergistic treatment in brain tumors without evidence of systemic toxicity.
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Abstract
Liquids attain a metastable state without crystallizing by cooling rapidly to a given temperature below the melting point. With increasing supercooling, the nucleation rate would show an increase based on the prediction of the classical nucleation theory. It is generally thought that the nucleation rate will reach the maximum upon approaching the glass transition temperature, Tg, for glass-forming liquids. We report that there exists a supercooled region above Tg in which the crystallization has actually been severely suppressed. Our molecular dynamics simulations show that the growth of embryos in the supercooled Cu60Zr40 melt is subjected to a strong anisotropic stress associated with the dynamic heterogeneity. Its long-range effect drives the embryo to grow into a ramified morphology so that the interface energy dominates over the embryo growth, leading to the suppression of nucleation.
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Affiliation(s)
- H H Pang
- School of Physics, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Q L Bi
- School of Physics, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - H S Huang
- School of Physics, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Y J Lü
- School of Physics, Beijing Institute of Technology, Beijing 100081, People's Republic of China
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Abstract
We have applied the arbitrarily primed polymerase chain reaction (AP-PCR) technique to the analysis of the relationships among six japonica and indica cultivars, and four wild species of rice. Chosen were four primers of arbitrary sequence that gave multiple amplification products when rice DNA was used as template. Among a total of 50 bands scored, 44 were polymorphic, which was sufficient to distinguish the species used in this study. It is apparent from the comparisons of genetic distances that cultivated rice (Oryza sativa) exhibits closest molecular affinity to wild O. rufipogon, suggesting that the origin of cultivated rice is from O. rufipogon. In a dendrogram of cultivated rice and O. rufipogon from different regions, japonica and indica rice were most closely clustered with O. rufipogon from China and India, respectively. Japonica and indica subspecies showed closer affinity with O. rufipogon from different origins than with each other, supporting a hypothesis of multi-centers of the origin of rice cultivation.
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Affiliation(s)
- Q M Yi
- Department of Biochemistry, Wuhan University, China
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