1
|
Gholami A, Mousavi SM, Masoumzadeh R, Binazadeh M, Bagheri Lankarani K, Omidifar N, Arjmand O, Chiang WH, Moghadami M, Pynadathu Rumjit N. Advanced Theranostic Strategies for Viral Hepatitis Using Carbon Nanostructures. MICROMACHINES 2023; 14:1185. [PMID: 37374770 DOI: 10.3390/mi14061185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/27/2023] [Accepted: 05/29/2023] [Indexed: 06/29/2023]
Abstract
There are several treatment protocols for acute viral hepatitis, and it is critical to recognize acute hepatitis in its earliest stages. Public health measures to control these infections also rely on rapid and accurate diagnosis. The diagnosis of viral hepatitis remains expensive, and there is no adequate public health infrastructure, while the virus is not well-controlled. New methods for screening and detecting viral hepatitis through nanotechnology are being developed. Nanotechnology significantly reduces the cost of screening. In this review, the potential of three-dimensional-nanostructured carbon substances as promising materials due to fewer side effects, and the contribution of these particles to effective tissue transfer in the treatment and diagnosis of hepatitis due to the importance of rapid diagnosis for successful treatment, were extensively investigated. In recent years, three-dimensional carbon nanomaterials such as graphene oxide and nanotubes with special chemical, electrical, and optical properties have been used for the diagnosis and treatment of hepatitis due to their high potential. We expect that the future position of nanoparticles in the rapid diagnosis and treatment of viral hepatitis can be better determined.
Collapse
Affiliation(s)
- Ahmad Gholami
- Biotechnology Research Center, Shiraz University of Medical Science, Shiraz 71439-14693, Iran
- Pharmaceutical Sciences Research Center, Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Shiraz University of Medical Science, Shiraz 71439-14693, Iran
| | - Seyyed Mojtaba Mousavi
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Reza Masoumzadeh
- Department of Medical, Shiraz University of Medical Sciences, Shiraz 71439-14693, Iran
| | - Mojtaba Binazadeh
- Department of Chemical Engineering, School of Chemical and Petroleum Engineering, Shiraz 71557-13876, Iran
| | - Kamran Bagheri Lankarani
- Health Policy Research Center, Health Institute, Shiraz University of Medical Sciences, Shiraz 71439-14693, Iran
| | - Navid Omidifar
- Biotechnology Research Center, Shiraz University of Medical Science, Shiraz 71439-14693, Iran
- Department of Pathology, Shiraz University of Medical Sciences, Shiraz 71439-14693, Iran
| | - Omid Arjmand
- Department of Chemical Engineering, South Tehran Branch, Islamic Azad University, Tehran 14687-63785, Iran
| | - Wei-Hung Chiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Mohsen Moghadami
- Non-Communicable Diseases Research Center, Shiraz University of Medical Sciences, Shiraz 71439-14693, Iran
| | - Nelson Pynadathu Rumjit
- Nanotechnology and Catalysis Research Centre (NANOCAT), Level 3, Block A, Institute for Advanced Studies (IAS), University of Malaya (UM), Kuala Lumpur 50603, Malaysia
| |
Collapse
|
2
|
Saida Y, Shikata R, En-Ya K, Ohmura S, Nishina Y, Hada M. Development of a Multitimescale Time-Resolved Electron Diffraction Setup: Photoinduced Dynamics of Oxygen Radicals on Graphene Oxide. J Phys Chem A 2022; 126:6301-6308. [PMID: 36063425 DOI: 10.1021/acs.jpca.2c04075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We developed a multitimescale time-resolved electron diffraction setup by electrically synchronizing a nanosecond laser with our table-top picosecond time-resolved electron diffractometer. The setup covers the photoinduced structural dynamics of target materials at timescales ranging from picoseconds to submilliseconds. Using this setup, we sequentially observed the ultraviolet (UV) photoinduced bond dissociation, radical formation, and relaxation dynamics of the oxygen atoms in the epoxy functional group on the basal plane of graphene oxide (GO). The results show that oxygen radicals formed via UV photoexcitation on the basal plane of GO in several tens of picoseconds and then relaxed back to the initial state on the microsecond timescale. The results of first-principles calculations also support the formation of oxygen radicals in the excited state on an early timescale. These results are essential for the further discussion of the reactivities on the basal plane of GO, such as catalytic reactions and antibacterial and antiviral activities. The results also suggest that the multitimescale time-resolved electron diffraction system is a promising tool for laboratory-based molecular dynamics studies of materials and chemical systems.
Collapse
Affiliation(s)
- Yuri Saida
- Graduate School of Science and Technology, University of Tsukuba, Tsukuba 305-8573, Japan
| | - Ryo Shikata
- Graduate School of Science and Technology, University of Tsukuba, Tsukuba 305-8573, Japan
| | - Kaito En-Ya
- College of Engineering Sciences, University of Tsukuba, Tsukuba 305-8573, Japan
| | - Satoshi Ohmura
- Faculty of Engineering, Hiroshima Institute of Technology, Hiroshima 731-5193, Japan
| | - Yuta Nishina
- Research Core for Interdisciplinary Sciences, Okayama University, Okayama 700-8530, Japan
| | - Masaki Hada
- Graduate School of Science and Technology, University of Tsukuba, Tsukuba 305-8573, Japan.,Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, Tsukuba 305-8573, Japan
| |
Collapse
|
3
|
Singh A, Rai SK, Manisha M, Yadav SK. Immobilized L-ribose isomerase for the sustained synthesis of a rare sugar D-talose. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
4
|
Jain VP, Chaudhary S, Sharma D, Dabas N, Lalji RSK, Singh BK, Jaiswar G. Advanced functionalized nanographene oxide as a biomedical agent for drug delivery and anti-cancerous therapy: A review. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2020.110124] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|
5
|
Park SJ, Kim J, Kang S, Cha HJ, Shin H, Park J, Jang YS, Woo JS, Won C, Min DH. Discovery of direct-acting antiviral agents with a graphene-based fluorescent nanosensor. SCIENCE ADVANCES 2020; 6:eaaz8201. [PMID: 32523995 PMCID: PMC7259931 DOI: 10.1126/sciadv.aaz8201] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 03/31/2020] [Indexed: 05/04/2023]
Abstract
Direct-acting agents against viral components are considered as the most promising candidates for the successful antiviral therapeutics. To date, no direct-acting drugs exist for the treatment against dengue virus (DV) infection, which can develop into life-threatening diseases. RNA-dependent RNA polymerase (RdRp), an RNA virus-specific enzyme highly conserved among various viral families, has been known as the broad-range antiviral drug target. Here, we developed an RNA-based graphene biosensor system [RNA nano-graphene oxide system (RANGO)] to enable the fluorescence-based quantitative analysis of the RdRp enzyme activity. We used the RANGO system to a high-throughput chemical screening to identify novel direct-acting antiviral drug candidates targeting DV RdRp from the FDA-approved small-molecule library. RANGO accelerated the massive selection of drug candidates. We found that one of the selected hit compounds, montelukast, showed antiviral activity in vitro and in vivo by directly inhibiting replication of DV and thus relieved related symptoms.
Collapse
Affiliation(s)
- Se-Jin Park
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Jungho Kim
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
- Institute of Biotherapeutics Convergence Technology, Lemonex Inc., Seoul 08826, Republic of Korea
| | - Seounghun Kang
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyung Jin Cha
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
- Center for RNA Research, Institute for Basic Science (IBS), Seoul National University, Seoul 08826, Republic of Korea
| | - Hojeong Shin
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
| | - Jisang Park
- Department of Bioactive Material Sciences and Institute of Bioactive Materials, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Yong-Suk Jang
- Department of Bioactive Material Sciences and Institute of Bioactive Materials, Jeonbuk National University, Jeonju 54896, Republic of Korea
- Department of Molecular Biology and the Institute for Molecular Biology and Genetics, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Jae-Sung Woo
- Center for RNA Research, Institute for Basic Science (IBS), Seoul National University, Seoul 08826, Republic of Korea
- Department of Life Sciences, Korea University, Seoul 02841, Republic of Korea
| | - Cheolhee Won
- Institute of Biotherapeutics Convergence Technology, Lemonex Inc., Seoul 08826, Republic of Korea
| | - Dal-Hee Min
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
- Institute of Biotherapeutics Convergence Technology, Lemonex Inc., Seoul 08826, Republic of Korea
- Department of Biological Sciences, Seoul National University, Seoul 08826, Republic of Korea
| |
Collapse
|
6
|
Reddy S, He L, Ramakrishana S, Luo H. Graphene nanomaterials for regulating stem cell fate in neurogenesis and their biocompatibility. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2019. [DOI: 10.1016/j.cobme.2019.04.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
7
|
Morales-Narváez E, Merkoçi A. Graphene Oxide as an Optical Biosensing Platform: A Progress Report. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1805043. [PMID: 30549101 DOI: 10.1002/adma.201805043] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 10/22/2018] [Indexed: 05/27/2023]
Abstract
A few years ago, crucial graphene oxide (GO) features such as the carbon/oxygen ratio, number of layers, and lateral size were scarcely investigated and, thus, their impact on the overall optical biosensing performance was almost unknown. Nowadays valuable insights about these features are well documented in the literature, whereas others remain controversial. Moreover, most of the biosensing systems based on GO were amenable to operating as colloidal suspensions. Currently, the literature reports conceptually new approaches obviating the need of GO colloidal suspensions, enabling the integration of GO onto a solid phase and leading to their application in new biosensing devices. Furthermore, most GO-based biosensing devices exploit photoluminescent signals. However, further progress is also achieved in powerful label-free optical techniques exploiting GO in biosensing, particularly using optical fibers, surface plasmon resonance, and surface enhanced Raman scattering. Herein, a critical overview on these topics is offered, highlighting the key role of the physicochemical properties of GO. New challenges and opportunities in this exciting field are also highlighted.
Collapse
Affiliation(s)
- Eden Morales-Narváez
- Biophotonic Nanosensors Laboratory, Centro de Investigaciones en Óptica, A. C., Loma del Bosque 115, Lomas del Campestre, León, Guanajuato, 37150, México
| | - Arben Merkoçi
- Nanobioelectronics and Biosensors Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2) CSIC and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain
- ICREA-Institució Catalana de Recerca i Estudis Avançats, 08010, Barcelona, Spain
| |
Collapse
|
8
|
Abstract
DNA repair is now understood to play a key role in a variety of disease states, most notably cancer. Tools for studying DNA have typically relied on traditional biochemical methods which are often laborious and indirect. Efforts to study the biology and therapeutic relevance of DNA repair pathways can be limited by such methods. Recently, specific fluorescent probes have been developed to aid in the study of DNA repair. Fluorescent probes offer the advantage of being able to directly assay for DNA repair activity in a simple, mix-and-measure format. This review will summarize the distinct classes of probe designs and their potential utility in varied research and preclinical settings.
Collapse
Affiliation(s)
- David L. Wilson
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Eric T. Kool
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| |
Collapse
|
9
|
Rumlová M, Ruml T. In vitro methods for testing antiviral drugs. Biotechnol Adv 2018; 36:557-576. [PMID: 29292156 PMCID: PMC7127693 DOI: 10.1016/j.biotechadv.2017.12.016] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 12/22/2017] [Accepted: 12/27/2017] [Indexed: 12/24/2022]
Abstract
Despite successful vaccination programs and effective treatments for some viral infections, humans are still losing the battle with viruses. Persisting human pandemics, emerging and re-emerging viruses, and evolution of drug-resistant strains impose continuous search for new antiviral drugs. A combination of detailed information about the molecular organization of viruses and progress in molecular biology and computer technologies has enabled rational antivirals design. Initial step in establishing efficacy of new antivirals is based on simple methods assessing inhibition of the intended target. We provide here an overview of biochemical and cell-based assays evaluating the activity of inhibitors of clinically important viruses.
Collapse
Affiliation(s)
- Michaela Rumlová
- Department of Biotechnology, University of Chemistry and Technology, Prague 166 28, Czech Republic.
| | - Tomáš Ruml
- Department of Biochemistry and Microbiology, University of Chemistry and Technology, Prague 166 28, Czech Republic.
| |
Collapse
|
10
|
Functionalization of carbon nanomaterials for advanced polymer nanocomposites: A comparison study between CNT and graphene. Prog Polym Sci 2017. [DOI: 10.1016/j.progpolymsci.2016.12.010] [Citation(s) in RCA: 391] [Impact Index Per Article: 55.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
11
|
Hwang DW, Hong BH, Lee DS. Multifunctional graphene oxide for bioimaging: emphasis on biological research. EUROPEAN JOURNAL OF NANOMEDICINE 2017. [DOI: 10.1515/ejnm-2016-0036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
AbstractGraphene oxide (GO) nanomaterials offer a wide range of bioimaging applicability. Almost complete quenching ability of fluorescence by GO and natural interaction of GO with single stranded nucleic acid made GO a useful and intriguing multifunctional nanoplatform both as a biosensor for in vitro microplate diagnostics and as a drug delivery carrier for targeted delivery. GO’s large surface area and strong near infrared absorbance contribute to enhancement of a therapeutic effect with abundant loading of drugs for possible photothermal and photodynamic therapy. Bioimaging capability of GO made it a good theranostic tool, while enabling tracing in vivo pharmacokinetics during concurrent treatment. Fluorescence, either signal on or off, Raman and surface-enhanced Raman scattering (SERs), photoacoustic, and radionuclide imaging modalities can be used for theranostic purposes using GO nanomaterials. In this review, we highlight current applications of GO for bioimaging that are classified into in vitro microplate, in vitro cellular and in vivo bioimaging.
Collapse
|
12
|
Radio-graphene in Theranostic Perspectives. Nucl Med Mol Imaging 2016; 51:17-21. [PMID: 28250854 DOI: 10.1007/s13139-016-0410-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 01/22/2016] [Accepted: 03/03/2016] [Indexed: 12/16/2022] Open
Abstract
Owing to its unique physicochemical properties such as high surface area, notable biocompatibility, robust mechanical strength, high thermal conductivity, and ease of functionalization, 2D-layered graphene has received tremendous attention as a futuristic nanomaterial and its-associated research has been rapidly evolving in a variety of fields. With the remarkable advances of graphene especially in the biomedical realm, in vivo evaluation techniques to examine in vivo behavior of graphene are largely demanded under the hope of clinical translation. Many different types of drugs such as the antisense oligomer and chemotherapeutics require optimal delivery conveyor and graphene is now recognized as a suitable candidate due to its simple and high drug loading property. Termed as 'radio-graphene', radioisotope-labeled graphene approach was recently harnessed in the realm of biomedicine including cancer diagnosis and therapy, contributing to the acquisition of in vivo information for targeted drug delivery. In this review, we highlight current examples for bioapplication of radiolabeled graphene with brief perspectives on future strategies in its extensive bio- or clinical applications.
Collapse
|
13
|
Leung KH, He HZ, He B, Zhong HJ, Lin S, Wang YT, Ma DL, Leung CH. Label-free luminescence switch-on detection of hepatitis C virus NS3 helicase activity using a G-quadruplex-selective probe. Chem Sci 2015; 6:2166-2171. [PMID: 28808523 PMCID: PMC5539802 DOI: 10.1039/c4sc03319a] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Accepted: 11/16/2014] [Indexed: 12/16/2022] Open
Abstract
A series of luminescent Ir(iii) complexes were synthesised and evaluated for their ability to act as luminescent G-quadruplex-selective probes. The Ir(iii) complex 9, [Ir(phq)2(phen)]PF6 (where phq = 2-phenylquinoline; phen = 1,10-phenanthroline), exhibited high luminescence in the presence of G-quadruplex DNA compared to dsDNA and ssDNA, and was employed to construct a label-free G-quadruplex-based assay for hepatitis C virus NS3 helicase activity in aqueous solution. Moreover, the application of the assay for screening potential helicase inhibitors was demonstrated. To our knowledge, this is the first G-quadruplex-based assay for helicase activity.
Collapse
Affiliation(s)
- Ka-Ho Leung
- Department of Chemistry , Hong Kong Baptist University , Kowloon Tong , Hong Kong , China .
| | - Hong-Zhang He
- Department of Chemistry , Hong Kong Baptist University , Kowloon Tong , Hong Kong , China .
| | - Bingyong He
- Department of Chemistry , Hong Kong Baptist University , Kowloon Tong , Hong Kong , China .
| | - Hai-Jing Zhong
- State Key Laboratory of Quality Research in Chinese Medicine , Institute of Chinese Medical Sciences , University of Macau , Macao , China .
| | - Sheng Lin
- Department of Chemistry , Hong Kong Baptist University , Kowloon Tong , Hong Kong , China .
| | - Yi-Tao Wang
- State Key Laboratory of Quality Research in Chinese Medicine , Institute of Chinese Medical Sciences , University of Macau , Macao , China .
| | - Dik-Lung Ma
- Department of Chemistry , Hong Kong Baptist University , Kowloon Tong , Hong Kong , China .
| | - Chung-Hang Leung
- State Key Laboratory of Quality Research in Chinese Medicine , Institute of Chinese Medical Sciences , University of Macau , Macao , China .
| |
Collapse
|
14
|
Robertson NM, Hizir MS, Balcioglu M, Rana M, Yumak H, Ecevit O, Yigit MV. Monitoring the multitask mechanism of DNase I activity using graphene nanoassemblies. Bioconjug Chem 2015; 26:735-45. [PMID: 25734834 DOI: 10.1021/acs.bioconjchem.5b00067] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Here we have demonstrated that graphene serves as a remarkable platform for monitoring the multitask activity of an enzyme with fluorescence spectroscopy. Our studies showed that four different simultaneous enzymatic tasks of DNase I can be observed and measured in a high throughput fashion using graphene oxide and oligonucleotide nanoassemblies. We have used phosphorothioate modified oligonucleotides to pinpoint the individual and highly specific functions of DNase I with single stranded DNA, RNA, and DNA/DNA and DNA/RNA duplexes. DNase I resulted in fluorescence recovery in the nanoassemblies and enhanced the intensity tremendously in the presence of sequence specific DNA or RNA molecules with different degrees of amplification. Our study enabled us to discover the sources of this remarkable signal enhancement, which has been used for biomedical applications of graphene for sensitive detection of specific oncogenes. The significant difference in the signal amplification observed for the detection of DNA and RNA molecules is a result of the positive and/or reductive signal generating events with the enzyme. In the presence of DNA there are four possible ways that the fluorescence reading is influenced, with two of them resulting in a gain in signal while the other two result in a loss. Since the observed signal is a summation of all the events together, the absence of the two fluorescence reduction events with RNA gives a greater degree of fluorescence signal enhancement when compared to target DNA molecules. Overall, our study demonstrates that graphene has powerful features for determining the enzymatic functions of a protein and reveals some of the unknowns observed in the graphene and oligonucleotide assemblies with DNase I.
Collapse
Affiliation(s)
| | | | | | | | - Hasan Yumak
- §Department of Science, BMCC, City University of New York, 199 Chambers Street, New York, New York 10007, United States
| | - Ozgur Ecevit
- §Department of Science, BMCC, City University of New York, 199 Chambers Street, New York, New York 10007, United States
| | | |
Collapse
|
15
|
Kim T, Kahng YH, Lee T, Lee K, Kim DH. Graphene films show stable cell attachment and biocompatibility with electrogenic primary cardiac cells. Mol Cells 2013; 36:577-82. [PMID: 24292978 PMCID: PMC3887961 DOI: 10.1007/s10059-013-0277-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 10/31/2013] [Accepted: 11/04/2013] [Indexed: 11/28/2022] Open
Abstract
Graphene has attracted substantial attention due to its advantageous materialistic applicability. In the present study, we tested the biocompatibility of graphene films synthesized by chemical vapor deposition with electrogenic primary adult cardiac cells (cardiomyocytes) by measuring the cell properties such as cell attachment, survival, contractility and calcium transients. The results show that the graphene films showed stable cell attachment and excellent biocompatibility with the electrogenic cardiomyocytes, suggesting their useful applications for future cell biology studies.
Collapse
Affiliation(s)
- Taeyong Kim
- School of Life Sciences and Systems Biology Research Center
| | - Yung Ho Kahng
- Research Institute for Solar and Sustainable Energies (RISE), Gwangju Institute of Science and Technology (GIST), Gwangju 500-712,
Korea
| | - Takhee Lee
- Department of Physics and Astronomy, Seoul National University, Seoul 151-747,
Korea
| | - Kwanghee Lee
- Research Institute for Solar and Sustainable Energies (RISE), Gwangju Institute of Science and Technology (GIST), Gwangju 500-712,
Korea
| | - Do Han Kim
- School of Life Sciences and Systems Biology Research Center
| |
Collapse
|