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Yang C, Lin ZI, Zhang X, Xu Z, Xu G, Wang YM, Tsai TH, Cheng PW, Law WC, Yong KT, Chen CK. Recent Advances in Engineering Carriers for siRNA Delivery. Macromol Biosci 2024; 24:e2300362. [PMID: 38150293 DOI: 10.1002/mabi.202300362] [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: 08/09/2023] [Revised: 11/29/2023] [Indexed: 12/28/2023]
Abstract
RNA interference (RNAi) technology has been a promising treatment strategy for combating intractable diseases. However, the applications of RNAi in clinical are hampered by extracellular and intracellular barriers. To overcome these barriers, various siRNA delivery systems have been developed in the past two decades. The first approved RNAi therapeutic, Patisiran (ONPATTRO) using lipids as the carrier, for the treatment of amyloidosis is one of the most important milestones. This has greatly encouraged researchers to work on creating new functional siRNA carriers. In this review, the recent advances in siRNA carriers consisting of lipids, polymers, and polymer-modified inorganic particles for cancer therapy are summarized. Representative examples are presented to show the structural design of the carriers in order to overcome the delivery hurdles associated with RNAi therapies. Finally, the existing challenges and future perspective for developing RNAi as a clinical modality will be discussed and proposed. It is believed that the addressed contributions in this review will promote the development of siRNA delivery systems for future clinical applications.
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Affiliation(s)
- Chengbin Yang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Zheng-Ian Lin
- Polymeric Biomaterials Laboratory, Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Xinmeng Zhang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Zhourui Xu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Gaixia Xu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Yu-Min Wang
- Polymeric Biomaterials Laboratory, Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Tzu-Hsien Tsai
- Division of Cardiology and Department of Internal Medicine, Ditmanson Medical Foundation Chiayi Christian Hospital, Chiayi, 60002, Taiwan
| | - Pei-Wen Cheng
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung, 81362, Taiwan
- Department of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, 999077, P. R. China
| | - Ken-Tye Yong
- School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales, 2006, Australia
| | - Chih-Kuang Chen
- Polymeric Biomaterials Laboratory, Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
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Lin ZI, Tsai TH, Yu KC, Nien YH, Liu RP, Liu GL, Chi PL, Fang YP, Ko BT, Law WC, Zhou C, Yong KT, Cheng PW, Chen CK. Creation of Chitosan-Based Nanocapsule-in-Nanofiber Structures for Hydrophobic/Hydrophilic Drug Co-Delivery and Their Dressing Applications in Diabetic Wounds. Macromol Biosci 2023; 23:e2300145. [PMID: 37279400 DOI: 10.1002/mabi.202300145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/21/2023] [Indexed: 06/08/2023]
Abstract
Nanofiber meshes (NFMs) loaded with therapeutic agents are very often employed to treat hard-to-heal wounds such as diabetic wounds. However, most of the NFMs have limited capability to load multiple or hydrophilicity distinctive-therapeutic agents. The therapy strategy is therefore significantly hampered. To tackle the innate drawback associated with the drug loading versatility, a chitosan-based nanocapsule-in-nanofiber (NC-in-NF) structural NFM system is developed for simultaneous loading of hydrophobic and hydrophilic drugs. Oleic acid-modified chitosan is first converted into NCs by the developed mini-emulsion interfacial cross-linking procedure, followed by loading a hydrophobic anti-inflammatory agent Curcumin (Cur) into the NCs. Sequentially, the Cur-loaded NCs are successfully introduced into reductant-responsive maleoyl functional chitosan/polyvinyl alcohol NFMs containing a hydrophilic antibiotic Tetracycline hydrochloride. Having a co-loading capability for hydrophilicity distinctive agents, biocompatibility, and a controlled release property, the resulting NFMs have demonstrated the efficacy on promoting wound healing either in normal or diabetic rats.
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Affiliation(s)
- Zheng-Ian Lin
- Polymeric Biomaterials Laboratory, Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Tzu-Hsien Tsai
- Division of Cardiology and Department of Internal Medicine, Ditmanson Medical Foundation Chiayi Christian Hospital, Chiayi, 60002, Taiwan
| | - Kuan-Chi Yu
- Polymeric Biomaterials Laboratory, Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Yu-Hsun Nien
- Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin, 64002, Taiwan
| | - Ru-Ping Liu
- Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin, 64002, Taiwan
| | - Guan-Lin Liu
- Department of Chemistry, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Pei-Ling Chi
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung, 81362, Taiwan
| | - Yi-Ping Fang
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, 80708, Taiwan
- Regenerative Medical and Cell Therapy Center, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan
| | - Bao-Tsan Ko
- Department of Chemistry, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, 999077, P. R. China
| | - Cheng Zhou
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Ken-Tye Yong
- School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales, 2006, Australia
| | - Pei-Wen Cheng
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung, 81362, Taiwan
- Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Chih-Kuang Chen
- Polymeric Biomaterials Laboratory, Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
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Schee JP, Ang CL, Crystal Teoh SC, Tan HJ, Chew SH, Steven A, Hii DW, Chin YT, Loh EW, Samuel D, Narayanan P, Husin M, Linda Then YY, Cheah CF, Cheah WK, Isa ZC, Ibrahim A, Chia YK, Ibrahim KA, Looi I, Law WC, Abdul Aziz Z. Intravenous thrombolysis for multi-ethnic Asians with acute ischaemia stroke in Malaysian public primary stroke centres versus acute stroke ready hospitals: Comparison of real-world clinical outcomes. Med J Malaysia 2023; 78:594-601. [PMID: 37775485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 10/01/2023]
Abstract
INTRODUCTION Intravenous thrombolysis (IVT) with recombinant tissue plasminogen activator is beneficial in acute ischaemic stroke (AIS). We aim to compare the realworld clinical outcomes and service efficiency of IVT in Malaysian primary stroke centres (PSCs) versus acute stroke ready hospitals (ASRHs). MATERIALS AND METHODS We conducted a multi-centre cohort study involving 5 PSCs and 7 ASRHs in Malaysia. Through review of medical records of AIS patients who received IVT from 01 January 2014 to 30 June 2021, real-world data was extracted for analysis. Univariate and multivariate regression models were employed to evaluate the role of PSCs versus ASRHs in post-IVT outcomes and complications. Statistical significance was set at p<0.05. RESULTS A total of 313 multi-ethnic Asians, namely 231 from PSCs and 82 from ASRHs, were included. Both groups were comparable in baseline demographic, clinical, and stroke characteristics. The efficiency of IVT delivery (door-toneedle time), functional outcomes (mRS at 3 months post- IVT), and rates of adverse events (intracranial haemorrhages and mortality) following IVT were comparable between the 2 groups. Notably, 46.8% and 48.8% of patients in PSCs and ASRHs group respectively (p=0.752) achieved favourable functional outcome (mRS≤1 at 3 months post-IVT). Regression analyses demonstrated that post-IVT functional outcomes and adverse events were independent of the role of PSCs or ASRHs. CONCLUSION Our study provides real-world evidence which suggests that IVT can be equally safe, effective, and efficiently delivered in ASRHs. This may encourage the establishment of more ASRHs to extend the benefits of IVT to a greater proportion of stroke populations and enhance the regional stroke care.
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Affiliation(s)
- J P Schee
- Tawau Hospital, Department of Medicine, Sabah, Malaysia
| | - C L Ang
- Tawau Hospital, Department of Medicine, Sabah, Malaysia
| | - S C Crystal Teoh
- Sarawak General Hospital, Department of Medicine, Sarawak, Malaysia.
| | - H J Tan
- Raja Permaisuri Bainun Hospital, Department of Medicine, Perak, Malaysia
| | - S H Chew
- Queen Elizabeth Hospital, Department of Medicine, Sabah, Malaysia
| | - A Steven
- Sarawak General Hospital, Department of Medicine, Sarawak, Malaysia
| | - D W Hii
- Sarawak General Hospital, Department of Medicine, Sarawak, Malaysia
| | - Y T Chin
- Sultanah Nur Zahirah Hospital, Department of Medicine, Terengganu, Malaysia,
| | - E W Loh
- Bintulu Hospital, Department of Medicine, Sarawak, Malaysia
| | - D Samuel
- Bintulu Hospital, Department of Medicine, Sarawak, Malaysia
| | - P Narayanan
- Sarikei Hospital, Department of Medicine, Sarawak, Malaysia
| | - M Husin
- Sultanah Nur Zahirah Hospital, Department of Medicine, Terengganu, Malaysia
| | - Y Y Linda Then
- Sarawak General Hospital, Department of Medicine, Sarawak, Malaysia
| | - C F Cheah
- Raja Permaisuri Bainun Hospital, Department of Medicine, Perak, Malaysia
| | - W K Cheah
- Raja Permaisuri Bainun Hospital, Department of Medicine, Perak, Malaysia
| | - Z C Isa
- Sultan Abdul Halim Hospital, Department of Medicine, Kedah, Malaysia
| | - A Ibrahim
- Sultan Abdul Halim Hospital, Department of Medicine, Kedah, Malaysia
| | - Y K Chia
- Queen Elizabeth Hospital, Department of Medicine, Sabah, Malaysia
| | - K A Ibrahim
- Sultan Abdul Halim Hospital, Department of Medicine, Kedah, Malaysia
| | - I Looi
- Seberang Jaya Hospital, Department of Medicine, Penang, Malaysia
| | - W C Law
- Sarawak General Hospital, Department of Medicine, Sarawak, Malaysia
| | - Z Abdul Aziz
- Sultanah Nur Zahirah Hospital, Department of Medicine, Terengganu, Malaysia
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Albart SA, Yusof Khan AHK, Wan Zaidi WA, Muthuppalaniappan AM, Kandavello G, Koh GT, Leong MC, Liew HB, Ong BH, Viswanathan S, Hoo FK, Looi I, Yap YG, Law WC. Management of patent foramen ovale in embolic stroke of undetermined source patients: Malaysian experts' consensus. Med J Malaysia 2023; 78:389-403. [PMID: 37271850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
INTRODUCTION About 20 to 40% of ischaemic stroke causes are cryptogenic. Embolic stroke of undetermined source (ESUS) is a subtype of cryptogenic stroke which is diagnosed based on specific criteria. Even though patent foramen ovale (PFO) is linked with the risk of stroke, it is found in about 25% of the general population, so it might be an innocent bystander. The best way to treat ESUS patients with PFO is still up for discussion. MATERIALS AND METHODS Therefore, based on current evidence and expert opinion, Malaysian expert panels from various disciplines have gathered to discuss the management of ESUS patients with PFO. This consensus sought to educate Malaysian healthcare professionals to diagnose and manage PFO in ESUS patients based on local resources and facilities. RESULTS Based on consensus, the Malaysian expert recommended PFO closure for embolic stroke patients who were younger than 60, had high RoPE scores and did not require long-term anticoagulation. However, the decision should be made after other mechanisms of stroke have been ruled out via thorough investigation and multidisciplinary evaluation. The PFO screening should be made using readily available imaging modalities, ideally contrasttransthoracic echocardiogram (c-TTE) or contrasttranscranial Doppler (c-TCD). The contrast-transesophageal echocardiogram (c-TEE) should be used for the confirmation of PFO diagnosis. The experts advised closing PFO as early as possible because there is limited evidence for late closure. For the post-closure follow-up management, dual antiplatelet therapy (DAPT) for one to three months, followed by single antiplatelet therapy (APT) for six months, is advised. Nonetheless, with joint care from a cardiologist and a neurologist, the multidisciplinary team will decide on the continuation of therapy.
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Affiliation(s)
- S A Albart
- Clinical Research Centre, Hospital Seberang Jaya, Ministry of Health Malaysia, Seberang Jaya, Pulau Pinang, Malaysia
| | - A H K Yusof Khan
- Universiti Putra Malaysia, Faculty of Medicine and Health Sciences, Department of Neurology, Serdang, Selangor, Malaysia.
| | - W A Wan Zaidi
- Hospital Canselor Tuanku Muhriz (HCTM), Department of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | | | - G Kandavello
- Institut Jantung Negara, Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | - G T Koh
- Hospital Serdang, Paediatric Cardiology Unit, Kajang, Selangor, Malaysia
| | - M C Leong
- Institut Jantung Negara, Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | - H B Liew
- Hospital Queen Elizabeth II, Department of Cardiology, Ministry of Health Malaysia, Kota Kinabalu, Sabah, Malaysia
| | - B H Ong
- Kedah Medical Centre, Alor Setar, Kedah, Malaysia
| | - S Viswanathan
- Hospital Kuala Lumpur, Department of Neurology, Ministry of Health Malaysia, Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | - F K Hoo
- Universiti Putra Malaysia, Faculty of Medicine and Health Sciences, Department of Neurology, Serdang, Selangor, Malaysia
| | - I Looi
- Clinical Research Centre, Hospital Seberang Jaya, Ministry of Health Malaysia, Seberang Jaya, Pulau Pinang, Malaysia
| | - Y G Yap
- Sunway Medical Centre, Petaling Jaya, Selangor, Malaysia
| | - W C Law
- Hospital Umum Sarawak, Department of Medicine, Ministry of Health Malaysia, Kuching, Sarawak, Malaysia
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Wang X, Yang Y, Zhang G, Tang CY, Law WC, Yu C, Wu X, Li S, Liao Y. NIR-Cleavable and pH-Responsive Polymeric Yolk-Shell Nanoparticles for Controlled Drug Release. Biomacromolecules 2023; 24:2009-2021. [PMID: 37104701 DOI: 10.1021/acs.biomac.2c01404] [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: 04/29/2023]
Abstract
Responsive drug release and low toxicity of drug carriers are important for designing controlled release systems. Here, a double functional diffractive o-nitrobenzyl, containing multiple electron-donating groups as a crosslinker and methacrylic acid (MAA) as a monomer, was used to decorate upconversion nanoparticles (UCNPs) to produce robust poly o-nitrobenzyl@UCNP nanocapsules using the distillation-precipitation polymerization and templating method. Poly o-nitrobenzyl@UCNP nanocapsules with a robust yolk-shell structure exhibited near-infrared (NIR) light-/pH-responsive properties. When the nanocapsules were exposed to 980 nm NIR irradiation, the loaded drug was efficiently released by altering the shell of the nanocapsules. The photodegradation kinetics of the poly o-nitrobenzyl@UCNP nanocapsules were studied. The anticancer drug, doxorubicin hydrochloride (DOX), was loaded at pH 8.0 with a loading efficiency of 13.2 wt %. The Baker-Lonsdale model was used to determine the diffusion coefficients under different release conditions to facilitate the design of dual-responsive drug release devices or systems. Additionally, cytotoxicity studies showed that the drug release of DOX could be efficiently triggered by NIR to kill cancer cells in a controlled manner.
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Affiliation(s)
- Xiaotao Wang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center for Green Light-weight Materials and Processing, School of Materials Science and Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Yebin Yang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center for Green Light-weight Materials and Processing, School of Materials Science and Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Gaowen Zhang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center for Green Light-weight Materials and Processing, School of Materials Science and Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Chak-Yin Tang
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China
| | - Cong Yu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center for Green Light-weight Materials and Processing, School of Materials Science and Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Xuanqi Wu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center for Green Light-weight Materials and Processing, School of Materials Science and Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Shuai Li
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center for Green Light-weight Materials and Processing, School of Materials Science and Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Yonggui Liao
- Key Laboratory for Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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Foo DHP, Law WC, Wong SC, Tay JS, Ng BHS, Chunggat J, Yeo JJP, Jong RHC, Sulaiman MNA, Igo M, Gan KX, Then LYY, Ho KH, Koh KT, Fong AYY. Comparison of adhesive single-lead cardiac ECG patch device with Holter monitoring for detecting atrial fibrillation after an acute cerebral ischemic event: An interim analysis. Eur Heart J 2023. [DOI: 10.1093/eurheartj/ehac779.022] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Ministry of Health Malaysia
Background
Stroke secondary to atrial fibrillation (AF) is common and often associated with higher risk of stroke recurrence. Detection of AF is challenging due to brief unpredictable episodes of AF runs, especially in patients whose admission electrocardiogram (ECG) demonstrates a sinus rhythm. Probability of AF detection may be higher with early initiation of prolonged ECG monitoring.
Purpose
To compare diagnostic yield of 7-day cardiac ECG patch versus 24-hour Holter monitoring for detecting AF≥30 seconds; to identify predictors of AF in stroke patients; to determine if 7-day cardiac ECG patch results in a change in clinical practice.
Methods
In this investigator-initiated prospective study with pairwise comparison of 24-hour Holter and 7-day cardiac ECG patch monitoring, 150 patients who were admitted to a tertiary referral centre with acute ischemic stroke (AIS) or transient ischemic attack (TIA) within 1 week, without known AF, and had sinus rhythm in the admission 12-lead ECG were enrolled. Each patient underwent simultaneous 24-hour Holter and 7-day cardiac ECG patch monitoring. Routine transthoracic echocardiography was performed on each patient to assess cardiac function and exclude intracardiac thrombus.
Results
There were 102 (68.0%) male patients. 12 (8.0%) patients had underlying history of coronary artery disease; 26 (17.3%) had recurrent stroke or TIA. On admission, median NIH Stroke scale was 4; 18 (12.0%) patients had thrombolysis with alteplase. On transthoracic echocardiography, none had intracardiac thrombus.
Both Holter and cardiac ECG patch monitoring were initiated simultaneously at median 2 days after index stroke event. Of 150 patients, 17 (11.3%) detected AF ≥30 seconds. Of these 17 patients, 7 (4.7%) had AF detected within the first 24 hours on both Holter and cardiac ECG patch; 10 (6.7%) were detected after 24 hours on cardiac ECG patch only. Number needed to screen to detect one AF was 6. Compliance to 7-day cardiac ECG patch monitoring was 81.3%.
There was no significant difference in age among patients with and without AF. Although left atrium (LA) was not found to be dilated in patients with AF, LA volume index was significantly higher (28.3±15.9 vs 21.8±8.5, p=0.018) and LA emptying fraction (LAEF) was significantly lower (38.0%±30.2 vs 52.6%±16.7, p=0.007). The prolonged 7-day cardiac ECG monitoring patch resulted in 1.5-fold increase in prescription of anticoagulation therapy.
Conclusions
A 7-day cardiac ECG patch monitoring detected more patients with AF ≥30 seconds than 24-hour Holter monitoring and resulted in increase in prescription of anticoagulation therapy. Higher LA volume index and lower LA emptying fraction were predictors of AF in patients with a recent stroke.
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Affiliation(s)
- D H P Foo
- Sarawak General Hospital, Clinical Research Centre , Kuching , Malaysia
| | - W C Law
- Sarawak General Hospital, Neurology Unit , Kuching , Malaysia
| | - S C Wong
- Sarawak General Hospital, Neurology Unit , Kuching , Malaysia
| | - J S Tay
- Sarawak General Hospital, Neurology Unit , Kuching , Malaysia
| | - B H S Ng
- Sarawak General Hospital, Neurology Unit , Kuching , Malaysia
| | - J Chunggat
- Sarawak General Hospital, Clinical Research Centre , Kuching , Malaysia
| | - J J P Yeo
- Sarawak General Hospital, Clinical Research Centre , Kuching , Malaysia
| | - R H C Jong
- Sarawak General Hospital, Clinical Research Centre , Kuching , Malaysia
| | - M N A Sulaiman
- Sarawak General Hospital, Clinical Research Centre , Kuching , Malaysia
| | - M Igo
- Sarawak General Hospital, Clinical Research Centre , Kuching , Malaysia
| | - K X Gan
- Sarawak General Hospital, Neurology Unit , Kuching , Malaysia
| | - L Y Y Then
- Sarawak General Hospital, Neurology Unit , Kuching , Malaysia
| | - K H Ho
- Sarawak Heart Center, Department of Cardiology , Kuching , Malaysia
| | - K T Koh
- Sarawak Heart Center, Department of Cardiology , Kuching , Malaysia
| | - A Y Y Fong
- Sarawak General Hospital, Clinical Research Centre , Kuching , Malaysia
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7
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Jiang Y, Fan M, Yang Z, Liu X, Xu Z, Liu S, Feng G, Tang S, Li Z, Zhang Y, Chen S, Yang C, Law WC, Dong B, Xu G, Yong KT. Recent advances in nanotechnology approaches for non-viral gene therapy. Biomater Sci 2022; 10:6862-6892. [PMID: 36222758 DOI: 10.1039/d2bm01001a] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Gene therapy has shown great potential in the treatment of many diseases by downregulating the expression of certain genes. The development of gene vectors as a vehicle for gene therapy has greatly facilitated the widespread clinical application of nucleic acid materials (DNA, mRNA, siRNA, and miRNA). Currently, both viral and non-viral vectors are used as delivery systems of nucleic acid materials for gene therapy. However, viral vector-based gene therapy has several limitations, including immunogenicity and carcinogenesis caused by the exogenous viral vectors. To address these issues, non-viral nanocarrier-based gene therapy has been explored for superior performance with enhanced gene stability, high treatment efficiency, improved tumor-targeting, and better biocompatibility. In this review, we discuss various non-viral vector-mediated gene therapy approaches using multifunctional biodegradable or non-biodegradable nanocarriers, including polymer-based nanoparticles, lipid-based nanoparticles, carbon nanotubes, gold nanoparticles (AuNPs), quantum dots (QDs), silica nanoparticles, metal-based nanoparticles and two-dimensional nanocarriers. Various strategies to construct non-viral nanocarriers based on their delivery efficiency of targeted genes will be introduced. Subsequently, we discuss the cellular uptake pathways of non-viral nanocarriers. In addition, multifunctional gene therapy based on non-viral nanocarriers is summarized, in which the gene therapy can be combined with other treatments, such as photothermal therapy (PTT), photodynamic therapy (PDT), immunotherapy and chemotherapy. We also provide a comprehensive discussion of the biological toxicity and safety of non-viral vector-based gene therapy. Finally, the present limitations and challenges of non-viral nanocarriers for gene therapy in future clinical research are discussed, to promote wider clinical applications of non-viral vector-based gene therapy.
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Affiliation(s)
- Yihang Jiang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, Guangdong 518055, China.
| | - Miaozhuang Fan
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, Guangdong 518055, China.
| | - Zhenxu Yang
- School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia. .,The University of Sydney Nano Institute, The University of Sydney, Sydney, New South Wales 2006, Australia.,The Biophotonics and Mechanobioengineering Laboratory, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Xiaochen Liu
- School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia. .,The University of Sydney Nano Institute, The University of Sydney, Sydney, New South Wales 2006, Australia.,The Biophotonics and Mechanobioengineering Laboratory, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Zhourui Xu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, Guangdong 518055, China.
| | - Shikang Liu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, Guangdong 518055, China.
| | - Gang Feng
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, Guangdong 518055, China.
| | - Shuo Tang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, Guangdong 518055, China.
| | - Zhengzheng Li
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, Guangdong 518055, China.
| | - Yibin Zhang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, Guangdong 518055, China.
| | - Shilin Chen
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, Guangdong 518055, China.
| | - Chengbin Yang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, Guangdong 518055, China.
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China
| | - Biqin Dong
- Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China
| | - Gaixia Xu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, Guangdong 518055, China.
| | - Ken-Tye Yong
- School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia. .,The University of Sydney Nano Institute, The University of Sydney, Sydney, New South Wales 2006, Australia.,The Biophotonics and Mechanobioengineering Laboratory, The University of Sydney, Sydney, New South Wales 2006, Australia
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8
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Wang X, Hu W, Yang Y, Liao Y, Law WC, Tang CY. Photodegradable and pH responsive nanocapsules encapsulated with upconversion nanoparticles for diagnosis and treatment. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Chen S, Jiang Y, Fan M, Zhang X, Zhang Y, Chen T, Yang C, Law WC, Xu Z, Xu G. Highly biocompatible chlorin e6-poly(dopamine) core-shell nanoparticles for enhanced cancer phototherapy. Nanoscale Adv 2022; 4:4617-4627. [PMID: 36341287 PMCID: PMC9595193 DOI: 10.1039/d2na00504b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 09/14/2022] [Indexed: 05/15/2023]
Abstract
Cancer is a life-threatening disease worldwide. Although several approaches, such as surgery, chemotherapy, and radiotherapy, have been proven effective for many patients in clinics, they usually suffer from drug resistance, severe toxic-side effects, patient discomfort, and sometimes, unsatisfactory efficacies. In recent years, phototherapy, as a less invasive but effective therapeutic method, has brought hope for cancer treatment. However, most reported photo-therapeutic agents are constructed using complex components with non-negligible toxicity risk, thus retarding the start of their clinical trials. To address this issue, herein, biocompatible photothermal/photodynamic dual-mode therapeutic nanoparticles (CBP NPs) were successfully designed and constructed based on the Food and Drug Administration (FDA)-approved ingredients, chlorin e6 (Ce6) and poly(dopamine) (PDA). Upon light irradiation, hyperthermia was induced and reactive oxygen species (ROS) were generated simultaneously by CBP NPs, contributing to synergistic phototherapy toward cancer. The in vitro and in vivo experiments have demonstrated well the antitumor effect of CBP NPs. More importantly, CBP NPs are completely harmless and degradable in vivo. Together, the CBP NPs developed by us are an ideal candidate for the enhanced phototherapy of tumors, which holds great potential for future clinical translation.
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Affiliation(s)
- Shilin Chen
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University Shenzhen 518060 China
| | - Yihang Jiang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University Shenzhen 518060 China
| | - Miaozhaung Fan
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University Shenzhen 518060 China
| | - Xinmeng Zhang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University Shenzhen 518060 China
| | - Ying Zhang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University Shenzhen 518060 China
| | - Ting Chen
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University Hong Kong
| | - Chengbin Yang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University Shenzhen 518060 China
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University Hong Kong
| | - Zhourui Xu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University Shenzhen 518060 China
| | - Gaixia Xu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University Shenzhen 518060 China
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10
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Zatsepin A, Kuznetsova Y, Zatsepin D, Wong CH, Law WC, Tang CY, Gavrilov N. Exciton Luminescence and Optical Properties of Nanocrystalline Cubic Y 2O 3 Films Prepared by Reactive Magnetron Sputtering. Nanomaterials (Basel) 2022; 12:2726. [PMID: 35957157 PMCID: PMC9370354 DOI: 10.3390/nano12152726] [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] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 07/28/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
This paper presents a comprehensive study of the energy structure, optical characteristics, and spectral-kinetic parameters of elementary excitations in a high-purity nanocrystalline cubic Y2O3 film synthesized by reactive magnetron sputtering. The optical transparency gaps for direct and indirect interband transitions were determined and discussed. The dispersion of the refractive index was established based on the analysis of interference effects. It was found that the refractive index of the Y2O3 film synthesized in this study is higher in order of magnitude than that of the films obtained with the help of other technologies. The intrinsic emission of Y2O3 film has been discussed and associated with the triplet-singlet radiative relaxation of self-trapped and bound excitons. We also studied the temperature behavior of the exciton luminescence of Y2O3 for the first time and determined thermal activation barriers. The optical energy and kinetic parameters of cubic Y2O3 films were analyzed in comparison with those of the monoclinic films of yttrium oxide. The main difference between the optical properties of cubic and monoclinic Y2O3 films was established, which allowed for a supposition of their application prospects.
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Affiliation(s)
- Anatoly Zatsepin
- Institute of Physics and Technology, Ural Federal University, 620075 Ekaterinburg, Russia
| | - Yulia Kuznetsova
- Institute of Physics and Technology, Ural Federal University, 620075 Ekaterinburg, Russia
| | - Dmitry Zatsepin
- Institute of Physics and Technology, Ural Federal University, 620075 Ekaterinburg, Russia
- Institute of Metal Physics, Ural Branch of Russian Academy of Sciences, 620108 Ekaterinburg, Russia
| | - Chi-Ho Wong
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong
- Research Institute for Advanced Manufacturing, The Hong Kong Polytechnic University, Hong Kong
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong
| | - Chak-Yin Tang
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong
| | - Nikolay Gavrilov
- Institute of Electrophysics, Ural Branch of Russian Academy of Science, 620049 Ekaterinburg, Russia
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11
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Xu Z, Zhang Z, Deng X, Li J, Jiang Y, Law WC, Yang C, Zhang W, Chen X, Wang K, Wang D, Xu G. Deep-Brain Three-Photon Imaging Enabled by Aggregation-Induced Emission Luminogens with Near-Infrared-III Excitation. ACS Nano 2022; 16:6712-6724. [PMID: 35293713 DOI: 10.1021/acsnano.2c01349] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [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: 06/14/2023]
Abstract
Understanding the morphology and hemodynamics of cerebral vasculature at large penetration depths and microscale resolution is fundamentally important to decipher brain diseases. Among the various imaging technologies, three-photon (3P) microscopy is of significance by virtue of its deep-penetrating capability and submicron resolution, which especially benefits in vivo vascular imaging. Aggregation-induced emission luminogens (AIEgens) have been recognized to be extraordinarily powerful as 3P probes. However, systematic studies on the structure-performance relationship of 3P AIEgens have been seldom reported. Herein, a series of AIEgens has been designed and synthesized. By intentionally introducing benzene rings onto electron donors (D) and acceptors (A), the molecular distortion, conjugation strength, and the D-A relationship can be facilely manipulated. Upon encapsulation with DSPE-PEG2000, the optimized AIEgens are successfully applied for 3P microscopy with emission in the far-red/near-infrared-I (NIR-I, 700-950 nm) region under the near-infrared-III (NIR-III, 1600-1870 nm) excitation. Impressively, using mice with an opened skull, vasculature within 1700 μm and a microvessel with a diameter of 2.2 μm in deep mouse brain were clearly visualized. In addition, the hemodynamics of blood vessels were well-characterized. Thus, this work not only proposes a molecular design strategy of 3P AIEgens but also promotes the performance of 3P imaging in cerebral vasculature.
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Affiliation(s)
- Zhourui Xu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Zhijun Zhang
- Center for AIE Research, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Material Science and Engineering, Shenzhen University, Shenzhen 518060, China
| | - Xiangquan Deng
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Jiangao Li
- Center for AIE Research, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Material Science and Engineering, Shenzhen University, Shenzhen 518060, China
| | - Yihang Jiang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong
| | - Chengbin Yang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Wanjian Zhang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Xiaolin Chen
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Ke Wang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Dong Wang
- Center for AIE Research, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Material Science and Engineering, Shenzhen University, Shenzhen 518060, China
| | - Gaixia Xu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
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12
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Xu Z, Jiang Y, Shen Y, Tang L, Hu Z, Lin G, Law WC, Ma M, Dong B, Yong KT, Xu G, Tao Y, Chen R, Yang C. A biocompatible photosensitizer with a high intersystem crossing efficiency for precise two-photon photodynamic therapy. Mater Horiz 2022; 9:1283-1292. [PMID: 35170613 DOI: 10.1039/d1mh01869h] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Photodynamic efficiency is strongly dependent on the generation rate of reactive oxygen species (ROS) and the tissue penetration depth. Recent advances in materials science reveal that organic molecules with room-temperature phosphorescence (RTP) can potentially serve as efficient photosensitizers owing to their limited dark cytotoxicity and abundant triplet excitons upon light irradiation. In this study, we combine RTP materials with two-photon excitation to improve the ROS generation, therapeutic precision, and tissue penetration of photodynamic therapy. We successfully prepared a novel RTP-based photosensitizer (BF2DCz) with a high photoluminescence quantum yield of 47.7 ± 3% and a remarkable intersystem crossing efficiency of ∼90.3%. By encapsulation into the bovine serum albumin (BSA) matrix, BF2DCz-BSA exhibits excellent biocompatibility, negligible dark toxicity, and superior photostability. Excitation using a femtosecond laser causes BF2DCz-BSA to efficiently generate ROS and precisely exert cell damage at the desired location.
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Affiliation(s)
- Zhourui Xu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, 1066th Xueyuan Rd, Nanshan District, Shenzhen, Guangdong Province, China.
| | - Yihang Jiang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, 1066th Xueyuan Rd, Nanshan District, Shenzhen, Guangdong Province, China.
| | - Yuanyuan Shen
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, 1066th Xueyuan Rd, Nanshan District, Shenzhen, Guangdong Province, China.
| | - Lele Tang
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9th Wenyuan Road, Nanjing 210023, China.
| | - Zulu Hu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, 1066th Xueyuan Rd, Nanshan District, Shenzhen, Guangdong Province, China.
| | - Guimiao Lin
- Base for International Science and Technology Cooperation: Carson Cancer Stem Cell Vaccines R&D Center, Shenzhen Key Lab of Synthetic Biology, Department of Physiology, School of Basic Medical Sciences, Shenzhen University, 1066th Xueyuan Rd, Nanshan District, Shenzhen, Guangdong Province, China
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, 11th YukChoi Rd, Hong Hum, Kowloon, Hong Kong
| | - Mingze Ma
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, 1066th Xueyuan Rd, Nanshan District, Shenzhen, Guangdong Province, China.
| | - Biqin Dong
- Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, College of Civil and Transportation Engineering, Shenzhen University, 3688th Nanhai Rd, Nanshan District, Shenzhen, Guangdong Province, China
| | - Ken-Tye Yong
- School of Biomedical Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia
- The University of Sydney Nano Institute, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Gaixia Xu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, 1066th Xueyuan Rd, Nanshan District, Shenzhen, Guangdong Province, China.
| | - Ye Tao
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9th Wenyuan Road, Nanjing 210023, China.
| | - Runfeng Chen
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9th Wenyuan Road, Nanjing 210023, China.
| | - Chengbin Yang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, 1066th Xueyuan Rd, Nanshan District, Shenzhen, Guangdong Province, China.
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13
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Yang C, Lin ZI, Chen JA, Xu Z, Gu J, Law WC, Yang JHC, Chen CK. Organic/Inorganic Self-Assembled Hybrid Nano-Architectures for Cancer Therapy Applications. Macromol Biosci 2021; 22:e2100349. [PMID: 34735739 DOI: 10.1002/mabi.202100349] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [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: 08/31/2021] [Revised: 10/25/2021] [Indexed: 12/20/2022]
Abstract
Since the conceptualization of nanomedicine, numerous nanostructure-mediated drug formulations have progressed into clinical trials for treating cancer. However, recent clinical trial results indicate such kind of drug formulations has a limited improvement on the antitumor efficacy. This is due to the biological barriers associated with those formulations, for example, circulation stability, extravasation efficiency in tumor, tumor penetration ability, and developed multi-drug resistance. When employing for nanomedicine formulations, pristine organic-based and inorganic-based nanostructures have their own limitations. Accordingly, organic/inorganic (O/I) hybrids have been developed to integrate the merits of both, and to minimize their intrinsic drawbacks. In this context, the recent development in O/I hybrids resulting from a self-assembly strategy will be introduced. Through such a strategy, organic and inorganic building blocks can be self-assembled via either chemical covalent bonds or physical interactions. Based on the self-assemble procedure, the hybridization of four organic building blocks including liposomes, micelles, dendrimers, and polymeric nanocapsules with five functional inorganic nanoparticles comprising gold nanostructures, magnetic nanoparticles, carbon-based materials, quantum dots, and silica nanoparticles will be highlighted. The recent progress of these O/I hybrids in advanced modalities for combating cancer, such as, therapeutic agent delivery, photothermal therapy, photodynamic therapy, and immunotherapy will be systematically reviewed.
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Affiliation(s)
- Chengbin Yang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, 518060, China
| | - Zheng-Ian Lin
- Polymeric Biomaterials Laboratory, Department of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan
| | - Jian-An Chen
- Polymeric Biomaterials Laboratory, Department of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan
| | - Zhourui Xu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, 518060, China
| | - Jiayu Gu
- Department of Pharmacy, The Second Clinical Medical College (Shenzhen People's Hospital), Jinan University, Shenzhen, 518020, China
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
| | - Jason Hsiao Chun Yang
- Department of Fiber and Composite Materials, Feng Chia University, Taichung, 40724, Taiwan
| | - Chih-Kuang Chen
- Polymeric Biomaterials Laboratory, Department of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan
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14
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Huang J, Xu Z, Jiang Y, Law WC, Dong B, Zeng X, Ma M, Xu G, Zou J, Yang C. Metal organic framework-coated gold nanorod as an on-demand drug delivery platform for chemo-photothermal cancer therapy. J Nanobiotechnology 2021; 19:219. [PMID: 34281545 PMCID: PMC8287674 DOI: 10.1186/s12951-021-00961-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 07/11/2021] [Indexed: 12/17/2022] Open
Abstract
Chemo-photothermal therapy based on nanoparticles has emerged as a promising strategy for cancer treatment. However, its therapeutic efficacy and application potential are largely subjected to the uncontrollability and biotoxicity of functional nanoplatforms. Herein, a novel biocompatible and biodegradable metal organic framework (MOF), which was constructed by growing crystalline zeolitic imidazolate framework-8 on gold nanoroad (Au@ZIF-8), was designed and fabricated for efficient drug loading and controlled release. Owing to the large surface area and guest-matching pore size of ZIF-8, doxorubicin (DOX) was successfully loaded into the Au@ZIF-8 with a high drug loading efficiency of ~ 37%. Under NIR light or weakly acidic environment, the ZIF-8 layer was quickly degraded, which resulted in an on-demand drug release in tumour site. More importantly, under the irradiation of near infrared (NIR) laser, highly efficient cancer treatment was achieved in both in vitro cell experiment and in vivo tumour-bearing nude mice experiment due to the synergistic effect of photothermal (PTT) therapy and chemotherapy. In addition, the in vivo study revealed the good biocompatibility of Au@ZIF-8. This work robustly suggested that Au@ZIF-8 could be further explored as a drug delivery system for chemo-photothermal synergistic therapy.
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Affiliation(s)
- Junfeng Huang
- Shenzhen Key Laboratory of Special Functional Materials & Shenzhen Engineering Laboratory for Advance Technology of Ceramics, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Zhourui Xu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, 518060, China
| | - Yihang Jiang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, 518060, China
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, 999077, China
| | - Biqin Dong
- Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Xierong Zeng
- Shenzhen Key Laboratory of Special Functional Materials & Shenzhen Engineering Laboratory for Advance Technology of Ceramics, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Mingze Ma
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, 518060, China
| | - Gaixia Xu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, 518060, China.
| | - Jizhao Zou
- Shenzhen Key Laboratory of Special Functional Materials & Shenzhen Engineering Laboratory for Advance Technology of Ceramics, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, China.
| | - Chengbin Yang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, 518060, China.
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15
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Xu Z, Rao N, Tang CY, Law WC. Seawater Desalination by Interfacial Solar Vapor Generation Method Using Plasmonic Heating Nanocomposites. Micromachines (Basel) 2020; 11:mi11090867. [PMID: 32962173 PMCID: PMC7570019 DOI: 10.3390/mi11090867] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 09/15/2020] [Accepted: 09/16/2020] [Indexed: 12/02/2022]
Abstract
With the ever-growing demand in fresh water supply, great efforts have been devoted to developing sustainable systems which could generate fresh water continuously. Solar vapor generation is one of the promising strategies which comprise an unlimited energy source and efficient solar-to-heat generators for overcoming fresh water scarcity. However, current solar vapor generation systems suffer either from inefficient utilization of solar energy or an expensive fabrication process. In this paper, we introduced a nano-plasmonic approach, i.e., a floatable nanocompoiste where copper sulfide nanorods (Cu2-xS NRs) are embedded in a polyvinyl alcohol (PVA) matrix, for solar-to-vapor generation. A high solar vapor generation efficiency of ~87% and water evaporation rate of 1.270 kg m−2 h−1 were achieved under simulated solar irradiation of 1 sun. With the illumination of natural daylight, seawater was purified using Cu2-xS NRs-PVA gel, with high purity, as distilled drinking water. The plasmonic nanocomposites demonstrated here are easy to fabricate and highly efficient for solar vapor generation, illustrating a potential solution for future seawater desalination.
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16
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Wong GDH, Law WC, Tan FN, Gan WL, Ang CCI, Xu Z, Seet CS, Lew WS. Thermal behavior of spin-current generation in Pt xCu 1-x devices characterized through spin-torque ferromagnetic resonance. Sci Rep 2020; 10:9631. [PMID: 32541818 PMCID: PMC7295739 DOI: 10.1038/s41598-020-66762-8] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 05/07/2020] [Indexed: 11/30/2022] Open
Abstract
High temperature studies of spin Hall effect have often been neglected despite its profound significance in real-world devices. In this work, high temperature spin torque ferromagnetic resonance measurement was performed to evaluate the effects of temperature on the Gilbert damping and spin Hall efficiency of PtxCu1−x. When the temperature was varied from 300 K to 407 K, the Gilbert damping was relatively stable with a change of 4% at composition x = 66%. Alloying Pt and Cu improved the spin Hall efficiency of Pt75Cu25/Co/Ta by 29% to a value of 0.31 ± 0.03 at 407 K. However, the critical switching current density is dependent on the ratio between the Gilbert damping and spin Hall efficiency and the smallest value was observed when x = 47%. It was found that at this concentration, the spin transparency was at its highest at 0.85 ± 0.09 hence indicating the importance of interfacial transparency for energy efficient devices at elevated temperature.
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Affiliation(s)
- G D H Wong
- School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.,GLOBALFOUNDRIES Singapore Pte, Ltd., Singapore, 738406, Singapore
| | - W C Law
- School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.,GLOBALFOUNDRIES Singapore Pte, Ltd., Singapore, 738406, Singapore
| | - F N Tan
- School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.,GLOBALFOUNDRIES Singapore Pte, Ltd., Singapore, 738406, Singapore
| | - W L Gan
- School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - C C I Ang
- School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Z Xu
- School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - C S Seet
- GLOBALFOUNDRIES Singapore Pte, Ltd., Singapore, 738406, Singapore
| | - W S Lew
- School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.
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17
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Chen CK, Huang PK, Law WC, Chu CH, Chen NT, Lo LW. Biodegradable Polymers for Gene-Delivery Applications. Int J Nanomedicine 2020; 15:2131-2150. [PMID: 32280211 PMCID: PMC7125329 DOI: 10.2147/ijn.s222419] [Citation(s) in RCA: 87] [Impact Index Per Article: 21.8] [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: 07/08/2019] [Accepted: 02/04/2020] [Indexed: 12/24/2022] Open
Abstract
Gene-based therapies have emerged as a new modality for combating a myriad of currently incurable diseases. However, the fragile nature of gene therapeutics has significantly hampered their biomedical applications. Correspondingly, the development of gene-delivery vectors is of critical importance for gene-based therapies. To date, a variety of gene-delivery vectors have been created and utilized for gene delivery. In general, they can be categorized into viral- and non-viral vectors. Due to safety issues associated with viral vectors, non-viral vectors have recently attracted much more research focus. Of these non-viral vectors, polymeric vectors, which have been preferred due to their low immunogenicity, ease of production, controlled chemical composition and high chemical versatility, have constituted an ideal alternative to viral vectors. In particular, biodegradable polymers, which possess advantageous biocompatibility and biosafety, have been considered to have great potential in clinical applications. In this context, the aim of this review is to introduce the recent development and progress of biodegradable polymers for gene delivery applications, especially for their chemical structure design, gene delivery capacity and additional biological functions. Accordingly, we first define and categorize biodegradable polymers, followed by describing their corresponding degradation mechanisms. Various types of biodegradable polymers resulting from natural and synthetic polymers will be introduced and their applications in gene delivery will be examined. Finally, a future perspective regarding the development of biodegradable polymer vectors will be given.
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Affiliation(s)
- Chih-Kuang Chen
- Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung80424, Taiwan
| | - Ping-Kuan Huang
- Department of Fiber and Composite Materials, Feng Chia University, Taichung40724, Taiwan
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, People’s Republic of China
| | - Chia-Hui Chu
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Zhunan35053, Taiwan
| | - Nai-Tzu Chen
- Institute of New Drug Development, China Medical University, Taichung40402, Taiwan
| | - Leu-Wei Lo
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Zhunan35053, Taiwan
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18
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Goh CH, Lau BL, Teong SY, Law WC, Tan CS, Vasu R, Liew D. Comparing the outcome of monitored anaesthesia care and local anaesthesia for carpal tunnel syndrome surgery by neurosurgeons. Med J Malaysia 2019; 74:499-503. [PMID: 31929475] [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] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
INTRODUCTION Carpal tunnel syndrome (CTS) is the commonest median nerve entrapment neuropathy of the hand, up to 90% of all nerve compression syndromes. The disease is often treated with conservative measures or surgery. The senior author initially intended to treat his own neurosurgical patients concurrently diagnosed with carpal tunnel syndrome in 2014, subsequently, he began to pick up more referrals from the primary healthcare group over the years. This has led to the setup of a peripheral and spine clinic to act as a hub of referrals. OBJECTIVE Department of Neurosurgery Sarawak aimed to evaluate the surgical outcome of carpal tunnel release done over five years. METHODS The carpal tunnel surgeries were done under local anaesthesia (LA) given by neurosurgeons (Bupivacaine 0.5% or Lignocaine 2%). Monitored anaesthesia care (MAC) was later introduced by our hospital neuroanaesthetist in the beginning of 2018 (Target-controlled infusion propofol and boluses of fentanyl). We looked into our first 17 cases and compared these to the two anaesthesia techniques (LA versus MAC + LA) in terms of patient's pain score based on visual analogue scale (VAS). RESULTS Result showed MAC provided excellent pain control during and immediately after the surgery. None experienced anaesthesia complications. There was no difference in pain control at post-operation one month. Both techniques had equal good clinical outcome during patients' clinic follow up. CONCLUSION Neurosurgeons provide alternative route for CTS patients to receive surgical treatment. Being a designated pain free hospital, anaesthetist collaboration in carpal tunnel surgery is an added value and improves patients overall experience and satisfaction.
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Affiliation(s)
- C H Goh
- Sarawak General Hospital, Department of Neurosurgery, Kuching, Sarawak, Malaysia.
| | - B L Lau
- Sarawak General Hospital, Department of Neurosurgery, Kuching, Sarawak, Malaysia
| | - S Y Teong
- Sarawak General Hospital, Department of Neurosurgery, Kuching, Sarawak, Malaysia
| | - W C Law
- Sarawak General Hospital, Department of Internal medicine, Neurology unit, Kuching, Sarawak, Malaysia
| | - C S Tan
- Sarawak General Hospital, Department of Anaesthesiology and intensive care, Kuching, Sarawak, Malaysia
| | - R Vasu
- Sarawak General Hospital, Department of Neurosurgery, Kuching, Sarawak, Malaysia
| | - D Liew
- Sarawak General Hospital, Department of Neurosurgery, Kuching, Sarawak, Malaysia
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19
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Xu Z, Rao N, Tang CY, Cheng CH, Law WC. Aqueous Phase Synthesis of Cu 2-x S Nanostructures and Their Photothermal Generation Study. ACS Omega 2019; 4:14655-14662. [PMID: 31528822 PMCID: PMC6740407 DOI: 10.1021/acsomega.9b02204] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 08/13/2019] [Indexed: 05/07/2023]
Abstract
Size- and shape-dependent features of plasmonic nanocrystals govern the development of their applications. In the past decades, gold nanostructures, such as gold nanorods and nanoshells, have been well studied and applied for sensing, bioimaging, and photothermal generation. However, knowledge of copper chalcogenide, a new generation of plasmonic nanomaterials, is limited, especially about their preparation and size- and shape-dependent photothermal properties. In this work, controllable size and shape Cu2-x S nanocrystals (NCs) are synthesized by a facile aqueous route. Using low-molecular-weight polyethylenimine (PEI) as the reducing and capping agents, the size and shape of Cu2-x S NCs can be controlled with lengths from 6.5 to 46.5 nm and the aspect ratio from 2.2 to 7.5 by adjusting the concentration of PEI. The plasmonic peak of Cu2-x S experiences a redshift (from 1145 to 1369 nm) when the length increases from 6.5 to 44.5 nm. Under the irradiation of 1064 nm laser with 1.33 W/cm2, an excellent photothermal conversion rate (from 34.9 to 49.0%) is obtained. The characterization of Cu2-x S NCs is conducted with a UV-vis spectrometer, transmission electron microscopy, powder X-ray diffraction measurements, and 1064 nm laser.
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Affiliation(s)
- Zhourui Xu
- Department
of Industrial and Systems Engineering, The
Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, P. R. China
| | - Nanxi Rao
- Department
of Industrial and Systems Engineering, The
Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, P. R. China
| | - Chak-Yin Tang
- Department
of Industrial and Systems Engineering, The
Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, P. R. China
| | - Ching-Hsiang Cheng
- Department
of Industrial and Systems Engineering, The
Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, P. R. China
- School
of Automotive Engineering, Wuhan University
of Technology, Wuhan, Hubei 430070, P. R. China
| | - Wing-Cheung Law
- Department
of Industrial and Systems Engineering, The
Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, P. R. China
- E-mail:
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20
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Chen L, Dong Y, Tang CY, Zhong L, Law WC, Tsui GCP, Yang Y, Xie X. Development of Direct-Laser-Printable Light-Powered Nanocomposites. ACS Appl Mater Interfaces 2019; 11:19541-19553. [PMID: 31059220 DOI: 10.1021/acsami.9b05871] [Citation(s) in RCA: 10] [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] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Four-dimensional (4D) printable light-powered materials have emerged as a new generation of materials for the development of functional devices. The design of these types of materials is mostly based on the trans-cis transformation of azobenzene moieties in a liquid crystalline elastomer (LCE) matrix, in which the motion is triggered by ultraviolet (UV) irradiation. In this paper, we first report on a direct laser printable photoresist for producing light-powered 4D structures with enhanced mechanical properties and near-infrared (NIR) responsive mechanical deformation. The reported nanocomposite design is based on the photothermal effects of gold nanorods (AuNRs), which can induce the nematic-to-isotropic transition of LCE upon exposure to NIR irradiation. The miscibility between AuNRs and LCE is enhanced by thiol functionalization. Appropriate printing parameters are determined, and nanocomposites containing 0-3 wt % of AuNR loading are fabricated via femtosecond two-photon direct laser writing. The effects of the AuNR loading fraction and laser power on the light-powered actuating performance are evaluated. It is found that the nanocomposite with AuNR loading of 3 wt % demonstrates the maximum percentage (20%) of elongation under an NIR laser power of 2 W. An increase in laser power can lead to faster deformation but slower restoration. The nanocomposites demonstrate relatively good stability. Even after 300 actuation cycles, 80% of the elongation magnitude can be retained. In addition, an improvement of 80% in the complex modulus of the nanocomposites, due to the inclusion of AuNRs, is observed.
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Affiliation(s)
| | | | | | - Lei Zhong
- School of Chemistry and Chemical Engineering, Guangxi Key Laboratory for Polysaccharide Materials and Modifications , Guangxi University for Nationalities , Nanning , Guangxi 530006 , China
| | | | | | - Yingkui Yang
- School of Chemistry and Materials Science , South-Central University for Nationalities , Wuhan , Hubei 430074 , China
| | - Xiaolin Xie
- School of Chemistry and Chemical Engineering , Huazhong University of Science and Technology , Wuhan , Hubei 430074 , China
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21
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Gong X, Cheng C, Tang CY, Law WC, Lin X, Chen Y, Chen L, Tsui GCP, Rao N. Crystallization behavior of polylactide matrix under the influence of nano-magnetite. POLYM ENG SCI 2019. [DOI: 10.1002/pen.24976] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xinghou Gong
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing; School of Materials and Chemistry Engineering, Hubei University of Technology; Wuhan Hubei Province, 430068 China
- Department of Industrial and Systems Engineering; The Hong Kong Polytechnic University; Hung Hom, Kowloon, Hong Kong SAR China
| | - Cheng Cheng
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing; School of Materials and Chemistry Engineering, Hubei University of Technology; Wuhan Hubei Province, 430068 China
| | - Chak Yin Tang
- Department of Industrial and Systems Engineering; The Hong Kong Polytechnic University; Hung Hom, Kowloon, Hong Kong SAR China
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering; The Hong Kong Polytechnic University; Hung Hom, Kowloon, Hong Kong SAR China
| | - Xueting Lin
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing; School of Materials and Chemistry Engineering, Hubei University of Technology; Wuhan Hubei Province, 430068 China
| | - Yehuang Chen
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing; School of Materials and Chemistry Engineering, Hubei University of Technology; Wuhan Hubei Province, 430068 China
| | - Ling Chen
- Department of Industrial and Systems Engineering; The Hong Kong Polytechnic University; Hung Hom, Kowloon, Hong Kong SAR China
| | - Gary Chi Pong Tsui
- Department of Industrial and Systems Engineering; The Hong Kong Polytechnic University; Hung Hom, Kowloon, Hong Kong SAR China
| | - Nanxi Rao
- Department of Industrial and Systems Engineering; The Hong Kong Polytechnic University; Hung Hom, Kowloon, Hong Kong SAR China
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22
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Chen CK, Lee MC, Lin ZI, Lee CA, Tung YC, Lou CW, Law WC, Chen NT, Lin KYA, Lin JH. Intensifying the Antimicrobial Activity of Poly[2-( tert-butylamino)ethyl Methacrylate]/Polylactide Composites by Tailoring Their Chemical and Physical Structures. Mol Pharm 2019; 16:709-723. [PMID: 30589552 DOI: 10.1021/acs.molpharmaceut.8b01011] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 02/07/2023]
Abstract
Poly[2-( tert-butylaminoethyl) methacrylate] (PTA), an important class of antimicrobial polymers, has demonstrated its great biocidal efficiency, favorable nontoxicity, and versatile applicability. To further enhance its antimicrobial efficiency, an optimization of the chemical structure of PTA polymers is performed via atom transfer radical polymerization (ATRP) in terms of the antimicrobial ability against Escherichia coli ( E. coli) and Staphylococcus aureus ( S. aureus). After the optimization, the resulting PTA is blended into a polylactide (PLA) matrix to form PTA/PLA composite thin films. It is first found, that the antimicrobial efficiency of PTA/PLA composites was significantly enhanced by controlling the PLA crystallinity and the PLA spherulite size. A possible mechanistic route regarding this new finding has been rationally discussed. Lastly, the cytotoxicity and mechanical properties of a PTA/PLA composite thin film exhibiting the best biocidal effect are evaluated for assessing its potential as a new material for creating antimicrobial biomedical devices.
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Affiliation(s)
- Chih-Kuang Chen
- Department of Chemical Engineering and Materials Engineering , National Yunlin University of Science and Technology , Yunlin 64002 , Taiwan
| | - Mong-Chuan Lee
- Graduate Institute of Biotechnology and Biomedical Engineering , Central Taiwan University of Science and Technology , Taichung 40601 , Taiwan
| | - Zheng-Ian Lin
- Department of Chemical Engineering and Materials Engineering , National Yunlin University of Science and Technology , Yunlin 64002 , Taiwan
| | - Chun-An Lee
- Department of Fiber and Composite Materials , Feng Chia University , Taichung 40724 , Taiwan
| | - Yu-Chieh Tung
- Department of Fiber and Composite Materials , Feng Chia University , Taichung 40724 , Taiwan
| | - Ching-Wen Lou
- College of Textile and Clothing , Qingdao University , Shangdong 266071 , China.,Department of Chemical Engineering and Materials , Ocean College, Minjiang University , Fuzhou 350108 , China.,Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textiles , Tianjin Polytechnic University , Tianjin 300387 , China.,Department of Bioinformatics and Medical Engineering , Asia University , Taichung 41354 , Taiwan
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering , The Hong Kong Polytechnic University , Hung Hom, Kowloon , Hong Kong SAR , China
| | - Nai-Tzu Chen
- Institute of New Drug Development , China Medical University , Taichung 40402 , Taiwan
| | - Kun-Yi Andrew Lin
- Department of Environmental Engineering , National Chung Hsing University , Taichung 40227 , Taiwan
| | - Jia-Horng Lin
- Department of Fiber and Composite Materials , Feng Chia University , Taichung 40724 , Taiwan.,College of Textile and Clothing , Qingdao University , Shangdong 266071 , China.,Department of Chemical Engineering and Materials , Ocean College, Minjiang University , Fuzhou 350108 , China.,Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textiles , Tianjin Polytechnic University , Tianjin 300387 , China.,School of Chinese Medicine , China Medical University , Taichung 40402 , Taiwan.,Department of Fashion Design , Asia University , Taichung 41354 , Taiwan
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Abstract
Wearable sensing technologies are vital for realizing personalized health monitoring. Noninvasive human sweat sampling is essential for monitoring an individual's physical state using rich physiological data. However, existing wearable sensing technologies lack the controlled capture of body sweat and in performing on-device measurement without inflammatory contact. Herein, we report the development of a wearable sweat-capture device using patterned graphene arrays with controlled superwettability and electrical conductivity for simultaneously capturing and electrochemically measuring sweat droplets. The sweat droplets exhibited strong attachment on the superhydrophilic graphene patterns, even during moderate exercising. The captured sweat droplets present strong electrochemical signals using graphene films as the working electrode and metal pins as the counter electrode arrays assembled on 3D printed holders, at the detection limit of 6 μM for H2O2 sensing. This research enables full-body spatiotemporal mapping of sweat, which is beneficial for a broad range of personalized monitoring applications, such as drug abuse detection, athletics performance optimization, and physiological wellness tracking.
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Affiliation(s)
- Guijun Li
- Advanced Manufacturing Technology Research Centre, Department of Industrial and Systems Engineering , Hong Kong Polytechnic University , Hung Hom , Hong Kong
| | - Xiaoyong Mo
- Advanced Manufacturing Technology Research Centre, Department of Industrial and Systems Engineering , Hong Kong Polytechnic University , Hung Hom , Hong Kong
| | - Wing-Cheung Law
- Advanced Manufacturing Technology Research Centre, Department of Industrial and Systems Engineering , Hong Kong Polytechnic University , Hung Hom , Hong Kong
| | - Kang Cheung Chan
- Advanced Manufacturing Technology Research Centre, Department of Industrial and Systems Engineering , Hong Kong Polytechnic University , Hung Hom , Hong Kong
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24
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Wang X, Liu X, Wang L, Tang CY, Law WC, Zhang G, Liao Y, Liu C, Liu Z. Synthesis of Yolk–Shell Polymeric Nanocapsules Encapsulated with Monodispersed Upconversion Nanoparticle for Dual-Responsive Controlled Drug Release. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01770] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Xiaotao Wang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center for Green Light-weight Materials and Processing, School of Materials Science and Engineering, Hubei University of Technology, Wuhan, Hubei Province 430068, P. R. China
| | - Xiaoping Liu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center for Green Light-weight Materials and Processing, School of Materials Science and Engineering, Hubei University of Technology, Wuhan, Hubei Province 430068, P. R. China
| | - Li Wang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center for Green Light-weight Materials and Processing, School of Materials Science and Engineering, Hubei University of Technology, Wuhan, Hubei Province 430068, P. R. China
| | - Chak-Yin Tang
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, P. R. China
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, P. R. China
| | - Gaowen Zhang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center for Green Light-weight Materials and Processing, School of Materials Science and Engineering, Hubei University of Technology, Wuhan, Hubei Province 430068, P. R. China
| | - Yonggui Liao
- Key Laboratory for Large-Format Battery Materials and System, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Chuang Liu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center for Green Light-weight Materials and Processing, School of Materials Science and Engineering, Hubei University of Technology, Wuhan, Hubei Province 430068, P. R. China
| | - Zuifang Liu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center for Green Light-weight Materials and Processing, School of Materials Science and Engineering, Hubei University of Technology, Wuhan, Hubei Province 430068, P. R. China
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25
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Viswanathan S, Rose N, Arip M, Chai CH, Law WC, Sim R, Ong MC. Multiple sclerosis and neuromyelitis optica spectrum disorders in Malaysia: A comparison in different ethnic groups. Mult Scler Relat Disord 2018; 25:300-308. [PMID: 30172173 DOI: 10.1016/j.msard.2018.07.003] [Citation(s) in RCA: 12] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 05/30/2018] [Accepted: 07/01/2018] [Indexed: 02/08/2023]
Abstract
We performed a retrospective observational analytical study looking at the frequencies and characteristics of multiple sclerosis(MS) and neuromyelitis optica spectrum disorders(NMOSD) in consecutive patients with idiopathic inflammatory demyelinating disease (IIDDs) attending three centers (2009-2017). Of 523 patients with IIDDs, there were 173 patients with NMOSD and 230 patients with MS. The percentage of NMOSD: IIDDs was 33%. The percentage of NMOSD:Total MS and NMOSD cohort was 43%. Of 141 seropositive NMOSD patients, 134(95%) were from the three main ethnic groups. The percentage of seropositive NMOSD to IIDDs and to combined MS and NMOSD was 26.9% and 35% respectively. Ratios of MS to NMOSD were nearly equal at 1.3 to 1.0, reinforcing the high ratio of NMOSD to MS in Asia. Nearly half of the Chinese cohort were seropositive ie; 71/141 (50%) with the remainder being Malays; 56/141 (39.7%) and Indians; 7/141 (5%). Amongst the other indigenous groups seropositivity was seen in 2 each of Iban, Bajau, Kadazan descent as well as one of Bidayuh origin. Comparatively, seropositivity in NMOSD is commoner amongst the Chinese compared to the Malays (p ≤ 0.005) and Indians, p ≤ 0.05 with ratios as high as 10:1. In the MS group of 230 subjects, 123(53.5%) were Malays (ratio of MS:NMOSD of 2:1), 41(17.8%) were Chinese, (ratio of MS:NMOSD of 0.5:1.0) and 54 (23.5%)were Indians (ratios of MS:NMOSD of 5:1 amongst the Indians). The remainder from East Malaysia were made up of 2 each of Kadazans, Ibans and Bajaus including 3 each of Bidayuh and Eurasian descent. Comparatively, in the NMOSD and MS cohorts a female preponderance was noted more so amongst Chinese NMOSD patients, with rare familial occurrence in both but more in Malay MS/NMOSD patients. This study also highlighted some of the inter-ethnic differences in presentation of MS and NMOSD amongst the 3 main ethnic races in Malaysia and confirms indigenous races having MS/NMOSD which needs further research. It also reviewed current literature on similar inter-ethnic differences world wide. To conclude, MS and NMOSD are the commonest demyelinating diseases seen in Malaysia with interesting inter-ethnic differences and similarities.
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Affiliation(s)
- S Viswanathan
- Department of Neurology, Kuala Lumpur Hospital, Kuala Lumpur, Ministry of Health of Malaysia.
| | - N Rose
- Department of Radiology, Kuala Lumpur Hospital, Kuala Lumpur, Ministry of Health of Malaysia
| | - M Arip
- Department of Immunology, Medical Research Institute, Kuala Lumpur, Ministry of Health of Malaysia
| | - C H Chai
- Department of Neurology, Sarawak General Hospital, Kuching, Sarawak, Ministry of Health of Malaysia
| | - W C Law
- Department of Neurology, Sarawak General Hospital, Kuching, Sarawak, Ministry of Health of Malaysia
| | - R Sim
- Department of Neurology, Sarawak General Hospital, Kuching, Sarawak, Ministry of Health of Malaysia
| | - M C Ong
- Department of Medicine, Queen Elizabeth Hospital, Kota Kinabalu, Sabah, Ministry of Health of Malaysia
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Gong X, Gao X, Tang CY, Law WC, Chen L, Hu T, Wu C, Tsui CP, Rao N. Compatibilization of poly(lactic acid)/high impact polystyrene interface using copolymer poly(stylene-ran-methyl acrylate). J Appl Polym Sci 2017. [DOI: 10.1002/app.45799] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xinghou Gong
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing, School of Materials and Chemistry Engineering; Hubei University of Technology; Wuhan Hubei Province 430068 People's Republic of China
- Department of Industrial and Systems Engineering; The Hong Kong Polytechnic University; Hung Hom Kowloon Hong Kong, People's Republic of China
| | - Xiang Gao
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing, School of Materials and Chemistry Engineering; Hubei University of Technology; Wuhan Hubei Province 430068 People's Republic of China
| | - Chak Yin Tang
- Department of Industrial and Systems Engineering; The Hong Kong Polytechnic University; Hung Hom Kowloon Hong Kong, People's Republic of China
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering; The Hong Kong Polytechnic University; Hung Hom Kowloon Hong Kong, People's Republic of China
| | - Ling Chen
- Department of Industrial and Systems Engineering; The Hong Kong Polytechnic University; Hung Hom Kowloon Hong Kong, People's Republic of China
| | - Tao Hu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing, School of Materials and Chemistry Engineering; Hubei University of Technology; Wuhan Hubei Province 430068 People's Republic of China
| | - Chonggang Wu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing, School of Materials and Chemistry Engineering; Hubei University of Technology; Wuhan Hubei Province 430068 People's Republic of China
| | - Chi Pong Tsui
- Department of Industrial and Systems Engineering; The Hong Kong Polytechnic University; Hung Hom Kowloon Hong Kong, People's Republic of China
| | - Nanxi Rao
- Department of Industrial and Systems Engineering; The Hong Kong Polytechnic University; Hung Hom Kowloon Hong Kong, People's Republic of China
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27
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Hong L, Cheung TL, Rao N, Ouyang Q, Wang Y, Zeng S, Yang C, Cuong D, Chong PHJ, Liu L, Law WC, Yong KT. Millifluidic synthesis of cadmium sulfide nanoparticles and their application in bioimaging. RSC Adv 2017. [DOI: 10.1039/c7ra05401g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this work, a miniature fluidic synthesis platform utilizing millimeter dimension channels yielding highly reproducible batch synthesis of luminescent cadmium sulfide (CdS) quantum dots and nanocrystals is demonstrated.
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28
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Liu J, Yang C, Liu J, Hu R, Hu Y, Chen H, Law WC, Swihart MT, Ye L, Wang K, Yong KT. Effects of Cd-based Quantum Dot Exposure on the Reproduction and Offspring of Kunming Mice over Multiple Generations. Nanotheranostics 2017; 1:23-37. [PMID: 29071177 PMCID: PMC5646726 DOI: 10.7150/ntno.17753] [Citation(s) in RCA: 16] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Accepted: 11/22/2016] [Indexed: 11/15/2022] Open
Abstract
The potential health risks associated with heavy-metal containing quantum dots (QDs) are a major concern accompanying their increased application in both research and industry. In this contribution, we investigate the effects of QDs on reproductive outcomes in Kunming mice across three generations. Rather than being exposed to QDs during pregnancy, mice were intravenously injected with phospholipid micelle encapsulated CdSe/CdS/ZnS QDs at a dosage of 0.81 mg Cd/kg two weeks before mating. Four treatment groups were studied: non-injected control, female injected, male injected and both parents injected with QDs. Although QDs accumulated in the major organs of treated mice, we did not detect any pregnancy complications or adverse effects. No significant difference in pregnancy outcomes could be identified between the QD treated groups and the control group. More importantly, through behavior monitoring, blood tests and histological evaluations, two generations of the offspring were observed to be in normal and healthy condition. Our results show that QD exposure with a short buffering period before conception does not cause obvious pregnancy complications or significant toxicity effects in treated mice or their offspring. This indicates that a short buffering period after QD exposure may reduce potential risk of QDs to reproductive health.
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Affiliation(s)
- Jianwei Liu
- Institute of Gerontology and Geriatrics, Chinese PLA General Hospital, Beijing Key Lab of Aging and Geriatrics, Beijing 100853, PR China
| | - Chengbin Yang
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Jing Liu
- Institute of Gerontology and Geriatrics, Chinese PLA General Hospital, Beijing Key Lab of Aging and Geriatrics, Beijing 100853, PR China
| | - Rui Hu
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Yazhuo Hu
- Institute of Gerontology and Geriatrics, Chinese PLA General Hospital, Beijing Key Lab of Aging and Geriatrics, Beijing 100853, PR China
| | - Hongyan Chen
- Institute of Gerontology and Geriatrics, Chinese PLA General Hospital, Beijing Key Lab of Aging and Geriatrics, Beijing 100853, PR China
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, P.R. China
| | - Mark T Swihart
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, New York 14260-4200, USA
| | - Ling Ye
- Institute of Gerontology and Geriatrics, Chinese PLA General Hospital, Beijing Key Lab of Aging and Geriatrics, Beijing 100853, PR China
| | - Kuan Wang
- Nanomedicine Program and Institute of Biological Chemistry, Academia Sinica, Nankang, Taipei 115, Taiwan.,College of Biomedical Engineering, Taipei Medical University, Taipei 110, Taiwan
| | - Ken-Tye Yong
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
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29
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Hong L, Cheung TL, Rao N, Ouyang Q, Wang Y, Zeng S, Yang C, Dang C, Chong PHJ, Liu L, Law WC, Yong KT. Correction: Millifluidic synthesis of cadmium sulfide nanoparticles and their application in bioimaging. RSC Adv 2017. [DOI: 10.1039/c7ra90087b] [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: 11/21/2022] Open
Abstract
Correction for ‘Millifluidic synthesis of cadmium sulfide nanoparticles and their application in bioimaging’ by Liying Hong, Tai-Lok Cheung et al., RSC Adv., 2017, 7, 36819–36832.
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Law WC, Xu Z, Yong KT, Liu X, Swihart MT, Seshadri M, Prasad PN. Manganese-doped near-infrared emitting nanocrystals for in vivo biomedical imaging. Opt Express 2016; 24:17553-17561. [PMID: 27505726 DOI: 10.1364/oe.24.017553] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nanoprobes with multiple imaging modality have attracted a great deal of attention due to the capability of offering complementary information from each individual component. This work presents a hybrid approach to synthesize manganese doped near infrared (NIR) emitting quantum dots. The Mn-doping process was accomplished in aqueous phase followed by a phase transfer to organic phase for ZnS coating. This bimodal nanoprobe displayed high NIR luminescence quantum yield (~14%) and capability of magnetic resonance imaging (MRI) (1.44 mM-1 s-1). The RGD-targeted nanoprobes have been exploited for in vitro cell labelling, in vivo tumor targeting and lymph node mapping. In addition, no adverse toxic effects were observed, demonstrating the high biocompatibility of this nanoprobe.
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Yang C, Panwar N, Wang Y, Zhang B, Liu M, Toh H, Yoon HS, Tjin SC, Chong PHJ, Law WC, Chen CK, Yong KT. Biodegradable charged polyester-based vectors (BCPVs) as an efficient non-viral transfection nanoagent for gene knockdown of the BCR-ABL hybrid oncogene in a human chronic myeloid leukemia cell line. Nanoscale 2016; 8:9405-9416. [PMID: 27092903 DOI: 10.1039/c6nr00996d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
First-line therapy of chronic myelogenous leukemia (CML) has always involved the use of BCR-ABL tyrosine-kinase inhibitors which is associated with an abnormal chromosome called Philadelphia chromosome. Although the overall survival rate has been improved by the current therapeutic regime, the presence of resistance has resulted in limited efficacy. In this study, an RNA interference (RNAi)-based therapeutic regime is proposed with the aim to knockdown the BCR-ABL hybrid oncogene using small interfering RNA (siRNA). The siRNA transfection rates have usually been limited due to the declining contact probability among polyplexes and the non-adherent nature of leukemic cells. Our work aims at addressing this limitation by using a biodegradable charged polyester-based vector (BCPV) as a nanocarrier for the delivery of BCR-ABL-specific siRNA to the suspension culture of a K562 CML cell line. BCR-ABL siRNAs were encapsulated in the BCPVs by electrostatic force. Cell internalization was facilitated by the BCPV and assessed by confocal microscopy and flow cytometry. The regulation of the BCR-ABL level in K562 cells as a result of RNAi was analyzed by real-time polymerase chain reaction (RT-PCR). We observed that BCPV was able to form stable nanoplexes with siRNA molecules, even in the presence of fetal bovine serum (FBS), and successfully assisted in vitro siRNA transfection in the non-adherent K562 cells. As a consequence of downregulation of BCR-ABL, BCPV-siRNA nanoplexes inhibited cell proliferation and promoted cell apoptosis. All results were compared with a commercial transfection reagent, Lipofectamine2000™, which served as a positive control. More importantly, this class of non-viral vector exhibits biodegradable features and negligible cytotoxicity, thus providing a versatile platform to deliver siRNA to non-adherent leukemia cells with high transfection efficiency by effectively overcoming extra- and intra-cellular barriers. Due to the excellent in vitro transfection results from BCPV-siRNA, a newly developed biodegradable transfection agent, BCPV, is being probed for transfection performance in an animal model.
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Affiliation(s)
- Chengbin Yang
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
| | - Nishtha Panwar
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
| | - Yucheng Wang
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
| | - Butian Zhang
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
| | - Maixian Liu
- Department of Chemistry, University of Buffalo, The State University of New York, Buffalo, New York 14260, USA
| | - Huiting Toh
- Division of Structural Biology & Biochemistry, School of Biological Sciences, Nanyang Technological University, 639798, Singapore
| | - Ho Sup Yoon
- Division of Structural Biology & Biochemistry, School of Biological Sciences, Nanyang Technological University, 639798, Singapore and Department of Genetic Engineering, College of Life Sciences, Kyung Hee University, Yongin-si Gyeonggi-do, 446701, Republic of Korea
| | - Swee Chuan Tjin
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
| | - Peter Han Joo Chong
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, P. R. China
| | - Chih-Kuang Chen
- The Polymeric Biomaterials Lab, Department of Fiber and Composite Materials, Feng Chia University, Taichung, Taiwan 40724, Republic of China.
| | - Ken-Tye Yong
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
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Cheung TL, Hong L, Rao N, Yang C, Wang L, Lai WJ, Chong PHJ, Law WC, Yong KT. The non-aqueous synthesis of shape controllable Cu(2-x)S plasmonic nanostructures in a continuous-flow millifluidic chip for the generation of photo-induced heating. Nanoscale 2016; 8:6609-22. [PMID: 26940019 DOI: 10.1039/c5nr09144f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
In this paper, a new method for synthesizing non-aqueous copper sulfide nanocrystals with different shapes and sizes using a homemade continuous-flow millifluidic chip is presented. Conventionally, the shape control of nanocrystals was accomplished using a surfactant-controlled approach, where directional growth is facilitated by selective passivation of a particular facet of the nanocrystals using surfactants. We demonstrate a "surfactant-free" approach where different sizes and shapes (i.e. spherical, triangular prism and rod) of plasmonic copper sulfide (Cu(2-x)S) nanocrystals can be fabricated by adjusting the flow rate and precursor concentrations. As continuous-flow synthesis enables uniform heating and easy variation of precursors' stoichiometries, it serves as an excellent incubation platform for nanoparticles due to its simplicity and high reproducibility. Transmission electron microscopy (TEM), fast Fourier transform (FFT) and X-ray diffraction (XRD) techniques were used to characterize the as-synthesized nanocrystals and revealed structures ranging from copper-deficient covellite (CuS), spionkopite (Cu1.39S), roxbyite (Cu1.75S), to copper-rich djurleite (Cu1.94S). The localized surface plasmon resonance (LSPR) peak of the nanocrystals can be tuned from 1115 to 1644 nm by simply varying the copper to sulfur molar ratio and flow rate. Furthermore, photothermal effects of Cu(2-x)S nanocrystals were also demonstrated to annihilate the RAW264.7 cells upon near infra-red laser irradiation.
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Affiliation(s)
- Tai-Lok Cheung
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, P. R. China. and School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore. and State Key Laboratory in Ultra-precision Machining Technology, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, P. R. China
| | - Liying Hong
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
| | - Nanxi Rao
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, P. R. China.
| | - Chengbin Yang
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
| | - Libo Wang
- Temasek Laboratories@NTU, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, Singapore
| | - Wenn Jing Lai
- Temasek Laboratories@NTU, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, Singapore
| | - Peter Han Joo Chong
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore. and Department of Electrical and Electronic Engineering, Auckland University of Technology, New Zealand
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, P. R. China.
| | - Ken-Tye Yong
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
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Liu L, Lin G, Yin F, Law WC, Yong KT. Near-infrared fluorescent peptide probes for imaging of tumorin vivoand their biotoxicity evaluation. J Biomed Mater Res A 2016; 104:910-6. [DOI: 10.1002/jbm.a.35628] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 12/06/2015] [Accepted: 12/17/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Liwei Liu
- School of Science; Changchun University of Science and Technology; Changchun 130022 China
| | - Guimiao Lin
- Shenzhen Key Laboratory of Translational Medicine of Tumor and the Key Lab of Biomedical Engineering, School of Medicine; Shenzhen University; Shenzhen 518060 China
| | - Feng Yin
- School of Electrical and Electronic Engineering; Nanyang Technological University; Singapore 639798 Singapore
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering; The Hong Kong Polytechnic University; Hung Hom Kowloon Hong Kong, China
| | - Ken-Tye Yong
- School of Electrical and Electronic Engineering; Nanyang Technological University; Singapore 639798 Singapore
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Liu J, Hu R, Liu J, Zhang B, Wang Y, Liu X, Law WC, Liu L, Ye L, Yong KT. Cytotoxicity assessment of functionalized CdSe, CdTe and InP quantum dots in two human cancer cell models. Materials Science and Engineering: C 2015; 57:222-31. [DOI: 10.1016/j.msec.2015.07.044] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 06/09/2015] [Accepted: 07/23/2015] [Indexed: 01/09/2023]
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Du FP, Yang W, Zhang F, Tang CY, Liu SP, Yin L, Law WC. Enhancing the Heat Transfer Efficiency in Graphene-Epoxy Nanocomposites Using a Magnesium Oxide-Graphene Hybrid Structure. ACS Appl Mater Interfaces 2015; 7:14397-14403. [PMID: 26075677 DOI: 10.1021/acsami.5b03196] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Composite materials, such as organic matrices doped with inorganic fillers, can generate new properties that exhibit multiple functionalities. In this paper, an epoxy-based nanocomposite that has a high thermal conductivity and a low electrical conductivity, which are required for the use of a material as electronic packaging and insulation, was prepared. The performance of the epoxy was improved by incorporating a magnesium oxide-coated graphene (MgO@GR) nanomaterial into the epoxy matrix. We found that the addition of a MgO coating not only improved the dispersion of the graphene in the matrix and the interfacial bonding between the graphene and epoxy but also enhanced the thermal conductivity of the epoxy while preserving the electrical insulation. By adding 7 wt % MgO@GR, the thermal conductivity of the epoxy nanocomposites was enhanced by 76% compared with that of the neat epoxy, and the electrical resistivity was maintained at 8.66 × 10(14) Ω m.
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Affiliation(s)
- Fei-Peng Du
- †School of Materials Science and Engineering and Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, China
| | - Wen Yang
- †School of Materials Science and Engineering and Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, China
| | - Fang Zhang
- †School of Materials Science and Engineering and Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, China
| | - Chak-Yin Tang
- ‡Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
| | - Sheng-Peng Liu
- †School of Materials Science and Engineering and Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, China
| | - Le Yin
- †School of Materials Science and Engineering and Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, China
| | - Wing-Cheung Law
- ‡Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
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Yang C, Hu R, Anderson T, Wang Y, Lin G, Law WC, Lin WJ, Nguyen QT, Toh HT, Yoon HS, Chen CK, Yong KT. Biodegradable nanoparticle-mediated K-ras down regulation for pancreatic cancer gene therapy. J Mater Chem B 2015; 3:2163-2172. [DOI: 10.1039/c4tb01623h] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Biodegradable nanoparticle-mediated K-ras siRNA delivery has shown inhibition of cell proliferation, migration and invasion in pancreatic cancer cells.
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Zou J, Yu Y, Li Y, Ji W, Chen CK, Law WC, Prasad PN, Cheng C. Well-defined diblock brush polymer–drug conjugates for sustained delivery of paclitaxel. Biomater Sci 2015. [DOI: 10.1039/c4bm00458b] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis, characterization and property studies of paclitaxel (PTXL)-containing brush polymer–drug conjugates (BPDCs) are presented and the influence of grafting structures of BPDCs on their assembly behaviour, drug release profile and therapeutic effects is discussed in this article.
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Affiliation(s)
- Jiong Zou
- Department of Chemical and Biological Engineering
- University at Buffalo
- The State University of New York
- Buffalo
- USA
| | - Yun Yu
- Department of Chemical and Biological Engineering
- University at Buffalo
- The State University of New York
- Buffalo
- USA
| | - Yukun Li
- Department of Chemical and Biological Engineering
- University at Buffalo
- The State University of New York
- Buffalo
- USA
| | - Wei Ji
- Institute for Lasers
- Photonics and Biophotonics
- and Department of Chemistry
- University at Buffalo
- the State University of New York
| | - Chih-Kuang Chen
- Department of Chemical and Biological Engineering
- University at Buffalo
- The State University of New York
- Buffalo
- USA
| | - Wing-Cheung Law
- Institute for Lasers
- Photonics and Biophotonics
- and Department of Chemistry
- University at Buffalo
- the State University of New York
| | - Paras N. Prasad
- Institute for Lasers
- Photonics and Biophotonics
- and Department of Chemistry
- University at Buffalo
- the State University of New York
| | - Chong Cheng
- Department of Chemical and Biological Engineering
- University at Buffalo
- The State University of New York
- Buffalo
- USA
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Abstract
We report the synthesis, characterization andin vitroassessment of a degradable brush polymer–drug conjugate which can enable acid-triggered release of doxorubicin (DOX).
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Affiliation(s)
- Yun Yu
- Department of Chemical and Biological Engineering
- University at Buffalo
- The State University of New York
- Buffalo
- USA
| | - Chih-Kuang Chen
- Department of Chemical and Biological Engineering
- University at Buffalo
- The State University of New York
- Buffalo
- USA
| | - Wing-Cheung Law
- Institute for Lasers
- Photonics and Biophotonics
- and Department of Chemistry
- University at Buffalo
- The State University of New York
| | - Haotian Sun
- Department of Chemical and Biological Engineering
- University at Buffalo
- The State University of New York
- Buffalo
- USA
| | - Paras N. Prasad
- Institute for Lasers
- Photonics and Biophotonics
- and Department of Chemistry
- University at Buffalo
- The State University of New York
| | - Chong Cheng
- Department of Chemical and Biological Engineering
- University at Buffalo
- The State University of New York
- Buffalo
- USA
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Chen CK, Wang Q, Jones CH, Yu Y, Zhang H, Law WC, Lai CK, Zeng Q, Prasad PN, Pfeifer BA, Cheng C. Synthesis of pH-responsive chitosan nanocapsules for the controlled delivery of doxorubicin. Langmuir 2014; 30:4111-4119. [PMID: 24665861 DOI: 10.1021/la4040485] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Well-defined chitosan nanocapsules (CSNCs) with tunable sizes were synthesized through the interfacial cross-linking of N-maleoyl-functionalized chitosan (MCS) in miniemulsions, and their application in the delivery of doxorubicin (Dox) was investigated. MCS was prepared by the amidation reaction of CS with maleic anhydride in water/DMSO at 65 °C for 20 h. Subsequently, thiol-ene cross-linking was conducted in oil-in-water miniemulsions at room temperature under UV irradiation for 1 h, using MCS as both a surfactant and precursor polymer, 1,4-butanediol bis(3-mercapto-propionate) as a cross-linker, and D-α-tocopheryl poly(ethylene glycol) 1000 succinate as a cosurfactant. With the increase in cosurfactant concentration in the reaction systems, the sizes of the resulting CSNCs decreased steadily. Dox-loaded CSNCs were readily prepared by in situ encapsulation of Dox during miniemulsion cross-linking. With acid-labile β-thiopropionate cross-linkages, the Dox-loaded CSNCs demonstrated a faster release rate under acidic conditions. Relative to free Dox, Dox-loaded CSNCs exhibited enhanced cytotoxicity toward MCF-7 breast cancer cells without any noticeable cytotoxicity from empty CSNCs. The effective delivery of Dox to MCF-7 breast cancer cells via Dox-loaded CSNCs was also observed.
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Affiliation(s)
- Chih-Kuang Chen
- Department of Chemical and Biological Engineering and ‡Institute for Lasers, Photonics and Biophotonics, University at Buffalo, The State University of New York , Buffalo, New York 14260, United States
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Oh HS, He GS, Law WC, Baev A, Jee H, Liu X, Urbas A, Lee CW, Choi BL, Swihart MT, Prasad PN. Manipulating nanoscale interactions in a polymer nanocomposite for chiral control of linear and nonlinear optical functions. Adv Mater 2014; 26:1607-1611. [PMID: 24307148 DOI: 10.1002/adma.201304071] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 09/26/2013] [Indexed: 06/02/2023]
Abstract
The design, synthesis, and supramolecular organization of a nanocomposite in which nanoscale excitonic interactions between quantum dots and the chiral polymer dramatically enhance the optical activity is reported. This material is highly suitable for application in the emerging field of chiral photonics.
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Affiliation(s)
- Heong Sub Oh
- Institute for Lasers, Photonics and Biophotonics, The University at Buffalo, The State University of New York, Buffalo, New York, 14260
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Yu Y, Chen CK, Law WC, Weinheimer E, Sengupta S, Prasad PN, Cheng C. Polylactide-graft-doxorubicin nanoparticles with precisely controlled drug loading for pH-triggered drug delivery. Biomacromolecules 2014; 15:524-32. [PMID: 24446700 DOI: 10.1021/bm401471p] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Nanoparticles (NPs) with high drug loading and pH-responsivity were prepared by nanoprecipitation of a hydrophobic polymer-drug conjugate (PDC). The PDC, polylactide-graft-doxorubicin (PLA-g-DOX), was synthesized by azide-alkyne click reaction to transform acetylene-functionalized PLA into PLA-graft-aldehyde (PLA-g-ALD), followed by DOX conjugation to form acid-sensitive Schiff base linkage between drug moieties and polymer scaffold. The DOX loading amount in PLA-g-DOX PDC was determined to be 32 wt % by (1)H NMR and UV-vis spectroscopies. PLA-g-DOX PDC was further used to prepare NPs with precisely controlled drug loading by nanoprecipitation in the presence of a PEGylated surfactant. The effects of organic solvent, PLA-g-DOX PDC concentration and PLA-g-DOX/surfactant mass ratio on size and size distribution of NPs were systematically examined based on analysis by dynamic light scattering (DLS) and transmission electron microscopy (TEM). NPs prepared under the optimal conditions exhibited well-defined spherical morphology with volume-average hydrodynamic diameter (Dh) around 100 nm. Due to the Schiff base conjugation linkage in PLA-g-DOX PDC, acid-sensitive drug release behavior of the NPs was observed. In vitro studies against MCF-7 breast cancer cells showed that the NPs can be readily taken up and result in enhanced therapeutic efficiency as compared to DOX·HCl, indicating their promising potential applications as anticancer nanomedicines.
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Affiliation(s)
- Yun Yu
- Department of Chemical and Biological Engineering, §Institute for Lasers, Photonics and Biophotonics, and ∥Department of Chemistry, University at Buffalo, The State University of New York , Buffalo, New York 14260, United States
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Lin G, Yang C, Hu R, Chen CK, Law WC, Anderson T, Zhang B, Nguyen QT, Toh HT, Yoon HS, Cheng C, Yong KT. Interleukin-8 gene silencing on pancreatic cancer cells using biodegradable polymer nanoplexes. Biomater Sci 2014; 2:1007-1015. [DOI: 10.1039/c3bm60325c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Biodegradable polymer nanoplexes were used as siRNA carriers for interleukin-8 gene silencing to attenuate cell proliferation in pancreatic cancer cells.
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Affiliation(s)
- Guimiao Lin
- School of Electrical and Electronic Engineering
- Nanyang Technological University
- Singapore 639798, Singapore
- The Engineering Lab of Synthetic Biology and the Key Lab of Biomedical Engineering
- School of Medicine
| | - Chengbin Yang
- School of Electrical and Electronic Engineering
- Nanyang Technological University
- Singapore 639798, Singapore
| | - Rui Hu
- School of Electrical and Electronic Engineering
- Nanyang Technological University
- Singapore 639798, Singapore
| | - Chih-Kuang Chen
- Department of Chemical and Biological Engineering
- University at Buffalo
- The State University of New York
- Buffalo, USA
| | - Wing-Cheung Law
- Department of Industrial and Systems Engineering
- The Hong Kong Polytechnic University
- Kowloon, P.R. China
| | - Tommy Anderson
- School of Electrical and Electronic Engineering
- Nanyang Technological University
- Singapore 639798, Singapore
| | - Butian Zhang
- School of Electrical and Electronic Engineering
- Nanyang Technological University
- Singapore 639798, Singapore
| | - Quoc Toan Nguyen
- Division of Structural Biology & Biochemistry
- School of Biological Sciences
- Nanyang Technological University
- Singapore 639798, Singapore
| | - Hui Ting Toh
- Division of Structural Biology & Biochemistry
- School of Biological Sciences
- Nanyang Technological University
- Singapore 639798, Singapore
| | - Ho Sup Yoon
- Division of Structural Biology & Biochemistry
- School of Biological Sciences
- Nanyang Technological University
- Singapore 639798, Singapore
| | - Chong Cheng
- Department of Chemical and Biological Engineering
- University at Buffalo
- The State University of New York
- Buffalo, USA
| | - Ken-Tye Yong
- School of Electrical and Electronic Engineering
- Nanyang Technological University
- Singapore 639798, Singapore
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Chen CK, Law WC, Aalinkeel R, Yu Y, Nair B, Wu J, Mahajan S, Reynolds JL, Li Y, Lai CK, Tzanakakis ES, Schwartz SA, Prasad PN, Cheng C. Biodegradable cationic polymeric nanocapsules for overcoming multidrug resistance and enabling drug-gene co-delivery to cancer cells. Nanoscale 2014; 6:1567-72. [PMID: 24326457 PMCID: PMC4522154 DOI: 10.1039/c3nr04804g] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Having unique architectural features, cationic polymeric nanocapsules (NCs) with well-defined covalently stabilized biodegradable structures were generated as potentially universal and safe therapeutic nanocarriers. These NCs were synthesized from allyl-functionalized cationic polylactide (CPLA) by highly efficient UV-induced thiol-ene interfacial cross-linking in transparent miniemulsions. With tunable nanoscopic sizes, negligible cytotoxicity and remarkable degradability, they are able to encapsulate doxorubicin (Dox) with inner cavities and bind interleukin-8 (IL-8) small interfering RNA (siRNA) with cationic shells. The Dox-encapsulated NCs can effectively bypass the P-glycoprotein (Pgp)-mediated multidrug resistance of MCF7/ADR cancer cells, thereby resulting in increased intracellular drug concentration and reduced cell viability. In vitro studies also showed that the NCs loaded with Dox, IL-8 siRNA and both agents can be readily taken up by PC3 prostate cancer cells, resulting in a significant chemotherapeutic effect and/or IL-8 gene silencing.
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Affiliation(s)
- Chih-Kuang Chen
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Wing-Cheung Law
- Institute for Lasers, Photonics and Biophotonics, and Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Ravikumar Aalinkeel
- Department of Medicine, Division of Allergy, Immunology, and Rheumatology, University at Buffalo, The State University of New York, Buffalo General Hospital, Buffalo, NY 14203, USA
| | - Yun Yu
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Bindukumar Nair
- Department of Medicine, Division of Allergy, Immunology, and Rheumatology, University at Buffalo, The State University of New York, Buffalo General Hospital, Buffalo, NY 14203, USA
| | - Jincheng Wu
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Supriya Mahajan
- Department of Medicine, Division of Allergy, Immunology, and Rheumatology, University at Buffalo, The State University of New York, Buffalo General Hospital, Buffalo, NY 14203, USA
| | - Jessica L. Reynolds
- Department of Medicine, Division of Allergy, Immunology, and Rheumatology, University at Buffalo, The State University of New York, Buffalo General Hospital, Buffalo, NY 14203, USA
| | - Yukun Li
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Cheng Kee Lai
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Emmanuel S. Tzanakakis
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Stanley A. Schwartz
- Department of Medicine, Division of Allergy, Immunology, and Rheumatology, University at Buffalo, The State University of New York, Buffalo General Hospital, Buffalo, NY 14203, USA
| | - Paras N. Prasad
- Institute for Lasers, Photonics and Biophotonics, and Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
- Department of Chemistry, Korea University, Seoul, 136-701, Korea
| | - Chong Cheng
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
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Tang Z, Palafox-Hernandez JP, Law WC, Hughes ZE, Swihart MT, Prasad PN, Knecht MR, Walsh TR. Biomolecular recognition principles for bionanocombinatorics: an integrated approach to elucidate enthalpic and entropic factors. ACS Nano 2013; 7:9632-46. [PMID: 24124916 DOI: 10.1021/nn404427y] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Bionanocombinatorics is an emerging field that aims to use combinations of positionally encoded biomolecules and nanostructures to create materials and devices with unique properties or functions. The full potential of this new paradigm could be accessed by exploiting specific noncovalent interactions between diverse palettes of biomolecules and inorganic nanostructures. Advancement of this paradigm requires peptide sequences with desired binding characteristics that can be rationally designed, based upon fundamental, molecular-level understanding of biomolecule-inorganic nanoparticle interactions. Here, we introduce an integrated method for building this understanding using experimental measurements and advanced molecular simulation of the binding of peptide sequences to gold surfaces. From this integrated approach, the importance of entropically driven binding is quantitatively demonstrated, and the first design rules for creating both enthalpically and entropically driven nanomaterial-binding peptide sequences are developed. The approach presented here for gold is now being expanded in our laboratories to a range of inorganic nanomaterials and represents a key step toward establishing a bionanocombinatorics assembly paradigm based on noncovalent peptide-materials recognition.
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Affiliation(s)
- Zhenghua Tang
- Department of Chemistry, University of Miami , 1301 Memorial Drive, Coral Gables, Florida 33146 United States
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Ohulchanskyy TY, Kopwitthaya A, Jeon M, Guo M, Law WC, Furlani EP, Kim C, Prasad PN. Phospholipid micelle-based magneto-plasmonic nanoformulation for magnetic field-directed, imaging-guided photo-induced cancer therapy. Nanomedicine: Nanotechnology, Biology and Medicine 2013; 9:1192-202. [DOI: 10.1016/j.nano.2013.05.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 04/19/2013] [Accepted: 05/25/2013] [Indexed: 12/29/2022]
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Liu X, Lee C, Law WC, Zhu D, Liu M, Jeon M, Kim J, Prasad PN, Kim C, Swihart MT. Au-Cu(2-x)Se heterodimer nanoparticles with broad localized surface plasmon resonance as contrast agents for deep tissue imaging. Nano Lett 2013; 13:4333-9. [PMID: 23984758 DOI: 10.1021/nl402124h] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
We report a new type of heterogeneous nanoparticles (NPs) composed of a heavily doped semiconductor domain (Cu2-xSe) and a metal domain (Au), which exhibit a broad localized surface plasmon resonance (LSPR) across visible and near-infrared (NIR) wavelengths, arising from interactions between the two nanocrystal domains. We demonstrate both in vivo photoacoustic imaging and in vitro dark field imaging, using the broad LSPR in Cu2-xSe-Au hybrid NPs to achieve contrast at different wavelengths. The high photoacoustic imaging depth achieved, up to 17 mm, shows that these novel contrast agents could be clinically relevant. More broadly, this work demonstrates a new strategy for tuning LSPR absorbance by engineering the density of free charge carriers in two interacting domains.
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Affiliation(s)
- Xin Liu
- Department of Chemical and Biological Engineering, University at Buffalo (SUNY) , Buffalo, New York 14260, United States
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Lin G, Hu R, Law WC, Chen CK, Wang Y, Li Chin H, Nguyen QT, Lai CK, Yoon HS, Wang X, Xu G, Ye L, Cheng C, Yong KT. Biodegradable nanocapsules as siRNA carriers for mutant K-Ras gene silencing of human pancreatic carcinoma cells. Small 2013; 9:2757-63. [PMID: 23427041 DOI: 10.1002/smll.201201716] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [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: 07/18/2012] [Revised: 09/27/2012] [Indexed: 06/01/2023]
Abstract
The application of small interfering RNA (siRNA)-based RNA interference (RNAi) for cancer gene therapy has attracted great attention. Gene therapy is a promising strategy for cancer treatment because it is relatively non-invasive and has a higher therapeutic specificity than chemotherapy. However, without the use of safe and efficient carriers, siRNAs cannot effectively penetrate the cell membranes and RNAi is impeded. In this work, cationic poly(lactic acid) (CPLA)-based degradable nanocapsules (NCs) are utilized as novel carriers of siRNA for effective gene silencing of pancreatic cancer cells. These CPLA-NCs can readily form nanoplexes with K-Ras siRNA and over 90% transfection efficiency is achieved using the nanoplexes. Cell viability studies show that the nanoparticles are highly biocompatible and non-toxic, indicating that CPLA-NC is a promising potential candidate for gene therapy in a clinical setting.
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Affiliation(s)
- Guimiao Lin
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
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Liu X, Law WC, Jeon M, Wang X, Liu M, Kim C, Prasad PN, Swihart MT. Cu2-x Se nanocrystals with localized surface plasmon resonance as sensitive contrast agents for in vivo photoacoustic imaging: demonstration of sentinel lymph node mapping. Adv Healthc Mater 2013; 2:952-7. [PMID: 23300055 DOI: 10.1002/adhm.201200388] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Revised: 11/22/2012] [Indexed: 12/31/2022]
Affiliation(s)
- Xin Liu
- Department of Chemical and Biological Engineering, University at Buffalo, Buffalo, NY 14260, USA
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Yong KT, Law WC, Hu R, Ye L, Liu L, Swihart MT, Prasad PN. Nanotoxicity assessment of quantum dots: from cellular to primate studies. Chem Soc Rev 2013; 42:1236-50. [PMID: 23175134 DOI: 10.1039/c2cs35392j] [Citation(s) in RCA: 277] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Tremendous research efforts have been devoted to fabricating high quality quantum dots (QDs) for applications in biology and medicine. Much of this research was pursued with an ultimate goal of using QDs in clinical applications. However, a great deal of concern has been voiced about the potential hazards of QDs due to their heavy-metal content. Many studies have demonstrated toxicity of various QDs in cell culture studies. However, in a smaller number of studies using small animal models (mice and rats), no abnormal behaviour or tissue damage was noticed over periods of months after the systemic administration of QDs. Nevertheless, the correlation of these results with the potential for negative effects of QD on humans remains unclear. Many urgent questions must be answered before the QDs community moves into the clinical research phase. This review provides an overview of the toxicity assessment of QDs, ranging from cell culture studies to animal models and discusses their findings. Guidelines for using various nonhuman primate models for QD toxicity studies are highlighted. This review article is intended to promote the awareness of current developments of QD applications in biology, the potential toxicity of QDs, and approaches to minimizing toxicity.
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Affiliation(s)
- Ken-Tye Yong
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore.
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Mahajan S, Aalinkeel R, Reynolds J, Nair B, Sykes D, Law WC, Prasad P, Schwartz S. Innovative nanotherapy for the treatment of the chronic skin condition, rosacea. (P3259). The Journal of Immunology 2013. [DOI: 10.4049/jimmunol.190.supp.192.15] [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: 01/02/2023]
Abstract
Abstract
A chronic skin disorder called Rosacea is primarily characterized by inflammation associated with abnormal innate immune response and the current treatments include oral and topical antibiotics and antimicrobials. CD163 plays a key role in etiology of Rosacea and a combination targeted nanotherapy which includes an topical antibiotic such as doxycycline, an anti-microbial such as Azelaic acid and the anti CD163 antibody would be an effective therapy for Rosacea. We developed a nanoemulsion for the treatment of Rosacea using fluorophores called nanophosphors which are upconversion nanoparticles (UCNPs), that have the ability to convert near infrared radiations with lower energy into visible radiations with higher energy via a nonlinear optical process and exhibit unique luminescent properties, including high penetration depth into tissues. Our goal was to evaluate the transdermal delivery of this nanoemulsion using an in-vitro skin barrier model (EpiDerm™). Dermal permeability coefficient is calculated and drug concentrations are determined by HPLC. Our results show a significantly higher 72% increase (p<0.01) in uptake of this nanoemulsion by dermal keratinocytes and fibroblasts and deeper penetration into the skin layers as compared to topical application of the antibiotic and/or antimicrobial alone. Although, this nanoformulation is specific to the treatment of Rosacea, this nano-therapeutic approach can be applied to other skin disorders.
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Affiliation(s)
- Supriya Mahajan
- 1Medicine, State University of New York at Buffalo, Buffalo, NY
| | | | | | - Bindukumar Nair
- 1Medicine, State University of New York at Buffalo, Buffalo, NY
| | - Donald Sykes
- 1Medicine, State University of New York at Buffalo, Buffalo, NY
| | - Wing-Cheung Law
- 2Institute for Lasers, Photonics and Biophotonics, State University of New York at Buffalo, Buffalo, NY
| | - Paras Prasad
- 2Institute for Lasers, Photonics and Biophotonics, State University of New York at Buffalo, Buffalo, NY
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