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Ki J, Lee H, Lee TG, Lee SW, Wi JS, Na HK. Visualization Materials Using Silicon-Based Optical Nanodisks (ViSiON) for Enhanced NIR Imaging in Ophthalmology. Adv Healthc Mater 2024:e2303713. [PMID: 38216129 DOI: 10.1002/adhm.202303713] [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: 10/26/2023] [Revised: 12/18/2023] [Indexed: 01/14/2024]
Abstract
ViSiON (visualization materials composed of silicon-based optical nanodisks) is presented, which offers a unique optical combination of near-infrared (NIR) optical properties and biodegradability. Initially, numerical simulations are conducted to calculate the total extinction and scattering effects of ViSiON by the diameter-to-thickness ratio, predicting precise control over its scattering properties in the NIR region. A top-down patterning technique is employed to synthesize ViSiON with accurate diameter and thickness control. ViSiON with a 50 nm thickness exhibits scattering properties over 400 times higher than that of 30 nm, rendering it suitable as a contrast agent for optical coherence tomography (OCT), especially in ophthalmic applications. Furthermore, ViSiON possesses inherent biodegradability in media, with ≈95% degradation occurring after 48 h, and the degradation rate can be finely tuned based on the quantity of protein coating applied to the surface. Subsequently, the OCT imaging capability is validated even within vessels smaller than 300 µm, simulating retinal vasculature using a retinal phantom. Then, using an ex ovo chick embryo model, it is demonstrated that ViSiON enhances the strength of protein membranes by 6.17 times, thereby presenting the potential for ViSiON as an OCT imaging probe capable of diagnosing retinal diseases.
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Affiliation(s)
- Jisun Ki
- Center for Systems Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
- Safety Measurement Institute, Korea Research Institute of Standards and Science, Daejeon, 34113, Republic of Korea
| | - Hyunji Lee
- Safety Measurement Institute, Korea Research Institute of Standards and Science, Daejeon, 34113, Republic of Korea
- Department of Medical Physics, University of Science and Technology, Daejeon, 34113, Republic of Korea
| | - Tae Geol Lee
- Safety Measurement Institute, Korea Research Institute of Standards and Science, Daejeon, 34113, Republic of Korea
- Department of Applied Measurement Science, University of Science and Technology, Daejeon, 34113, Republic of Korea
| | - Sang-Won Lee
- Safety Measurement Institute, Korea Research Institute of Standards and Science, Daejeon, 34113, Republic of Korea
- Department of Medical Physics, University of Science and Technology, Daejeon, 34113, Republic of Korea
- Department of Applied Measurement Science, University of Science and Technology, Daejeon, 34113, Republic of Korea
| | - Jung-Sub Wi
- Department of Materials Science and Engineering, Hanbat National University, Daejeon, 34158, Republic of Korea
| | - Hee-Kyung Na
- Safety Measurement Institute, Korea Research Institute of Standards and Science, Daejeon, 34113, Republic of Korea
- Department of Applied Measurement Science, University of Science and Technology, Daejeon, 34113, Republic of Korea
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2
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Lee S, Kim E, Moon CE, Park C, Lim JW, Baek M, Shin MK, Ki J, Cho H, Ji YW, Haam S. Amplified fluorogenic immunoassay for early diagnosis and monitoring of Alzheimer's disease from tear fluid. Nat Commun 2023; 14:8153. [PMID: 38071202 PMCID: PMC10710446 DOI: 10.1038/s41467-023-43995-5] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 11/27/2023] [Indexed: 12/18/2023] Open
Abstract
Accurate diagnosis of Alzheimer's disease (AD) in its earliest stage can prevent the disease and delay the symptoms. Therefore, more sensitive, non-invasive, and simple screening tools are required for the early diagnosis and monitoring of AD. Here, we design a self-assembled nanoparticle-mediated amplified fluorogenic immunoassay (SNAFIA) consisting of magnetic and fluorophore-loaded polymeric nanoparticles. Using a discovery cohort of 21 subjects, proteomic analysis identifies adenylyl cyclase-associated protein 1 (CAP1) as a potential tear biomarker. The SNAFIA demonstrates a low detection limit (236 aM), good reliability (R2 = 0.991), and a wide analytical range (0.320-1000 fM) for CAP1 in tear fluid. Crucially, in the verification phase with 39 subjects, SNAFIA discriminates AD patients from healthy controls with 90% sensitivity and 100% specificity in under an hour. Utilizing tear fluid as a liquid biopsy, SNAFIA could potentially aid in long-term care planning, improve clinical trial efficiency, and accelerate therapeutic development for AD.
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Affiliation(s)
- Sojeong Lee
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Eunjung Kim
- Division of Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
- Department of Bioengineering & Nano-bioengineering, Research Center for Bio Materials and Process Development, Incheon National University, Incheon, 22012, Republic of Korea
| | - Chae-Eun Moon
- Department of Ophthalmology, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, 16995, Republic of Korea
| | - Chaewon Park
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Jong-Woo Lim
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Minseok Baek
- Department of Neurology, Wonju Severance Christian Hospital, Yonsei University Wonju College of Medicine, Wonju, 26426, Republic of Korea
| | - Moo-Kwang Shin
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Jisun Ki
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Hanna Cho
- Department of Neurology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, 06273, Republic of Korea.
| | - Yong Woo Ji
- Department of Ophthalmology, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, 16995, Republic of Korea.
| | - Seungjoo Haam
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 03722, Republic of Korea.
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Ki J, Kwon IH, Lee J, Lim J, Jang S, Son SU, Seo SB, Oh SY, Kang T, Jung J, Lee KG, Hwang J, Lim EK. A portable smartphone-based colorimetric sensor that utilizes dual amplification for the on-site detection of airborne bacteria. J Hazard Mater 2023; 460:132398. [PMID: 37639787 DOI: 10.1016/j.jhazmat.2023.132398] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 08/22/2023] [Accepted: 08/23/2023] [Indexed: 08/31/2023]
Abstract
Over the past few years, infections caused by airborne pathogens have spread worldwide, infecting several people and becoming an increasingly severe threat to public health. Therefore, there is an urgent need for developing airborne pathogen monitoring technology for use in confined environments to enable epidemic prevention. In this study, we designed a colorimetry-based bacterial detection platform that uses a clustered regularly interspaced short palindromic repeat-associated protein 12a system to amplify signals and a urease enzyme to induce color changes. Furthermore, we have developed a smartphone application that can distinguish colors under different illumination conditions based on the HSV model and detect three types of disease-causing bacteria. Even synthetic oligomers of a few picomoles of concentration and genomic DNA of airborne bacteria smaller than several nanograms can be detected with the naked eye and using color analysis systems. Furthermore, in the air capture model system, the bacterial sample generated approximately a 2-fold signal difference compared with that in the control group. This colorimetric detection method can be widely applied for public safety because it is easy to use and does not require complex equipment.
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Affiliation(s)
- Jisun Ki
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; Center for Systems Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Ik Hwan Kwon
- Safety Measurement Institute, Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea
| | - Jina Lee
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; Department of Nanobiotechnology, KRIBB School of Biotechnology, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Jaewoo Lim
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; Medical Device Development Center, Osong Medical innovation foundation, 123, Osongsaengmyeong-ro, Chungcheongbuk-do, 28160, Republic of Korea
| | - Soojin Jang
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; Department of Nanobiotechnology, KRIBB School of Biotechnology, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Seong Uk Son
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; Department of Nanobiotechnology, KRIBB School of Biotechnology, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Seung Beom Seo
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; Department of Cogno-Mechatronics Engineering, Pusan National University, 2 Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea
| | - Seo Yeong Oh
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Taejoon Kang
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Juyeon Jung
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Kyoung G Lee
- Division of Nano-Bio Sensors/Chips Development, National NanoFab Center (NNFC), Daejeon 34141, Republic of Korea
| | - Jungho Hwang
- Department of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Eun-Kyung Lim
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; Department of Nanobiotechnology, KRIBB School of Biotechnology, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34113, Republic of Korea; School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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Abstract
African swine fever virus (ASFV) causes a highly contagious and fatal disease affecting both domesticated and wild pigs. Substandard therapies and inadequate vaccinations cause severe economic damages from pig culling and removal of infected carcasses. Therefore, there is an urgent need to develop a rapid point-of-use approach that assists in avoiding the spread of ASFV and reducing economic loss. In this study, we developed a colorimetric sensing platform based on dual enzymatic amplification that combined the clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 12a (Cas12a) system and the enzyme urease for accurate and sensitive detection of ASFV. The mechanism of the sensing platform involves a magnetic bead-anchored urease-conjugated single-stranded oligodeoxynucleotide (MB@urODN), which in the presence of ASFV dsDNA is cleaved by activated CRISPR/Cas12a. After magnetically separating the free urease, the presence of virus can be confirmed by measuring the colorimetric change in the solution. The advantage of this method is that it can detect the presence of virus without undergoing a complex target gene duplication process. The established method detected ASFV from three clinical specimens collected from porcine clinical tissue samples. The proposed platform is designed to provide an adequate, simple, robust, highly sensitive and selective analytical technique for rapid zoonotic disease diagnosis while eliminating the need for vast or specialized tools.
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Affiliation(s)
- Jisun Ki
- Bionanotechnology
Research Center, Korea Research Institute
of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Hee-Kyung Na
- Center
for Nano-Bio Measurement, Korea Research
Institute of Standards and Science (KRISS), Daejeon 34113, Republic of Korea
| | - Sun Woo Yoon
- Department
of Biological Sciences and Biotechnology, Andong National University, Andong 36729, Republic of Korea
| | - Van Phan Le
- Department
of Microbiology and Infectious Disease, College of Veterinary Medicine, Vietnam National University of Agriculture, Hanoi 100000, Vietnam
| | - Tae Geol Lee
- Center
for Nano-Bio Measurement, Korea Research
Institute of Standards and Science (KRISS), Daejeon 34113, Republic of Korea,Department
of Nano Science, University of Science and
Technology (UST), Daejeon 34113, Republic of Korea,
| | - Eun-Kyung Lim
- Bionanotechnology
Research Center, Korea Research Institute
of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea,Department
of Nanobiotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), Daejeon 34113, Republic of Korea,School
of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea,. Phone: +82-42-879-8456
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Kim J, Park J, Ki J, Rho HW, Huh YM, Kim E, Son HY, Haam S. Simultaneous dual-targeted monitoring of breast cancer circulating miRNA via surface-enhanced Raman spectroscopy. Biosens Bioelectron 2022; 207:114143. [DOI: 10.1016/j.bios.2022.114143] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 02/21/2022] [Accepted: 02/28/2022] [Indexed: 01/20/2023]
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Na HK, Ki J, Le MU, Kim KS, Lee CH, Lee TG, Wi JS. Analyte-Induced Desert Rose-like Ag Nanostructures for Surface-Enhanced Raman Scattering-Based Biomolecule Detection and Imaging. ACS Appl Mater Interfaces 2021; 13:58393-58400. [PMID: 34846139 DOI: 10.1021/acsami.1c18815] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Biomolecule detection based on surface-enhanced Raman scattering (SERS) for application to biosensors and bio-imaging requires the fabrication of SERS nanoprobes that can generate strong Raman signals as well as surface modifications for analyte-specific recognition and binding. Such requirements lead to disadvantages in terms of reproducibility and practicality, and thus, it has been difficult to apply biomolecule detection utilizing the advantages of the SERS phenomenon to actual clinically relevant analysis. To achieve reproducible and practical SERS signal generation in a biomolecule-specific manner without requiring the synthesis of nanostructures and their related surface modification to introduce molecules for specific recognition, we developed a new type of SERS probe formed by enzyme reactions in the presence of Raman reporters. By forming unique plasmonic structures, our method achieves the detection of biomolecules on chips with uniform and stable signals over long periods. To test the proposed approach, we applied it to a SERS-based immunohistochemistry assay and found successful multiplexed protein detection in brain tissue from transgenic mice.
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Affiliation(s)
- Hee-Kyung Na
- Center for Nano-Bio Measurement, Korea Research Institute of Standards and Science (KRISS), Daejeon 34113, Korea
| | - Jisun Ki
- Center for Nano-Bio Measurement, Korea Research Institute of Standards and Science (KRISS), Daejeon 34113, Korea
| | - Minh-Uyen Le
- Center for Nano-Bio Measurement, Korea Research Institute of Standards and Science (KRISS), Daejeon 34113, Korea
- Department of Nano Science, University of Science and Technology (UST), Daejeon 34113, Korea
| | - Kyoung-Shim Kim
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Korea
| | - Chul-Ho Lee
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Korea
| | - Tae Geol Lee
- Center for Nano-Bio Measurement, Korea Research Institute of Standards and Science (KRISS), Daejeon 34113, Korea
- Department of Nano Science, University of Science and Technology (UST), Daejeon 34113, Korea
| | - Jung-Sub Wi
- Department of Materials Science and Engineering, Hanbat National University, Daejeon 34158, Korea
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Shin MK, Ji YW, Moon CE, Lee H, Kang B, Jinn WS, Ki J, Mun B, Kim MH, Lee HK, Haam S. Matrix metalloproteinase 9-activatable peptide-conjugated hydrogel-based fluorogenic intraocular-lens sensor. Biosens Bioelectron 2020; 162:112254. [DOI: 10.1016/j.bios.2020.112254] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 04/04/2020] [Accepted: 04/26/2020] [Indexed: 12/16/2022]
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Lim JW, Na W, Kim HO, Yeom M, Kang A, Park G, Park C, Ki J, Lee S, Jung B, Jeong HH, Park D, Song D, Haam S. Co-delivery of antigens and immunostimulants via a polymersome for improvement of antigen-specific immune response. J Mater Chem B 2020; 8:5620-5626. [DOI: 10.1039/d0tb00892c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Bilayer spherical polymersome based adjuvants promote the antigen cellular uptake into antigen-presenting cells. The administration of polymersome loading OVA and MPLA induce the secretion of cytokines by macrophage activation and elicit potent antigen-specific antibody responses.
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Ki J, Lee HY, Son HY, Huh YM, Haam S. Sensitive Plasmonic Detection of miR-10b in Biological Samples Using Enzyme-Assisted Target Recycling and Developed LSPR Probe. ACS Appl Mater Interfaces 2019; 11:18923-18929. [PMID: 31066266 DOI: 10.1021/acsami.9b03005] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A portable and nonlabeled plasmonic biosensor was advanced to enable the sensitive and selective detection of microRNA (miRNA) in a biological sample. miRNAs can act on several key cellular processes, including cell differentiation, cell cycle progression, and function as oncogenes. Detection of circulating miRNAs, especially in blood or urine samples, allows noninvasive and simple diagnosis of diseases. Herein, we report a localized surface plasmon resonance sensor (LSPR) based on an enzyme-assisted target recycling system and a developed LSPR probe for the detection of gastric cancer relevant miRNAs, miR-10b. The sensitivity of the sensor was improved by increasing the concentration of the signal-amplifying agent using the duplex-specific nuclease and by strongly binding the developed LSPR probe, tannic acid capping gold nanoparticles, to the DNA. Under optimal conditions, miR-10b detection could be realized in the range of 5 pM-10 nM with a detection limit of 2.45 pM. This integrated detection system represents an approach to sensitive detection of miRNAs and offers great applications in personalized medicine and monitoring of cancer.
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Affiliation(s)
- Jisun Ki
- Department of Chemical and Biomolecular Engineering , Yonsei University , Yonsei-ro 50 , Seoul 120-749 , South Korea
| | - Hyo Young Lee
- Department of Chemical and Biomolecular Engineering , Yonsei University , Yonsei-ro 50 , Seoul 120-749 , South Korea
| | - Hye Young Son
- Department of Radiology, College of Medicine , Yonsei University , Seoul 120-752 , South Korea
| | - Yong-Min Huh
- Department of Radiology, College of Medicine , Yonsei University , Seoul 120-752 , South Korea
| | - Seungjoo Haam
- Department of Chemical and Biomolecular Engineering , Yonsei University , Yonsei-ro 50 , Seoul 120-749 , South Korea
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Han S, Kang B, Jang E, Ki J, Kim E, Jeong MY, Huh YM, Son HY, Haam S. Convenient Monitoring System of Intracellular microRNA Expression during Adipogenesis via Mechanical Stimulus-Induced Exocytosis of Lipovesicular miRNA Beacon. Adv Healthc Mater 2018; 7. [PMID: 29280320 DOI: 10.1002/adhm.201701019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Revised: 11/11/2017] [Indexed: 01/01/2023]
Abstract
Noninvasive investigation of microRNAs (miRNAs) expression, which is deeply related to biological phenomena such as stem cell differentiation, in culture soup is particularly useful for monitoring of stem cell differentiation without phototoxicity of living cells, especially when cell morphologies remain unchanged during differentiation. However, real-time detection of miRNA in culture soup is not recommended because of insufficient miRNA amounts in culture soup. In this study, a convenient method is introduced for real-time assessing intracellular miRNA in culture soup by using lipovesicular miRNA beacon (Lipo-mB) and mechanical stimulus-mediated exocytosis. Pipetting-harvest of culture soup induces exocytosis-secretion of fluorescence signal of Lipo-mB from cytoplasm into culture soup. To demonstrate this method, Lipo-mB is applied for monitoring of adipogenesis by analyzing the expression levels of various intracellular miRNAs, which are related to adipogenesis regulators. The fluorescence intensity profile of the culture soup is correlated with the quantitative reverse-transcription-polymerase chain reaction data and absorbance of Oil Red O staining. These results demonstrate that Lipo-mB can successfully monitor stem cell differentiation by sensing changes in miRNA expression from culture soup of living cells. Lipo-mB can be further developed as an accurate sensing system for analyzing subtle differences in genotype, even when changes in phenotype cannot be observed.
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Affiliation(s)
- Seungmin Han
- Department of Chemical and Biomolecular Engineering; Yonsei University; Seoul 120-749 Republic of Korea
| | - Byunghoon Kang
- Department of Chemical and Biomolecular Engineering; Yonsei University; Seoul 120-749 Republic of Korea
| | - Eunji Jang
- Department of Radiology; College of Medicine; Yonsei University; Seoul 120-752 Republic of Korea
| | - Jisun Ki
- Department of Chemical and Biomolecular Engineering; Yonsei University; Seoul 120-749 Republic of Korea
| | - Eunjung Kim
- Department of Materials; Department of Bioengineering and Institute for Biomedical Engineering; Imperial College London; London SW7 2AZ UK
| | - Mun-Young Jeong
- Department of Radiology; College of Medicine; Yonsei University; Seoul 120-752 Republic of Korea
| | - Yong-Min Huh
- Department of Radiology; College of Medicine; Yonsei University; Seoul 120-752 Republic of Korea
- Severance Biomedical Science Institute; College of Medicine; Yonsei University; Seoul 120-752 Republic of Korea
- YUHS-KRIBB Medical Convergence Research Institute; Seoul 120-752 Republic of Korea
- Brain Korea 21 Project for Medical Science; Yonsei University College of Medicine; Seoul 120-752 Republic of Korea
| | - Hye-Young Son
- Department of Radiology; College of Medicine; Yonsei University; Seoul 120-752 Republic of Korea
- Severance Biomedical Science Institute; College of Medicine; Yonsei University; Seoul 120-752 Republic of Korea
- YUHS-KRIBB Medical Convergence Research Institute; Seoul 120-752 Republic of Korea
| | - Seungjoo Haam
- Department of Chemical and Biomolecular Engineering; Yonsei University; Seoul 120-749 Republic of Korea
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Ki J, Jang E, Han S, Shin MK, Kang B, Huh YM, Haam S. Instantaneous pH-Boosted Functionalization of Stellate Gold Nanoparticles for Intracellular Imaging of miRNA. ACS Appl Mater Interfaces 2017; 9:17702-17709. [PMID: 28524648 DOI: 10.1021/acsami.6b16452] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Various types of nanoprobes have recently been utilized to monitor living organisms by detecting and imaging intracellular biomarkers, such as microRNAs (miRs). We here present a simple one-pot method to prepare stellate gold nanoparticles functionalized with miR-detecting molecular beacons (SGNP-MBs); low pH conditions permitted the rapid-high loading of MBs on the surface of SGNPs. Compared to the conventional gold nanoparticle-based MBs, SGNPs carried a 4.5-fold higher load of MBs and exhibited a 6.4-fold higher cellular uptake. We demonstrated that SGNP-MBs were successfully internalized in human gastric cancer cell lines and could be used to accurately detect and image intracellular miRs in an miR-specific manner. Furthermore, the relative levels of intracellular miRs in three different cell lines expressing miR-10b (high, moderate, and low levels) could be monitored using SGNP-MBs. Consequently, these results indicated that SGNP-MBs could have applications as highly potent, efficient nanoprobes to assess intracellular miR levels in living cells.
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Affiliation(s)
- Jisun Ki
- Department of Chemical and Biomolecular Engineering, Yonsei University , Yonsei-ro 50, Seoul 120-749, South Korea
| | - Eunji Jang
- Department of Chemical and Biomolecular Engineering, Yonsei University , Yonsei-ro 50, Seoul 120-749, South Korea
| | - Seungmin Han
- Department of Chemical and Biomolecular Engineering, Yonsei University , Yonsei-ro 50, Seoul 120-749, South Korea
| | - Moo-Kwang Shin
- Department of Chemical and Biomolecular Engineering, Yonsei University , Yonsei-ro 50, Seoul 120-749, South Korea
| | - Byunghoon Kang
- Department of Chemical and Biomolecular Engineering, Yonsei University , Yonsei-ro 50, Seoul 120-749, South Korea
| | - Yong-Min Huh
- Department of Radiology, College of Medicine, Yonsei University , Seoul 120-752, South Korea
| | - Seungjoo Haam
- Department of Chemical and Biomolecular Engineering, Yonsei University , Yonsei-ro 50, Seoul 120-749, South Korea
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Shin MK, Kang B, Yoon NK, Kim MH, Ki J, Han S, Ahn JO, Haam S. Synthesis of Fe 3O 4@nickel-silicate core-shell nanoparticles for His-tagged enzyme immobilizing agents. Nanotechnology 2016; 27:495705. [PMID: 27831938 DOI: 10.1088/0957-4484/27/49/495705] [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: 06/06/2023]
Abstract
Immobilizing enzymes on artificially fabricated carriers for their efficient use and easy removal from reactants has attracted enormous interest for decades. Specifically, binding platforms using inorganic nanoparticles have been widely explored because of the benefits of their large surface area, easy surface modification, and high stability in various pH and temperatures. Herein, we fabricated Fe3O4 encapsulated 'sea-urchin' shaped nickel-silicate nanoparticles with a facile synthetic route. The enzymes were then rapidly and easily immobilized with poly-histidine tags (His-tags) and nickel ion affinity. Porous nickel silicate covered nanoparticles achieved a high immobilization capacity (85 μg mg-1) of His-tagged tobacco etch virus (TEV) protease. To investigate immobilized TEV protease enzymatic activity, we analyzed the cleaved quantity of maltose binding protein-exendin-fused immunoglobulin fusion protein, which connected with the TEV protease-specific cleavage peptide sequence. Moreover, TEV protease immobilized nanocomplexes conveniently removed and recollected from the reactant by applying an external magnetic field, maintained their enzymatic activity after reuse. Therefore, our newly developed nanoplatform for His-tagged enzyme immobilization provides advantageous features for biotechnological industries including recombinant protein processing.
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Affiliation(s)
- Moo-Kwang Shin
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 120-749, Korea
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