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Kwon TS, Lee DS, Choi WI, Kim ES, Park YS. Selection of climate variables in ant species distribution models: case study in South Korea. Int J Biometeorol 2024; 68:263-277. [PMID: 38047942 DOI: 10.1007/s00484-023-02588-z] [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] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 01/02/2023] [Accepted: 11/16/2023] [Indexed: 12/05/2023]
Abstract
The selection of explanatory variables is important in modeling prediction of changes in species distribution in response to climate change. In this study, we evaluated the importance of variable selection in species distribution models. We compared two different types of models for predicting the distribution of ant species: temperature-only and both temperature and precipitation. Ants were collected at 343 forest sites across South Korea from 2006 through 2009. We used a generalized additive model (GAM) to predict the future distribution of 16 species that showed significant responses to changes in climatic factors (temperature and/or precipitation). Four types of GAMs were constructed: temperature, temperature with interaction of precipitation, temperature and precipitation without interaction, and temperature and precipitation with interaction. Most species displayed similar results between the temperatureonly and the temperature and precipitation models. The results for predicted changes in species richness were different from the temperature-only model. This indicates higher uncertainty in the prediction of species richness, which is obtained by combining the prediction results of distribution change for each species, than in the prediction of distribution change. The turnover rate of the ant assemblages was predicted to increase with decreases in temperature and increases in elevation, which was consistent with other studies. Finally, our results showed that the prediction of the distribution or diversity of organisms responding to climate change is uncertain because of the high variability of the model outputs induced by the variables used in the models.
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Affiliation(s)
- Tae-Sung Kwon
- Alpha Insect Diversity Lab, Nowon, Seoul, 01746, Republic of Korea
| | - Dae-Seong Lee
- Department of Biology, College of Sciences, Kyung Hee University, Dongdaemun, Seoul, 02447, Republic of Korea
| | - Won Il Choi
- Division of Forest Ecology, National Institute of Forest Science, Dongdaemun, Seoul, 02445, Republic of Korea
| | - Eun-Sook Kim
- Division of Forest Ecology, National Institute of Forest Science, Dongdaemun, Seoul, 02445, Republic of Korea
| | - Young-Seuk Park
- Department of Biology, College of Sciences, Kyung Hee University, Dongdaemun, Seoul, 02447, Republic of Korea.
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Jung JB, Kim ES, Lim JH, Choi WI. Host-specific growth responses of Larix kaempferi and Quercus acutissima to Asian gypsy moth defoliation in central Korea. Sci Rep 2024; 14:1477. [PMID: 38233543 PMCID: PMC10794211 DOI: 10.1038/s41598-024-51907-w] [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: 11/20/2023] [Accepted: 01/11/2024] [Indexed: 01/19/2024] Open
Abstract
As the risk of gypsy moth outbreaks that have detrimental effects on forest ecosystem in the Northern Hemisphere increase due to climate change, a quantitative evaluation of the impact of gypsy moth defoliation is needed to support the adaptive forest management. To evaluate the host-specific impact of gypsy moth defoliation, radial growth and annual carbon accumulation were compared for one severely defoliated (Larix kaempferi (Lamb.) Carrière) and one moderate defoliated (Quercus acutissima Carruth.) host, in defoliated and non-defoliated site using tree-ring analysis. Finally, the resilience indices of radial growth variables were calculated to assess the ability of sampled trees to withstand defoliation. Gypsy moth defoliation mainly decreased latewood width and caused reduction in annual carbon absorption more than 40% for both tree species. However, L. kaempferi, showed the reduced growth until the year following defoliation, while Q. acutissima, showed no lagged growth depression and rapid growth recover. The findings show how each species reacts differently to gypsy moth defoliation and highlight the need of managing forests in a way that takes resilient tree species into account.
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Affiliation(s)
- Jong Bin Jung
- Forest Ecology Division, National Institute of Forest Science, 57 Hoegi-Ro, Dongdaemun-Gu, Seoul, 02455, Republic of Korea
| | - Eun-Sook Kim
- Forest Ecology Division, National Institute of Forest Science, 57 Hoegi-Ro, Dongdaemun-Gu, Seoul, 02455, Republic of Korea
| | - Jong-Hwan Lim
- Forest Ecology Division, National Institute of Forest Science, 57 Hoegi-Ro, Dongdaemun-Gu, Seoul, 02455, Republic of Korea
| | - Won Il Choi
- Forest Ecology Division, National Institute of Forest Science, 57 Hoegi-Ro, Dongdaemun-Gu, Seoul, 02455, Republic of Korea.
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Oh H, Lee JS, Kim S, Lee JH, Shin YC, Choi WI. Super-Antioxidant Vitamin A Derivatives with Improved Stability and Efficacy Using Skin-Permeable Chitosan Nanocapsules. Antioxidants (Basel) 2023; 12:1913. [PMID: 38001766 PMCID: PMC10669859 DOI: 10.3390/antiox12111913] [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: 09/15/2023] [Revised: 10/24/2023] [Accepted: 10/24/2023] [Indexed: 11/26/2023] Open
Abstract
Retinyl palmitate (RP) is a retinol ester with strong antioxidant and anti-inflammatory properties as an antiwrinkle agent. However, it has poor aqueous solubility and easily degrades into inactive forms for topical applications. Therefore, we developed chitosan-coated nanocapsules (ChiNCs) to encapsulate RP using a simple nanoprecipitation method for protection against physiological conditions and to enable deep skin penetration. The as-prepared RP-loaded nanocapsules (RP@ChiNCs) loaded with approximately 5 wt.% RP exhibited a hydrodynamic diameter of 86 nm and surface charge of 24 mV. They had adequate stability to maintain their physicochemical properties after lyophilization in a biological buffer. Notably, ChiNCs provided RP with remarkable protection against degradation for 4 weeks at 37 °C. Thus, RP@ChiNCs exhibited good antioxidant activity in situ for sufficiently long periods without considerable changes in their efficacy. Furthermore, ChiNCs enhanced the skin penetration of lipophilic RP based on the inherent nature of chitosan. RP@ChiNCs exhibited good in vitro antioxidant and anti-inflammatory effects without causing any cytotoxicity in dermal fibroblasts. Accordingly, they promoted cell proliferation in a wound-scratch test and enhanced collagen synthesis. These results suggest that RP@ChiNCs are promising candidates for cosmetic and biomedical applications.
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Affiliation(s)
- Hyeryeon Oh
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Cheongju 28160, Republic of Korea; (H.O.); (J.S.L.); (S.K.)
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123, Cheomdan-gwagiro, Gwangju 61005, Republic of Korea
| | - Jin Sil Lee
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Cheongju 28160, Republic of Korea; (H.O.); (J.S.L.); (S.K.)
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123, Cheomdan-gwagiro, Gwangju 61005, Republic of Korea
| | - Sunghyun Kim
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Cheongju 28160, Republic of Korea; (H.O.); (J.S.L.); (S.K.)
| | - Jeung-Hoon Lee
- SKINMED Co., Ltd., Daejeon 34028, Republic of Korea; (J.-H.L.); (Y.C.S.)
| | - Yong Chul Shin
- SKINMED Co., Ltd., Daejeon 34028, Republic of Korea; (J.-H.L.); (Y.C.S.)
- Amicogen Inc., 64 Dongburo, 1259, Jinju 52621, Republic of Korea
| | - Won Il Choi
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Cheongju 28160, Republic of Korea; (H.O.); (J.S.L.); (S.K.)
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Choi S, Choi WI, Lee JS, Lee CH, Balamurugan M, Schwarz AD, Choi ZS, Randriamahazaka H, Nam KT. A Reflection on Sustainable Anode Materials for Electrochemical Chloride Oxidation. Adv Mater 2023; 35:e2300429. [PMID: 36897816 DOI: 10.1002/adma.202300429] [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] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 02/28/2023] [Indexed: 06/18/2023]
Abstract
Chloride oxidation is a key industrial electrochemical process in chlorine-based chemical production and water treatment. Over the past few decades, dimensionally stable anodes (DSAs) consisting of RuO2 - and IrO2 -based mixed-metal oxides have been successfully commercialized in the electrochemical chloride oxidation industry. For a sustainable supply of anode materials, considerable efforts both from the scientific and industrial aspects for developing earth-abundant-metal-based electrocatalysts have been made. This review first describes the history of commercial DSA fabrication and strategies to improve their efficiency and stability. Important features related to the electrocatalytic performance for chloride oxidation and reaction mechanism are then summarized. From the perspective of sustainability, recent progress in the design and fabrication of noble-metal-free anode materials, as well as methods for evaluating the industrialization of novel electrocatalysts, are highlighted. Finally, future directions for developing highly efficient and stable electrocatalysts for industrial chloride oxidation are proposed.
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Affiliation(s)
- Seungwoo Choi
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, South Korea
- Soft Foundry, Seoul National University, Seoul, 08826, South Korea
| | - Won Il Choi
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, South Korea
| | - Jun-Seo Lee
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, South Korea
| | - Chang Hyun Lee
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, South Korea
| | - Mani Balamurugan
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, South Korea
| | - Andrew D Schwarz
- Milton Hill Business and Technology Centre, Infineum, Abingdon, OX13 6BB, UK
| | - Zung Sun Choi
- Infineum Singapore LLP, Singapore, 098632, Singapore
| | | | - Ki Tae Nam
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, South Korea
- Soft Foundry, Seoul National University, Seoul, 08826, South Korea
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Oh H, Jeong E, Lee JS, Kim J, Lee D, Kim BS, Sung D, Koo H, Choi WI, Tae G. ROS-responsive PEGylated ferrocene polymer nanoparticles with improved stability for tumor-selective chemotherapy and imaging. Mater Today Bio 2023; 22:100774. [PMID: 37664795 PMCID: PMC10468360 DOI: 10.1016/j.mtbio.2023.100774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 07/27/2023] [Accepted: 08/15/2023] [Indexed: 09/05/2023] Open
Abstract
Ferrocene-based nanoparticles have garnered interest as reactive oxygen species (ROS)-responsive nanocarriers of anticancer drugs and imaging agents. However, their biomedical applications remain limited due to their poor physiological stability. PEGylation of nanocarriers improves their stability and biocompatibility. In this study, we aimed to develop novel PEG-ferrocene nanoparticles (PFNPs) with enhanced stability and ROS responsiveness for the delivery of paclitaxel (PTX) and imaging agents. PEGylation improved the stability of ferrocene nanoparticles, inhibiting their ROS-responsive destruction. Several PEG-ferrocene polymers containing different molar ratios of methacrylic acid and poly (ethylene glycol) methyl ether methacrylate was designed for optimization. ROS-responsive polymers with optimal monomer ratios were self-assembled into PFNPs with enhanced stability. The PFNPs distended, effectively releasing encapsulated PTX and imaging agents within 8 h in the presence of ROS. Furthermore, they remained stable, with no changes in their hydrodynamic diameters or polydispersity indexes after storage in an aqueous solution and biological buffer. The accumulation of PFNPs in a tumor model in vivo was 15-fold higher than a free dye. PTX-loaded PFNPs showed a substantial tumor-suppression effect, reducing tumor size to approximately 18% of that in the corresponding control group. These findings suggest a promising application of ROS-responsive PFNPs in tumor treatment as biocompatible nanocarriers of anticancer drugs and imaging agents.
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Affiliation(s)
- Hyeryeon Oh
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, Cheongju, 28160, Republic of Korea
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Eunjin Jeong
- Department of Medical Life Sciences, Department of Biomedicine & Health Sciences, and Catholic Photomedicine Research Institute, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Jin Sil Lee
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, Cheongju, 28160, Republic of Korea
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Jisu Kim
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, Cheongju, 28160, Republic of Korea
| | - Donghyun Lee
- Department of Medical Life Sciences, Department of Biomedicine & Health Sciences, and Catholic Photomedicine Research Institute, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Byoung Soo Kim
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, Cheongju, 28160, Republic of Korea
| | - Daekyung Sung
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, Cheongju, 28160, Republic of Korea
| | - Heebeom Koo
- Department of Medical Life Sciences, Department of Biomedicine & Health Sciences, and Catholic Photomedicine Research Institute, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Won Il Choi
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, Cheongju, 28160, Republic of Korea
| | - Giyoong Tae
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
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Choi WI, Choi S, Balamurugan M, Park S, Cho KH, Seo H, Ha H, Nam KT. Ru-Doped Co 3O 4 Nanoparticles as Efficient and Stable Electrocatalysts for the Chlorine Evolution Reaction. ACS Omega 2023; 8:35034-35043. [PMID: 37779938 PMCID: PMC10536866 DOI: 10.1021/acsomega.3c04525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 08/31/2023] [Indexed: 10/03/2023]
Abstract
The electrochemical chlorine evolution reaction (CER) is one of the most important electrochemical reactions. Typically, iridium (Ir)- or ruthenium (Ru)-based mixed metal oxides have been used as electrocatalysts for the CER due to their high activities and durabilities. However, the scarcity of Ir and Ru has indicated the need to develop alternative earth-abundant transition-metal-based CER catalysts. In this study, we report a Co3O4 nanoparticle (NP) catalyst synthesized by a hydrothermal method. Furthermore, Ru was successfully incorporated into the Co3O4 NPs (RuxCo3-xO4 NPs) for further improvement of catalytic performance in chlorine generation. Electrokinetic analyses combined with in situ X-ray absorption near-edge structure (XANES) results suggested an identical CER mechanism for the Co3O4 NPs and RuxCo3-xO4 NPs. Various characterization techniques demonstrated that the homogeneous substitution of Ru4+ ions into the Co3+ octahedral sites enhanced the structural disorder and changed the electronic state of Co3O4, resulting in additional exposed active sites. Remarkably, the Ru0.09Co2.91O4 NP electrode exhibited outstanding stability for more than 150 h even at a high current density of 500 mA/cm2, which shows its commercial viability for active chlorine generation.
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Affiliation(s)
- Won Il Choi
- Department
of Materials Science and Engineering, Seoul
National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
| | - Seungwoo Choi
- Department
of Materials Science and Engineering, Seoul
National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
- Soft
Foundry, Seoul National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
| | - Mani Balamurugan
- Department
of Materials Science and Engineering, Seoul
National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
- Soft
Foundry, Seoul National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
| | - Sunghak Park
- Department
of Materials Science and Engineering, Seoul
National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
| | - Kang Hee Cho
- Department
of Materials Science and Engineering, Seoul
National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
| | - Hongmin Seo
- Department
of Materials Science and Engineering, Seoul
National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
| | - Heonjin Ha
- Department
of Materials Science and Engineering, Seoul
National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
| | - Ki Tae Nam
- Department
of Materials Science and Engineering, Seoul
National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
- Soft
Foundry, Seoul National University, 1 Gwanak-ro, Seoul 08826, Republic of Korea
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Kim DY, Sub YJ, Kim HY, Cho KJ, Choi WI, Choi YJ, Lee MG, Hildebrandt F, Gee HY. LRRC6 regulates biogenesis of motile cilia by aiding FOXJ1 translocation into the nucleus. Cell Commun Signal 2023; 21:142. [PMID: 37328841 PMCID: PMC10273532 DOI: 10.1186/s12964-023-01135-y] [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: 12/26/2022] [Accepted: 04/22/2023] [Indexed: 06/18/2023] Open
Abstract
BACKGROUND LRRC6 is an assembly factor for dynein arms in the cytoplasm of motile ciliated cells, and when mutated, dynein arm components remained in the cytoplasm. Here, we demonstrate the role of LRRC6 in the active nuclear translocation of FOXJ1, a master regulator for cilia-associated gene transcription. METHODS We generated Lrrc6 knockout (KO) mice, and we investigated the role of LRRC6 on ciliopathy development by using proteomic, transcriptomic, and immunofluorescence analysis. Experiments on mouse basal cell organoids confirmed the biological relevance of our findings. RESULTS The absence of LRRC6 in multi-ciliated cells hinders the assembly of ODA and IDA components of cilia; in this study, we showed that the overall expression of proteins related to cilia decreased as well. Expression of cilia-related transcripts, specifically ODA and IDA components, dynein axonemal assembly factors, radial spokes, and central apparatus was lower in Lrrc6 KO mice than in wild-type mice. We demonstrated that FOXJ1 was present in the cytoplasm and translocated into the nucleus when LRRC6 was expressed and that this process was blocked by INI-43, an importin α inhibitor. CONCLUSIONS Taken together, these results hinted at the LRRC6 transcriptional regulation of cilia-related genes via the nuclear translocation of FOXJ1. Video Abstract.
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Affiliation(s)
- Dong Yun Kim
- Department of Pharmacology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
- Division of Gastroenterology, Department of Internal Medicine, Severance Hospital, Seoul, Republic of Korea
| | - Yu Jin Sub
- Department of Pharmacology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Hye-Youn Kim
- Department of Pharmacology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Kyeong Jee Cho
- Department of Pharmacology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Won Il Choi
- Division of Nephrology, Boston Children's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Yo Jun Choi
- Department of Pharmacology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Min Goo Lee
- Department of Pharmacology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Friedhelm Hildebrandt
- Division of Nephrology, Boston Children's Hospital, Harvard Medical School, Boston, MA, 02115, USA.
| | - Heon Yung Gee
- Department of Pharmacology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea.
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Jeon J, Lee H, Jeon MS, Kim SJ, Choi C, Kim KW, Yang DJ, Lee S, Bae YS, Choi WI, Jung J, Eyun SI, Yang S. Blockade of Activin Receptor IIB Protects Arthritis Pathogenesis by Non-Amplification of Activin A-ACVR2B-NOX4 Axis Pathway. Adv Sci (Weinh) 2023; 10:e2205161. [PMID: 36950748 DOI: 10.1002/advs.202205161] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 02/10/2023] [Indexed: 05/18/2023]
Abstract
Although activin receptor IIB (ACVR2B) is emerging as a novel pathogenic receptor, its ligand and assembled components (or assembly) are totally unknown in the context of osteoarthritis (OA) pathogenesis. The present results suggest that upregulation of ACVR2B and its assembly could affect osteoarthritic cartilage destruction. It is shown that the ACVR2B ligand, activin A, regulates catabolic factor expression through ACVR2B in OA development. Activin A Tg mice (Col2a1-Inhba) exhibit enhanced cartilage destruction, whereas heterozygous activin A KO mice (Inhba+/- ) show protection from cartilage destruction. In silico analysis suggests that the Activin A-ACVR2B axis is involved in Nox4-dependent ROS production. Activin A Tg:Nox4 KO (Col2a1-Inhba:Nox4-/- ) mice show inhibition of experimental OA pathogenesis. NOX4 directly binds to the C-terminal binding site on ACVR2B-ACVR1B and amplifies the pathogenic signal for cartilage destruction through SMAD2/3 signaling. Together, the findings reveal that the ACVR2B assembly, which comprises Activin A, ACVR2B, ACVR1B, Nox4, and AP-1-induced HIF-2α, accelerates OA development. Furthermore, it is shown that shRNA-mediated ACVR2B knockdown or trapping ligands of ACVR2B abrogate OA development by competitively disrupting the ACVR2B-Activin A interaction. These results suggest that the ACVR2B assembly is required to amplify osteoarthritic cartilage destruction and could be a potential therapeutic target in efforts to treat OA.
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Affiliation(s)
- Jimin Jeon
- Department of Biological Sciences, Sungkyunkwan University, Suwon, 16419, Republic of Korea
- CIRNO, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Hyemi Lee
- Department of Biological Sciences, Sungkyunkwan University, Suwon, 16419, Republic of Korea
- CIRNO, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Min-Seung Jeon
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Seok-Jung Kim
- Department of Orthopaedic Surgery, Uijeongbu St. Mary's Hospital, The Catholic University of Korea College of Medicine, Uijeongbu, 11765, Republic of Korea
| | - Cham Choi
- MicroCT Applications, 3rd floor, 11, Sumyeong-ro 1-gil, Gangseo-gu, Seoul, 07644, Republic of Korea
| | - Ki Woo Kim
- Department of Oral Biology, Yonsei University College of Dentistry, Seoul, 03722, Republic of Korea
- Department of Applied Biological Science, BK21 FOUR, Yonsei University College of Dentistry, Seoul, 03722, Republic of Korea
| | - Dong Joo Yang
- Department of Oral Biology, Yonsei University College of Dentistry, Seoul, 03722, Republic of Korea
- Department of Applied Biological Science, BK21 FOUR, Yonsei University College of Dentistry, Seoul, 03722, Republic of Korea
| | - Sangho Lee
- Department of Biological Sciences, Sungkyunkwan University, Suwon, 16419, Republic of Korea
- CIRNO, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Yong-Soo Bae
- Department of Biological Sciences, Sungkyunkwan University, Suwon, 16419, Republic of Korea
- CIRNO, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Won Il Choi
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, Cheongju, Chungbuk, 28160, Republic of Korea
| | - Juyeon Jung
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
| | - Seong-Il Eyun
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Siyoung Yang
- Department of Biological Sciences, Sungkyunkwan University, Suwon, 16419, Republic of Korea
- CIRNO, Sungkyunkwan University, Suwon, 16419, Republic of Korea
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Cho C, Oh H, Lee JS, Kang LJ, Oh EJ, Hwang Y, Kim SJ, Bae YS, Kim EJ, Kang HC, Choi WI, Yang S. Prussian blue nanozymes coated with Pluronic attenuate inflammatory osteoarthritis by blocking c-Jun N-terminal kinase phosphorylation. Biomaterials 2023; 297:122131. [PMID: 37119581 DOI: 10.1016/j.biomaterials.2023.122131] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Osteoarthritis (OA) is a degenerative joint disorder associated with inflammation, functional disability, and high socioeconomic costs. The development of effective therapies against inflammatory OA has been limited owing to its complex and multifactorial nature. The efficacy of Prussian blue nanozymes coated with Pluronic (PPBzymes), US Food and Drug Administration-approved components, and their mechanisms of action have been described in this study, and PPBzymes have been characterized as a new OA therapeutic. Spherical PPBzymes were developed via nucleation and stabilization of Prussian blue inside Pluronic micelles. A uniformly distributed diameter of approximately 204 nm was obtained, which was maintained after storage in an aqueous solution and biological buffer. This indicates that PPBzymes are stable and could have biomedical applications. In vitro data revealed that PPBzymes promote cartilage generation and reduce cartilage degradation. Moreover, intra-articular injections with PPBzymes into mouse joints revealed their long-term stability and effective uptake into the cartilage matrix. Furthermore, intra-articular PPBzymes injections attenuated cartilage degradation without exhibiting cytotoxicity toward the synovial membrane, lungs, and liver. Notably, based on proteome microarray data, PPBzymes specifically block the JNK phosphorylation, which modulates inflammatory OA pathogenesis. These findings indicate that PPBzymes might represent a biocompatible and effective nanotherapeutic for obstructing JNK phosphorylation.
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Affiliation(s)
- Chanmi Cho
- Department of Biological Sciences, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Hyeryeon Oh
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 28160, Republic of Korea; School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju, 61005, Republic of Korea
| | - Jin Sil Lee
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 28160, Republic of Korea; School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju, 61005, Republic of Korea
| | - Li-Jung Kang
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, 16499, Republic of Korea; AI-Superconvergence KIURI Translational Research Center, Ajou University School of Medicine, Suwon, 16499, Republic of Korea; Department of Pharmacology, Ajou University School of Medicine, Suwon, 16499, Republic of Korea
| | - Eun-Jeong Oh
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, 16499, Republic of Korea; Department of Pharmacology, Ajou University School of Medicine, Suwon, 16499, Republic of Korea
| | - Yiseul Hwang
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, 16499, Republic of Korea; Department of Physiology, Ajou University School of Medicine, Suwon, Gyeonggi, 16499, Republic of Korea
| | - Seok Jung Kim
- Department of Orthopedic Surgery, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Yong-Soo Bae
- Department of Biological Sciences, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Eun-Jeong Kim
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea.
| | - Ho Chul Kang
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, 16499, Republic of Korea; Department of Physiology, Ajou University School of Medicine, Suwon, Gyeonggi, 16499, Republic of Korea.
| | - Won Il Choi
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 28160, Republic of Korea.
| | - Siyoung Yang
- Department of Biological Sciences, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
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10
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Lee JS, Park E, Oh H, Choi WI, Koo H. Levan nanoparticles with intrinsic CD44-targeting ability for tumor-targeted drug delivery. Int J Biol Macromol 2023; 234:123634. [PMID: 36773871 DOI: 10.1016/j.ijbiomac.2023.123634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 02/05/2023] [Accepted: 02/06/2023] [Indexed: 02/11/2023]
Abstract
Existing anticancer therapeutics exhibit short half-lives, non-specificity, and severe side effects. To address this, active-targeting nanoparticles have been developed; however, the complex fabrication procedures, scale-up, and low reproducibility delay FDA approval, particularly for functionalized nanoparticles. We developed levan nanoparticles via simple one-pot nanoprecipitation for specific anticancer drug delivery. Levan is a plant polysaccharide which has a binding affinity to CD44 receptors and amphiphilicity. The nanoparticles are self-assembled and enable active-targeting without chemical modifications. The paclitaxel-loaded levan nanoparticles (PTX@LevNP) demonstrated a sustained PTX release and long-term stability. The LevNP can bind CD44 receptors on cancer cells, and PTX@LevNP showed enhanced anticancer activity in CD44-positive cells (SCC7 cells). In SCC7 tumor-bearing mice, the accumulation of LevNP in tumor tissue was 3.7 times higher than that of the free-dye, resulting in improved anticancer efficacy of PTX@LevNP. This new strategy using levan can produce nanoparticles for effective cancer treatment without complex fabrication procedures.
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Affiliation(s)
- Jin Sil Lee
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Republic of Korea; School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123, Cheomdan-gwagiro, Buk-gu, Gwangju, 61005, Republic of Korea
| | - Eunyoung Park
- Department of Medical Life Sciences, Department of Biomedicine & Health Sciences, Catholic Photomedicine Research Institute, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Hyeryeon Oh
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Republic of Korea; School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123, Cheomdan-gwagiro, Buk-gu, Gwangju, 61005, Republic of Korea
| | - Won Il Choi
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Republic of Korea.
| | - Heebeom Koo
- Department of Medical Life Sciences, Department of Biomedicine & Health Sciences, Catholic Photomedicine Research Institute, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea.
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11
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Kim S, Yu S, Kim J, Khaliq NU, Choi WI, Kim H, Sung D. Facile Fabrication of α-Bisabolol Nanoparticles with Improved Antioxidant and Antibacterial Effects. Antioxidants (Basel) 2023; 12:antiox12010207. [PMID: 36671070 PMCID: PMC9854552 DOI: 10.3390/antiox12010207] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/09/2023] [Accepted: 01/12/2023] [Indexed: 01/18/2023] Open
Abstract
Bioactive compounds are widely used in the bio-industry because of their antioxidant and antibacterial activities. Because of excessive oxidative stress, which causes various diseases in humans, and because preservatives used in bioproducts cause allergies and contact dermatitis, it is important to use natural bioactive compounds in bioproducts to minimize oxidative stress. α-bisabolol (ABS) is a natural compound with both antioxidant and antibacterial properties. However, its water-insolubility makes its utilization in bioproducts difficult. In this study, ABS-loaded polyglyceryl-4 caprate nanoparticles (ABS@NPs) with improved aqueous stability and ABS loading were fabricated using an encapsulation method. The long-term stability of the ABS@NPs was analyzed with dynamic light scattering and methylene blue-staining to determine the optimized ABS concentration in ABS@NPs (10 wt%). The ABS@NPs exhibited excellent antioxidant activity, according to the 2,2-diphenyl-1-picrylhydrazyl assay and in vitro reactive oxygen species generation in NIH-3T3 fibroblast cells, and an outstanding antibacterial effect, as determined using the Staphylococcus aureus colony-counting method. Furthermore, we evaluated the biocompatibility of the ABS@NPs in vitro. This study suggests that ABS@NPs with improved antioxidant and antibacterial properties can be used to treat diseases related to various oxidative stresses and can be applied in many fields, such as pharmaceuticals, cosmetics, and foods.
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Affiliation(s)
- Sangwoo Kim
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, 202 Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Republic of Korea
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Sohyeon Yu
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, 202 Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Republic of Korea
- Department of Chemical Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Jisu Kim
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, 202 Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Republic of Korea
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Nisar Ul Khaliq
- Department of Chemistry and Bioscience, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi 39177, Republic of Korea
| | - Won Il Choi
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, 202 Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Republic of Korea
| | - Hyungjun Kim
- Department of Chemistry and Bioscience, Kumoh National Institute of Technology, 61 Daehak-ro, Gumi 39177, Republic of Korea
- Correspondence: (H.K.); (D.S.); Tel.: +82-54-478-7830 (H.K.); +82-43-913-1511 (D.S.); Fax: +82-54-478-7859 (H.K.); +82-43-913-1597 (D.S.)
| | - Daekyung Sung
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, 202 Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Republic of Korea
- Correspondence: (H.K.); (D.S.); Tel.: +82-54-478-7830 (H.K.); +82-43-913-1511 (D.S.); Fax: +82-54-478-7859 (H.K.); +82-43-913-1597 (D.S.)
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12
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Salazar J, Carmona T, Zacconi FC, Venegas-Yazigi D, Cabello-Verrugio C, Il Choi W, Vilos C. The Human Dermis as a Target of Nanoparticles for Treating Skin Conditions. Pharmaceutics 2022; 15:pharmaceutics15010010. [PMID: 36678639 PMCID: PMC9860843 DOI: 10.3390/pharmaceutics15010010] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/12/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
Skin has a preventive role against any damage raised by harmful microorganisms and physical and chemical assaults from the external environment that could affect the body's internal organs. Dermis represents the main section of the skin, and its contribution to skin physiology is critical due to its diverse cellularity, vasculature, and release of molecular mediators involved in the extracellular matrix maintenance and modulation of the immune response. Skin structure and complexity limit the transport of substances, promoting the study of different types of nanoparticles that penetrate the skin layers under different mechanisms intended for skin illness treatments and dermo-cosmetic applications. In this work, we present a detailed morphological description of the dermis in terms of its structures and resident cells. Furthermore, we analyze the role of the dermis in regulating skin homeostasis and its alterations in pathophysiological conditions, highlighting its potential as a therapeutic target. Additionally, we describe the use of nanoparticles for skin illness treatments focused on dermis release and promote the use of metal-organic frameworks (MOFs) as an integrative strategy for skin treatments.
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Affiliation(s)
- Javier Salazar
- Laboratory of Nanomedicine and Targeted Delivery, School of Medicine, Universidad de Talca, Talca 3460000, Chile
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile
- Center for The Development of Nanoscience & Nanotechnology (CEDENNA), Universidad de Santiago de Chile, Santiago 8350709, Chile
| | - Thais Carmona
- Laboratory of Nanomedicine and Targeted Delivery, School of Medicine, Universidad de Talca, Talca 3460000, Chile
- Center for The Development of Nanoscience & Nanotechnology (CEDENNA), Universidad de Santiago de Chile, Santiago 8350709, Chile
- Departamento de Química Analítica, Química Física e Ingeniería Química and Instituto de Investigación Química “Andrés M. Del Rio” (IQAR), Universidad de Alcalá, 28805 Alcalá de Henares, Madrid, Spain
- Materials Chemistry Department, Faculty of Chemistry and Biology, University of Santiago of Chile (USACH), Santiago 9170022, Chile
| | - Flavia C. Zacconi
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile
- Institute for Biological and Medical Engineering, Schools of Engineering, Medicine and Biological Sciences, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile
- Center for Nanomedicine, Diagnostic & Drug Development (cND3), Universidad de Talca, Talca 3460000, Chile
| | - Diego Venegas-Yazigi
- Center for The Development of Nanoscience & Nanotechnology (CEDENNA), Universidad de Santiago de Chile, Santiago 8350709, Chile
- Materials Chemistry Department, Faculty of Chemistry and Biology, University of Santiago of Chile (USACH), Santiago 9170022, Chile
| | - Claudio Cabello-Verrugio
- Center for The Development of Nanoscience & Nanotechnology (CEDENNA), Universidad de Santiago de Chile, Santiago 8350709, Chile
- Laboratory of Muscle Pathology, Fragility and Aging, Faculty of Life Sciences, Universidad Andres Bello, Santiago 8370035, Chile
- Millennium Institute on Immunology and Immunotherapy, Faculty of Life Sciences, Universidad Andres Bello, Santiago 8370035, Chile
| | - Won Il Choi
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Chungbuk, Republic of Korea
| | - Cristian Vilos
- Laboratory of Nanomedicine and Targeted Delivery, School of Medicine, Universidad de Talca, Talca 3460000, Chile
- Center for The Development of Nanoscience & Nanotechnology (CEDENNA), Universidad de Santiago de Chile, Santiago 8350709, Chile
- Center for Nanomedicine, Diagnostic & Drug Development (cND3), Universidad de Talca, Talca 3460000, Chile
- Correspondence:
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13
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Oh H, Lee JS, Sung D, Yang S, Choi WI. Size-Controllable Prussian Blue Nanoparticles Using Pluronic Series for Improved Antioxidant Activity and Anti-Inflammatory Efficacy. Antioxidants (Basel) 2022; 11:antiox11122392. [PMID: 36552600 PMCID: PMC9774457 DOI: 10.3390/antiox11122392] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/21/2022] [Accepted: 11/29/2022] [Indexed: 12/04/2022] Open
Abstract
Prussian blue (PB) is a metal cluster nanoparticle (NP) of cyanide-bridged iron(II)-iron(III) and exhibits a characteristic blue color. Its peroxidase-, catalase-, and superoxide-dismutase-like activities effectively remove excess reactive oxygen species that induce inflammation and tumorigenesis. However, the dispersion of PB NPs is not sufficiently stable for their application in the biomedical field. In this study, we developed Pluronic-stabilized Prussian blue nanoparticles (PB/Plu NPs) using a series of Pluronic triblock copolymers as a template material for PB NPs. Considering the hydrophilic-lipophilic balance (HLB) values of the Pluronic series, including F68, F127, L35, P123, and L81, the diameters of the PB/Plu NPs decreased from 294 to 112 nm with decreasing HLB values. The smallest PB NP stabilized with Pluronic P123 (PB/PP123 NP) showed the strongest antioxidant and anti-inflammatory activities and wound-healing efficacy because of its large surface area. These results indicated that the spatial distribution of PB NPs in the micelles of Pluronic greatly improved the stability and reactive oxygen species scavenging activity of these NPs. Therefore, PB/Plu NPs using U.S.-FDA-approved Pluronic polymers show potential as biocompatible materials for various biomedical applications, including the treatment of inflammatory diseases in the clinic.
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Affiliation(s)
- Hyeryeon Oh
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, Cheongju 28160, Republic of Korea
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Jin Sil Lee
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, Cheongju 28160, Republic of Korea
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Daekyung Sung
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, Cheongju 28160, Republic of Korea
| | - Siyoung Yang
- Department of Pharmacology, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| | - Won Il Choi
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, Cheongju 28160, Republic of Korea
- Correspondence: ; Tel.: +82-43-913-1513
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14
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Oh H, Son D, Lee JS, Kim M, Sung D, Lee H, Choi WI. Reactive oxygen species scavenging nanofibers with chitosan-stabilized Prussian blue nanoparticles for enhanced wound healing efficacy. Int J Biol Macromol 2022; 219:835-843. [PMID: 35963348 DOI: 10.1016/j.ijbiomac.2022.08.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/22/2022] [Accepted: 08/07/2022] [Indexed: 11/25/2022]
Abstract
Chronic inflammatory wounds pose therapeutic challenges in the biomedical field. Polymeric nanofibrous matrices provide extracellular-matrix-like structures to facilitate wound healing; however, wound infection and the subsequent accumulation of reactive oxygen species (ROS) delay healing. Therefore, we herein developed electrospun nanofibers (NFs), composed of chitosan-stabilized Prussian blue (PBChi) nanoparticles (NPs) and poly(vinyl alcohol) (PVA), with ROS scavenging activity to impart antioxidant and wound healing properties. The PBChi NPs were prepared using chitosan with different molecular weights, and their weight ratio with respect to PVA was optimized to yield PBChi-NP-coated PVA NFs with well-defined NF structures. In situ and in vitro antioxidant activity assays showed that the PBChi/PVA NFs could effectively remove ROS. Particularly, PBChi/PVA NFs with a lower chitosan molecular weight exhibited greater antioxidant activity. The hydroxyl radical scavenging activity of PBChi10k/PVA NFs was 60.4 %, approximately two-fold higher than that of PBChi100k/PVA NFs. Further, at the concentration of 10 μg/mL, they could significantly lower the in vitro ROS level by up to 50.7 %. The NFs caused no significant reduction in cell viability, owing to the excellent biocompatibility of PVA with PBChi NPs. Treatment using PBChi/PVA NFs led to faster cell proliferation in in vitro scratch wounds, reducing their size from 202 to 162 μm. The PBChi/PVA NFs possess notable antioxidant and cell proliferation properties as ROS-scavenging wound dressings.
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Affiliation(s)
- Hyeryeon Oh
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Republic of Korea; School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Republic of Korea
| | - Dongwan Son
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Republic of Korea
| | - Jin Sil Lee
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Republic of Korea; School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Republic of Korea
| | - Myungwoong Kim
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Republic of Korea
| | - Daekyung Sung
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Republic of Korea.
| | - Hoik Lee
- Advanced Textile R&D Department, Research Institute of Convergence Technology, Korea Institute of Industrial Technology (KITECH), Ansan 15588, Republic of Korea.
| | - Won Il Choi
- Center for Bio-Healthcare Materials, Bio-Convergence Materials R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Republic of Korea.
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15
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Gwon K, Park JD, Lee S, Choi WI, Hwang Y, Mori M, Yu JS, Lee DN. Injectable hyaluronic acid hydrogel encapsulated with Si-based NiO nanoflower by visible light cross-linking: Its antibacterial applications. Int J Biol Macromol 2022; 208:149-158. [PMID: 35304194 DOI: 10.1016/j.ijbiomac.2022.03.051] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 03/03/2022] [Accepted: 03/09/2022] [Indexed: 12/26/2022]
Abstract
Bacterial infections have become a severe threat to human health and antibiotics have been developed to treat them. However, extensive use of antibiotics has led to multidrug-resistant bacteria and reduction of their therapeutic effects. An efficient solution may be localized application of antibiotics using a drug delivery system. For clinical application, they need to be biodegradable and should offer a prolonged antibacterial effect. In this study, a new injectable and visible-light-crosslinked hyaluronic acid (HA) hydrogel loaded with silicon (Si)-based nickel oxide (NiO) nanoflowers (Si@NiO) as an antibacterial scaffold was developed. Si@NiO nanoflowers were synthesized using chemical bath deposition before encapsulating them in the HA hydrogel under a mild visible-light-crosslinking conditions to generate a Si@NiO-hydrogel. Si@NiO synthesis was confirmed using scanning electron microscopy, transmission electron microscopy, and powder X-ray diffraction. As-prepared Si@NiO-hydrogel exhibited enhanced mechanical properties compared to a control bare hydrogel sample. Moreover, Si@NiO-hydrogel exhibits excellent antibacterial properties against three bacterial strains (P. aeruginosa, K. pneumoniae, and methicillin-resistant Staphylococcus aureus (>99.9% bactericidal rate)) and negligible cytotoxicity toward mouse embryonic fibroblasts. Therefore, Si@NiO-hydrogel has the potential for use in tissue engineering and biomedical applications owing to its injectability, visible-light crosslink ability, degradability, biosafety, and superior antibacterial property.
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Affiliation(s)
- Kihak Gwon
- Ingenium College of Liberal Arts (Chemistry), Kwangwoon University, Seoul 01897, Republic of Korea; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55902, USA
| | - Jong-Deok Park
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
| | - Seonhwa Lee
- Ingenium College of Liberal Arts (Chemistry), Kwangwoon University, Seoul 01897, Republic of Korea
| | - Won Il Choi
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Republic of Korea
| | - Youngmin Hwang
- Columbia Center for Human Development (CCHD), Pulmonary Allergy & Critical Care Medicine, Department of Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Munemasa Mori
- Columbia Center for Human Development (CCHD), Pulmonary Allergy & Critical Care Medicine, Department of Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Jong-Sung Yu
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea.
| | - Do Nam Lee
- Ingenium College of Liberal Arts (Chemistry), Kwangwoon University, Seoul 01897, Republic of Korea.
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16
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Xia C, Chon TS, Takasu F, Choi WI, Park YS. Simulating Pine Wilt Disease Dispersal With an Individual-Based Model Incorporating Individual Movement Patterns of Vector Beetles. Front Plant Sci 2022; 13:886867. [PMID: 35677247 PMCID: PMC9168678 DOI: 10.3389/fpls.2022.886867] [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] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 04/19/2022] [Indexed: 06/15/2023]
Abstract
Individual movements of the insect vector pine sawyer beetles were incorporated into an individual-based model (IBM) to elucidate the dispersal of pine wilt disease (PWD) and demonstrate the effects of control practices. The model results were compared with the spatial data of infested pine trees in the Gijang-gun area of Busan, Republic of Korea. Step functions with long- and middle-distance movements of individual beetles effectively established symptomatic and asymptomatic trees for the dispersal of PWD. Pair correlations and pairwise distances were suitable for evaluating PWD dispersal between model results and field data at short and long scales, respectively. The accordance between model and field data was observed in infestation rates at 0.08 and 0.09 and asymptomatic rates at 0.16-0.17 for disease dispersal. Eradication radii longer than 20 m would effectively control PWD dispersal for symptomatic transmission and 20-40 m for asymptomatic transmission. However, the longer eradication radii were more effective at controlling PWD. Therefore, to maximize control effects, a longer radius of at least 40 m is recommended for clear-cutting eradication. The IBM of individual movement patterns provided practical information on interlinking the levels of individuals and populations and could contribute to the monitoring and management of forest pests where individual movement is important for population dispersal.
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Affiliation(s)
- Chunlei Xia
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
| | - Tae-Soo Chon
- Ecology and Future Research Institute, Busan, South Korea
| | - Fugo Takasu
- Department of Environmental Science, Nara Women's University, Nara, Japan
| | - Won Il Choi
- Division of Forest Ecology, National Institute of Forest Science, Seoul, South Korea
| | - Young-Seuk Park
- Department of Biology, Kyung Hee University, Seoul, South Korea
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Lee S, Cho H, Choi Y, Choi WI, Chung HI, Lim N, Nam Y, Jeon S. Path‐finding algorithm as a dispersal assessment method for invasive species with human‐vectored long‐distance dispersal event. DIVERS DISTRIB 2022. [DOI: 10.1111/ddi.13524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
- Sung‐Joo Lee
- Division of Environmental Science & Ecological Engineering Korea University Seoul Korea
- Environmental Assessment Group Korea Environment Institute Sejong Korea
| | - Hyojin Cho
- Division of Environmental Science & Ecological Engineering Korea University Seoul Korea
| | - Yuyoung Choi
- OJEONG Resilience Institute Korea University Seoul Korea
| | - Won Il Choi
- Forest Ecology Division National Institute of Forest Science Seoul Korea
| | - Hye In Chung
- OJEONG Resilience Institute Korea University Seoul Korea
| | - No Ol Lim
- Division of Environmental Science & Ecological Engineering Korea University Seoul Korea
| | - Youngwoo Nam
- Division of Forest Diseases and Insect Pests National Institute of Forest Science Seoul Korea
| | - Seongwoo Jeon
- Division of Environmental Science & Ecological Engineering Korea University Seoul Korea
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18
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Park H, Jeon H, Cha HJ, Bang J, Song Y, Choi M, Sung D, Choi WI, Lee JH, Woo JS, Jon S, Kim S. Purification of Therapeutic Antibodies Using the Ca 2+-Dependent Phase-Transition Properties of Calsequestrin. Anal Chem 2022; 94:5875-5882. [PMID: 35389207 DOI: 10.1021/acs.analchem.2c00026] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Affinity chromatography utilizing specific interactions between therapeutic proteins and bead-immobilized capturing agents is a standard method for protein purification, but its scalability is limited by long purification times, activity loss by the capturing molecules and/or purified protein, and high costs. Here, we report a platform for purifying therapeutic antibodies via affinity precipitation using the endogenous calcium ion-binding protein, calsequestrin (CSQ), which undergoes a calcium ion-dependent phase transition. In this method, ZZ-CSQ fusion proteins with CSQ and an affinity protein (Z domain of protein A) capture antibodies and undergo multimerization and subsequent aggregation in response to calcium ions, enabling the antibody to be collected by affinity precipitation. After robustly validating and optimizing the performance of the platform, the ZZ-CSQ platform can rapidly purify therapeutic antibodies from industrial harvest feedstock with high purity (>97%) and recovery yield (95% ± 3%). In addition, the ZZ-CSQ platform outperforms protein A-based affinity chromatography (PAC) in removing impurities, yielding ∼20-fold less DNA and ∼4.8-fold less host cell protein (HCP) contamination. Taken together, this platform is rapid, recyclable, scalable, and cost-effective, and it shows antibody-purification performance superior or comparable to that of the standard affinity chromatography method.
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Affiliation(s)
- Heesun Park
- Korea Institute of Ceramic Engineering and Technology, Center for Convergence Bioceramic Materials, 202 Osongsaengmyeong 1-ro, Chengju-si 28160, Chungcheongbuk-do, Republic of Korea.,Department of Life Science, Korea University, 145 Anam-ro, Seoul 02841, Republic of Korea
| | - Hyungsu Jeon
- Department of Biological Sciences, KAIST Institute for Biocentury, Korea Adavanced Insitute of Science and Technology (KAIST), 291 Daehak-ro, Daejeon 34141, Republic of Korea
| | - Hyung Jin Cha
- Department of Life Science, Korea University, 145 Anam-ro, Seoul 02841, Republic of Korea
| | - Jinho Bang
- Korea Institute of Ceramic Engineering and Technology, Center for Convergence Bioceramic Materials, 202 Osongsaengmyeong 1-ro, Chengju-si 28160, Chungcheongbuk-do, Republic of Korea
| | - Youngwoo Song
- Korea Institute of Ceramic Engineering and Technology, Center for Convergence Bioceramic Materials, 202 Osongsaengmyeong 1-ro, Chengju-si 28160, Chungcheongbuk-do, Republic of Korea
| | - Mihyun Choi
- Korea Institute of Ceramic Engineering and Technology, Center for Convergence Bioceramic Materials, 202 Osongsaengmyeong 1-ro, Chengju-si 28160, Chungcheongbuk-do, Republic of Korea
| | - Daekyung Sung
- Korea Institute of Ceramic Engineering and Technology, Center for Convergence Bioceramic Materials, 202 Osongsaengmyeong 1-ro, Chengju-si 28160, Chungcheongbuk-do, Republic of Korea
| | - Won Il Choi
- Korea Institute of Ceramic Engineering and Technology, Center for Convergence Bioceramic Materials, 202 Osongsaengmyeong 1-ro, Chengju-si 28160, Chungcheongbuk-do, Republic of Korea
| | - Jin Hyung Lee
- Korea Institute of Ceramic Engineering and Technology, Center for Convergence Bioceramic Materials, 202 Osongsaengmyeong 1-ro, Chengju-si 28160, Chungcheongbuk-do, Republic of Korea
| | - Jae-Sung Woo
- Department of Life Science, Korea University, 145 Anam-ro, Seoul 02841, Republic of Korea
| | - Sangyong Jon
- Department of Biological Sciences, KAIST Institute for Biocentury, Korea Adavanced Insitute of Science and Technology (KAIST), 291 Daehak-ro, Daejeon 34141, Republic of Korea.,Center for Precision Bio-Nanomedicine, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Daejeon 34141, Republic of Korea
| | - Sunghyun Kim
- Korea Institute of Ceramic Engineering and Technology, Center for Convergence Bioceramic Materials, 202 Osongsaengmyeong 1-ro, Chengju-si 28160, Chungcheongbuk-do, Republic of Korea
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Oh H, Lee JS, Lee HS, Sung D, Choi WI. A Novel Polyvinylpyrrolidone-Stabilized Illite Microparticle with Enhanced Antioxidant and Antibacterial Effect. Polymers (Basel) 2021; 13:4275. [PMID: 34960826 PMCID: PMC8707809 DOI: 10.3390/polym13244275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/02/2021] [Accepted: 12/02/2021] [Indexed: 12/29/2022] Open
Abstract
Illite is a clay mineral that shows antioxidant and antibacterial activities because of the abundance of important clay elements in its structure. However, illite has low bioactivity due to its low solubility and electron-donating ability in aqueous solutions. Therefore, we aimed to develop polyvinylpyrrolidone (PVP)-stabilized illite microparticles (P-lite MPs) via polymer adsorption on illite surfaces. An increasing amount of PVP was used to coat a fixed amount of illite to prepare P-lite MPs of different hydrodynamic diameters in the range of 4-9 μm. These sizes were maintained for 2 weeks during storage in a biological buffer without any noticeable changes. The stabilization of illite microparticles using a hydrophilic PVP polymer improved their aqueous dispersity and free radical-scavenging activity. Since the large surface area of microparticles provides several sites for interactions, the smallest P-lite MP exhibited the highest antioxidant and antibacterial activities. More importantly, the MPs showed effective free radical-scavenging activity in vitro without any cytotoxicity. Therefore, P-lite MPs with improved bioavailability may represent a suitable bioactive material for various industrial and biomedical applications.
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Affiliation(s)
- Hyeryeon Oh
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Korea; (H.O.); (J.S.L.); (H.S.L.)
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Korea
| | - Jin Sil Lee
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Korea; (H.O.); (J.S.L.); (H.S.L.)
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Korea
| | - Hye Sun Lee
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Korea; (H.O.); (J.S.L.); (H.S.L.)
| | - Daekyung Sung
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Korea; (H.O.); (J.S.L.); (H.S.L.)
| | - Won Il Choi
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Korea; (H.O.); (J.S.L.); (H.S.L.)
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20
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Gwon K, Choi WI, Lee S, Lee JS, Shin JH. Biodegradable hyaluronic acid-based, nitric oxide-releasing nanofibers for potential wound healing applications. Biomater Sci 2021; 9:8160-8170. [PMID: 34730126 DOI: 10.1039/d1bm01019k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nitric oxide (NO) is one of the smallest gas molecules with pharmaceutical and potential wound therapeutic effects due to its ability to regulate inflammation and eradicate bacterial infections. Recently, NO-releasing synthetic polymer-based nanofibers have become promising candidates for wound healing due to their facile functionalisation, tunable mechanical properties, and large effective surface areas. However, synthetic polymer-based nanofibers suffer from poor degradability in the physiological milieu, which restricts their use in in vivo applications. In this study, we developed biodegradable and nitric oxide-releasing nanofibers for potential wound healing applications. We synthesised dual-functionalised hyaluronic acid (HA) containing methacrylate groups and N-diazeniumdiolate (NONOate)-NO donor groups and capable of forming crosslinked, electrospun nanofibers, with an effective NO payload, through an electrospinning process and photoinitiated polymerisation. Nuclear magnetic resonance, Fourier transform infrared spectroscopy, and ultraviolet-visible spectroscopy confirmed the successful synthesis of the functionalised HA. Control over both the NO donor and HA concentrations allowed for the preparation of NO-releasing, HA-based nanofibers of varying diameters (240-490 nm), NO payloads (10-620 nmol mg-1), maximum amounts of NO released (160-8920 ppb mg-1), and NO release durations (1.5-20.2 h). Moreover, the NO-releasing nanofibers had good biodegradability and potential wound healing effects without any observed cytotoxicity. The biodegradable and NO-releasing HA-based nanofibers developed in this study have the potential application in wound healing.
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Affiliation(s)
- Kihak Gwon
- Department of Chemistry, Kwangwoon University, 20 Kwangwoon-ro, Nowon-gu, Seoul 01897, Republic of Korea.
| | - Won Il Choi
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Republic of Korea
| | - Seonhwa Lee
- Department of Chemistry, Kwangwoon University, 20 Kwangwoon-ro, Nowon-gu, Seoul 01897, Republic of Korea.
| | - Jin Sil Lee
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Republic of Korea
| | - Jae Ho Shin
- Department of Chemistry, Kwangwoon University, 20 Kwangwoon-ro, Nowon-gu, Seoul 01897, Republic of Korea.
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21
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Hwang Y, Lee JS, An H, Oh H, Sung D, Tae G, Choi WI. Hydroxyapatite-embedded levan composite hydrogel as an injectable dermal filler for considerable enhancement of biological efficacy. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.08.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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22
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Lee JS, Hwang Y, Oh H, Sung D, Tae G, Choi WI. All-in-one nanosponge with pluronic shell for synergistic anticancer therapy through effectively overcoming multidrug resistance in cancer. Nanomedicine 2021; 40:102486. [PMID: 34748960 DOI: 10.1016/j.nano.2021.102486] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 09/29/2021] [Accepted: 10/11/2021] [Indexed: 12/24/2022]
Abstract
Overexpression of P-glycoprotein (P-gp) on cancer cells is a major hurdle to effectively treat tumors with multidrug resistance (MDR). The current study aimed to explore anticancer drug and P-gp inhibitor delivery as a promising strategy to efficiently treat colorectal cancer with MDR. To this end, a multidrug-loaded all-in-one nanosponge (ANS) was developed to simultaneously deliver doxorubicin (DOX), paclitaxel (PTX), and the P-gp inhibitor tetrandrine (TET), referred to as DOX/PTX/TET@ANS, without chemical conjugation. ANS with high loading content and efficiency facilitated a pH-dependent and controlled release with different profiles. Compared to free drugs and DOX/PTX@ANS, DOX/PTX/TET@ANS exhibited more effective anticancer effects on P-gp-overexpressing colorectal cancer cells and solid tumor mouse xenografts, without major toxicity. Notably, ANS composed of pluronic shell induced in vitro P-gp inhibition compared to TET, implying a synergistic anticancer effect. These findings suggest that ANS can encapsulate multiple drugs to efficiently deliver chemotherapy, particularly in MDR tumors.
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Affiliation(s)
- Jin Sil Lee
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, Cheongju, Chungbuk, Republic of Korea; School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
| | - Youngmin Hwang
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
| | - Hyeryeon Oh
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, Cheongju, Chungbuk, Republic of Korea; School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
| | - Daekyung Sung
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, Cheongju, Chungbuk, Republic of Korea
| | - Giyoong Tae
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea.
| | - Won Il Choi
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, Cheongju, Chungbuk, Republic of Korea.
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Jang S, Choi EJ, Cheon HJ, Choi WI, Shin WS, Lim JM. Fabrication of Al 2O 3/ZnO and Al 2O 3/Cu Reinforced Silicone Rubber Composite Pads for Thermal Interface Materials. Polymers (Basel) 2021; 13:3259. [PMID: 34641076 PMCID: PMC8513005 DOI: 10.3390/polym13193259] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 09/17/2021] [Accepted: 09/20/2021] [Indexed: 12/25/2022] Open
Abstract
Thermal interface materials (also known as thermal pads) are widely used as a crucial part to dissipate heat generated in miniaturized and integrated electronic components. Here, we systematically investigated the effects of small ceramic and metallic powders in rubbery thermal composite pads with a high content of aluminum oxide filler on the thermal conductivity of the composite pads. We optimized the compositions of aluminum oxide fillers with two different sizes in a polydimethylsiloxane (PDMS) matrix for rubbery composite pads with a high thermal conductivity. Based on the optimized compositions, zinc oxide powder or copper powder with an average size of 1 μm was used to replace 5 μm-sized aluminum oxide filler to examine the effects of the small ceramic and metallic powders, respectively, on the thermal conductivity of the composite pads. When zinc oxide powder was used as the replacement, the thermal conductivity of the rubbery composite pads decreased because more air bubbles were generated during the processing of the mixed paste with increased viscosity. On the other hand, when the copper powder was used as a replacement, a thermal conductivity of up to 2.466 W/m·K was achieved for the rubbery composite pads by optimizing the mixing composition. SEM images and EDS mapping confirmed that all fillers were evenly distributed in the rubbery composite pads.
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Affiliation(s)
- Seokkyu Jang
- Department of Chemical Engineering, Soonchunhyang University, 22 Soonchunhyang-ro, Shinchang-myeon, Asan-si 31538, Chungcheongnam-do, Korea;
- Doosung Industrial Co., Ltd., 36 Ansantekom 1-gil, Sangnok-gu, Ansan-si 15523, Gyeonggi-do, Korea;
| | - Eun Ji Choi
- Department of Electronic Materials and Devices Engineering, Soonchunhyang University, 22 Soonchunhyang-ro, Shinchang-myeon, Asan-si 31538, Chungcheongnam-do, Korea;
| | - Han Jin Cheon
- Doosung Industrial Co., Ltd., 36 Ansantekom 1-gil, Sangnok-gu, Ansan-si 15523, Gyeonggi-do, Korea;
| | - Won Il Choi
- Center for Convergence Bioceramic Materials, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Chungbuk, Korea
| | - Woon Seo Shin
- Doosung Industrial Co., Ltd., 36 Ansantekom 1-gil, Sangnok-gu, Ansan-si 15523, Gyeonggi-do, Korea;
| | - Jong-Min Lim
- Department of Chemical Engineering, Soonchunhyang University, 22 Soonchunhyang-ro, Shinchang-myeon, Asan-si 31538, Chungcheongnam-do, Korea;
- Department of Electronic Materials and Devices Engineering, Soonchunhyang University, 22 Soonchunhyang-ro, Shinchang-myeon, Asan-si 31538, Chungcheongnam-do, Korea;
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Lee DS, Choi WI, Nam Y, Park YS. Predicting potential occurrence of pine wilt disease based on environmental factors in South Korea using machine learning algorithms. ECOL INFORM 2021. [DOI: 10.1016/j.ecoinf.2021.101378] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Lee JS, Oh H, Kim S, Lee JH, Shin YC, Choi WI. A Novel Chitosan Nanosponge as a Vehicle for Transepidermal Drug Delivery. Pharmaceutics 2021; 13:pharmaceutics13091329. [PMID: 34575405 PMCID: PMC8468160 DOI: 10.3390/pharmaceutics13091329] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 08/20/2021] [Accepted: 08/21/2021] [Indexed: 12/17/2022] Open
Abstract
Transepidermal drug delivery achieves high drug concentrations at the action site and ensures continuous drug delivery and better patient compliance with fewer adverse effects. However, drug delivery through topical application is still limited in terms of drug penetration. Chitosan is a promising enhancer to overcome this constraint, as it can enhance drug diffusion by opening the tight junctions of the stratum corneum. Therefore, here, we developed a novel chitosan nanosponge (CNS) with an optimal ratio and molecular weight of chitosan to improve drug penetration through skin. To prepare the CNS, two types of chitosan (3 and 10 kDa) were each conjugated with poloxamer 407 using para-nitrophenyl chloroformate, and the products were mixed with poloxamer 407 at ratios of 5:5, 8:2, and 10:0. The resulting mixtures were molded to produce flexible soft nanosponges by simple nanoprecipitation. The CNSs were highly stable in biological buffer for four weeks and showed no toxicity in human dermal fibroblasts. The CNSs increased drug permeability through human cadaver skin in a Franz-type diffusion cell, with substantially higher permeability with 3 kDa chitosan at a ratio of 8:2. This suggests the applicability of the novel CNS as a promising carrier for efficient transepidermal drug delivery.
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Affiliation(s)
- Jin Sil Lee
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Korea; (J.S.L.); (H.O.); (S.K.)
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Cheomdan-gwagiro 123, Buk-gu, Gwangju 61005, Korea
| | - Hyeryeon Oh
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Korea; (J.S.L.); (H.O.); (S.K.)
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Cheomdan-gwagiro 123, Buk-gu, Gwangju 61005, Korea
| | - Sunghyun Kim
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Korea; (J.S.L.); (H.O.); (S.K.)
| | - Jeung-Hoon Lee
- SKINMED Co., Ltd., Daejeon 34028, Korea; (J.-H.L.); (Y.C.S.)
| | - Yong Chul Shin
- SKINMED Co., Ltd., Daejeon 34028, Korea; (J.-H.L.); (Y.C.S.)
- Amicogen Inc., 64 Dongburo 1259, Jinsung, Jinju 52621, Korea
| | - Won Il Choi
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Korea; (J.S.L.); (H.O.); (S.K.)
- Correspondence: ; Tel.: +82-43-913-1513
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Lee JS, Oh H, Sung D, Lee JH, Choi WI. High Solubilization and Controlled Release of Paclitaxel Using Thermosponge Nanoparticles for Effective Cancer Therapy. Pharmaceutics 2021; 13:1150. [PMID: 34452111 PMCID: PMC8398058 DOI: 10.3390/pharmaceutics13081150] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 07/19/2021] [Accepted: 07/23/2021] [Indexed: 12/12/2022] Open
Abstract
Cancer, which is a leading cause of death, contributes significantly to reducing life expectancy worldwide. Even though paclitaxel (PTX) is known as one of the main anticancer drugs, it has several limitations, including low solubility in aqueous solutions, a limited dosage range, an insufficient release amount, and patient resistance. To overcome these limitations, we suggest the development of PTX-loaded thermosponge nanoparticles (PTX@TNP), which result in improved anticancer effects, via a simple nanoprecipitation method, which allows the preparation of PTX@TNPs with hydrophobic interactions without any chemical conjugation. Further, to improve the drug content and yield of the prepared complex, the co-organic solvent ratio was optimized. Thus, it was observed that the drug release rate increased as the drug capacity of PTX@TNPs increased. Furthermore, increasing PTX loading led to considerable anticancer activity against multidrug resistance (MDR)-related colorectal cancer cells (HCT 15), implying a synergistic anticancer effect. These results suggest that the solubilization of high drug amounts and the controlled release of poorly water-soluble PTX using TNPs could significantly improve its anticancer therapy, particularly in the treatment of MDR-p-glycoprotein-overexpressing cancers.
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Affiliation(s)
- Jin Sil Lee
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Korea; (J.S.L.); (H.O.); (D.S.); (J.H.L.)
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Cheomdan-gwagiro 123, Buk-gu, Gwangju 61005, Korea
| | - Hyeryeon Oh
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Korea; (J.S.L.); (H.O.); (D.S.); (J.H.L.)
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Cheomdan-gwagiro 123, Buk-gu, Gwangju 61005, Korea
| | - Daekyung Sung
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Korea; (J.S.L.); (H.O.); (D.S.); (J.H.L.)
| | - Jin Hyung Lee
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Korea; (J.S.L.); (H.O.); (D.S.); (J.H.L.)
| | - Won Il Choi
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju 28160, Korea; (J.S.L.); (H.O.); (D.S.); (J.H.L.)
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Han H, Yoon JH, Yi GR, Choi WI, Lim JM. High-speed continuous production of polymeric nanoparticles with improved stability using a self-aligned coaxial turbulent jet mixer. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.02.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Kim H, Bang KM, Ha H, Cho NH, Namgung SD, Im SW, Cho KH, Kim RM, Choi WI, Lim YC, Shin JY, Song HK, Kim NK, Nam KT. Tyrosyltyrosylcysteine-Directed Synthesis of Chiral Cobalt Oxide Nanoparticles and Peptide Conformation Analysis. ACS Nano 2021; 15:979-988. [PMID: 33332089 DOI: 10.1021/acsnano.0c07655] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Chiral inorganic nanomaterials have revealed opportunities in various fields owing to their strong light-matter interactions. In particular, chiral metal oxide nanomaterials that can control light and biochemical reactions have been highlighted due to their catalytic activity and biocompatibility. In this study, we present the synthesis of chiral cobalt oxide nanoparticles with a g-factor of 0.01 in the UV-visible region using l- and d-Tyr-Tyr-Cys ligands. The conformation of the Tyr-Tyr-Cys peptide on the nanoparticle surfaces was identified by 2D NMR spectroscopy analysis. In addition, the sequence effect of Tyr-Tyr-Cys developing chiral nanoparticles was analyzed. The revealed peptide structure, along with the experimental results, demonstrate the important role of the thiol group and carboxyl group of the Tyr-Tyr-Cys ligand in chirality evolution. Importantly, due to the magnetic properties of chiral cobalt oxide nanoparticles and their strong absorption in the UV region, the circular dichroism (CD) responses can be dramatically modulated under an external magnetic field.
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Affiliation(s)
- Hyeohn Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Kyeong-Mi Bang
- Department of Life Sciences, Korea University, Seoul 02841, Republic of Korea
- Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Heonjin Ha
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Nam Heon Cho
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Seok Daniel Namgung
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Sang Won Im
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Kang Hee Cho
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Ryeong Myeong Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Won Il Choi
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Yae-Chan Lim
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Ji-Yeon Shin
- Department of Life Sciences, Korea University, Seoul 02841, Republic of Korea
- Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Hyun Kyu Song
- Department of Life Sciences, Korea University, Seoul 02841, Republic of Korea
| | - Nak-Kyoon Kim
- Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Ki Tae Nam
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
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Na Y, Woo J, Choi WI, Sung D. Novel carboxylated ferrocene polymer nanocapsule with high reactive oxygen species sensitivity and on-demand drug release for effective cancer therapy. Colloids Surf B Biointerfaces 2021; 200:111566. [PMID: 33485085 DOI: 10.1016/j.colsurfb.2021.111566] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 12/31/2020] [Accepted: 01/05/2021] [Indexed: 11/18/2022]
Abstract
Multidrug resistance (MDR) is a major clinical issue leading to substantial reductions in the intracellular levels of anticancer drugs. To overcome MDR, stimulus-responsive polymeric nanotherapeutics that facilitate drug release and cellular uptake at target sites have emerged as promising tools for safe and effective cancer treatment. Among these nanotherapeutics, reactive oxygen species (ROS)-responsive nanocapsules are ideal carriers, as abnormally increased ROS levels can drive controlled drug release at target sites. In this study, we developed novel, high ROS-responsive carboxylated ferrocene nanocapsules (CFNCs) using solvents of different polarities for effective multidrug-resistant cancer therapy. The CFNCs were prepared via the self-assembly of an amphiphilic carboxylated ferrocene polymer composed of a hydrophilic COOH segment and a hydrophobic ferrocenylmethyl methacrylate segment possessing a ROS-responsive group. The size and ROS sensitivity of self-assembled CFNCs could be controlled by using solvents of different polarities during the simple nanoprecipitation process. The CFNCs showed a high loading content (approximately 30 wt%) and on-demand release of paclitaxel under both normal and tumor-mimicking conditions, and exhibited synergistic anticancer effects in multidrug-resistant colorectal cancer cells (HCT-15). Our findings suggest that CFNCs can be applied as carriers for effective cancer therapy.
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Affiliation(s)
- Yoonhee Na
- Center for Convergence Bioceramic Materials, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 28160, Republic of Korea; School of Chemical & Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Jiseob Woo
- Center for Convergence Bioceramic Materials, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 28160, Republic of Korea; School of Chemical & Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Won Il Choi
- Center for Convergence Bioceramic Materials, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 28160, Republic of Korea.
| | - Daekyung Sung
- Center for Convergence Bioceramic Materials, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 28160, Republic of Korea.
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Oh H, Lee JS, Sung D, Lim JM, Choi WI. Potential Antioxidant and Wound Healing Effect of Nano-Liposol with High Loading Amount of Astaxanthin. Int J Nanomedicine 2020; 15:9231-9240. [PMID: 33262585 PMCID: PMC7686476 DOI: 10.2147/ijn.s272650] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 10/20/2020] [Indexed: 12/12/2022] Open
Abstract
Background Astaxanthin (ASTA), a carotenoid, is a strong antioxidant. However, its application in functional foods, pharmaceuticals, and cosmetics remains limited due to its low aqueous solubility and stability. Several different encapsulating materials have been used to improve the stability and bioavailability of ASTA; however, the currently investigated nano-carriers for ASTA require additional improvements with regard to their loading capacity and stability. Methods In this study, we developed lecithin nano-liposol (Lec NS) as a novel carrier of ASTA using a simple emulsion evaporation method. The physicochemical characteristics including hydrodynamic diameter, polydispersity index, surface charge and morphology were analyzed by DLS and TEM. The antioxidant activity of the ASTA-loaded Lec NS (ASTA@Lec NS) was evaluated using a DPPH radical scavenging assay and in vitro antioxidant assay. The study of in vitro wound healing efficacy was carried out to observe the beneficial effect of antioxidant activity of ASTA@Lec NS on cell migration. Results ASTA@Lec NS showed improved stability and efficacy owing to improved aqueous solubility of ASTA inside Lec NS. Both in situ and in vitro antioxidant activities of ASTA@Lec NS were higher than that of bare ASTA and Lec NS. It also exhibited strong wound healing efficacy by regulation of ROS level in in vitro cell model. Conclusion This study revealed that the encapsulation of ASTA into Lec NS using a wet phase transfer enhanced its physiological stability and bioavailability for effective scavenging of reactive oxygen species.
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Affiliation(s)
- Hyeryeon Oh
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, Cheongju, Chungbuk 28160, Republic of Korea.,School of Materials Science and Engineering and Department of Nanobio Materials and Electronics, Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea
| | - Jin Sil Lee
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, Cheongju, Chungbuk 28160, Republic of Korea.,School of Materials Science and Engineering and Department of Nanobio Materials and Electronics, Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea
| | - Daekyung Sung
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, Cheongju, Chungbuk 28160, Republic of Korea
| | - Jong-Min Lim
- Department of Chemical Engineering, Soonchunhyang University, Asan, Chungnam 31538, Republic of Korea.,Department of Electronic Materials and Devices Engineering, Soonchunhyang University, Asan, Chungnam 31538, Republic of Korea
| | - Won Il Choi
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, Cheongju, Chungbuk 28160, Republic of Korea
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Kim B, Seo H, Lee JH, Kim S, Choi WI, Sung D, Moon E. Enhanced Antibiofilm Effects of N 2 Plasma-Treated Buffer Combined with Antimicrobial Hexapeptides Against Plant Pathogens. Polymers (Basel) 2020; 12:polym12091992. [PMID: 32883040 PMCID: PMC7564792 DOI: 10.3390/polym12091992] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/27/2020] [Accepted: 08/31/2020] [Indexed: 12/31/2022] Open
Abstract
Suppression of pathogenic bacterial growth to increase food and agricultural productivity is important. We previously developed novel hexapeptides (KCM12 and KCM21) with antimicrobial activities against various phytopathogenic bacteria and N2 plasma-treated buffer (NPB) as an alternative method for bacterial inactivation and as an antibiofilm agent of crops. Here, we developed an enhanced antibiofilm method based on antimicrobial hexapeptides with N2 plasma-treated buffer against plant pathogens. Our results demonstrated that hexapeptides effectively inhibited the growth of Pseudomonas syringae pv. tomato DC3000 (Pst DC3000) and the biofilm it formed. Potent biofilm formation-inhibiting effects of hexapeptides were observed at concentrations of above 20 µM, and samples treated with hexapeptide above 100 µM reduced the ability of the bacteria to produce biofilm by 80%. 3D confocal laser scanning microscopy imaging data revealed that the antimicrobial activity of hexapeptides was enough to affect the cells embedded inside the biofilm. Finally, combination treatment with NPB and antimicrobial hexapeptides increased the antibiofilm effect compared with the effect of single processing against multilayered plant pathogen biofilms. These findings show that the combination of hexapeptides and NPB can be potentially applied for improving crop production.
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Affiliation(s)
- Bohyun Kim
- Department of Biological Science, College of Natural Sciences, Ajou University, 206, World cup-ro, Yeongtong-gu, Suwon, Gyeonggi-do 16499, Korea; (B.K.); (H.S.)
| | - Hyemi Seo
- Department of Biological Science, College of Natural Sciences, Ajou University, 206, World cup-ro, Yeongtong-gu, Suwon, Gyeonggi-do 16499, Korea; (B.K.); (H.S.)
- Center for Convergence Bioceramic Materials, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Korea; (J.H.L.); (S.K.); (W.I.C.)
| | - Jin Hyung Lee
- Center for Convergence Bioceramic Materials, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Korea; (J.H.L.); (S.K.); (W.I.C.)
| | - Sunghyun Kim
- Center for Convergence Bioceramic Materials, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Korea; (J.H.L.); (S.K.); (W.I.C.)
| | - Won Il Choi
- Center for Convergence Bioceramic Materials, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Korea; (J.H.L.); (S.K.); (W.I.C.)
| | - Daekyung Sung
- Center for Convergence Bioceramic Materials, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Korea; (J.H.L.); (S.K.); (W.I.C.)
- Correspondence: (D.S.); (E.M.); Tel.: +82-43-913-1511 (D.S.); +82-31-219-2620 (E.M.); Fax: +82-43-913-1597 (D.S.); +82-31-219-1615 (E.M.)
| | - Eunpyo Moon
- Department of Biological Science, College of Natural Sciences, Ajou University, 206, World cup-ro, Yeongtong-gu, Suwon, Gyeonggi-do 16499, Korea; (B.K.); (H.S.)
- Correspondence: (D.S.); (E.M.); Tel.: +82-43-913-1511 (D.S.); +82-31-219-2620 (E.M.); Fax: +82-43-913-1597 (D.S.); +82-31-219-1615 (E.M.)
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Na Y, Lee JS, Woo J, Ahn S, Lee E, Il Choi W, Sung D. Reactive oxygen species (ROS)-responsive ferrocene-polymer-based nanoparticles for controlled release of drugs. J Mater Chem B 2020; 8:1906-1913. [DOI: 10.1039/c9tb02533b] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Ferrocene-containing nanoparticles show reversible redox activity that could trigger drug release mediated by reactive oxygen species (ROS).
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Affiliation(s)
- Yoonhee Na
- Center for Convergence Bioceramic Materials
- Convergence R&D Division
- Korea Institute of Ceramic Engineering and Technology
- Cheongju
- Republic of Korea
| | - Jin Sil Lee
- Center for Convergence Bioceramic Materials
- Convergence R&D Division
- Korea Institute of Ceramic Engineering and Technology
- Cheongju
- Republic of Korea
| | - Jiseob Woo
- Center for Convergence Bioceramic Materials
- Convergence R&D Division
- Korea Institute of Ceramic Engineering and Technology
- Cheongju
- Republic of Korea
| | - Sukyung Ahn
- Utah-Inha DDS and Advanced Therapeutics Research Center
- Incheon
- Republic of Korea
| | - Eunhye Lee
- Utah-Inha DDS and Advanced Therapeutics Research Center
- Incheon
- Republic of Korea
| | - Won Il Choi
- Center for Convergence Bioceramic Materials
- Convergence R&D Division
- Korea Institute of Ceramic Engineering and Technology
- Cheongju
- Republic of Korea
| | - Daekyung Sung
- Center for Convergence Bioceramic Materials
- Convergence R&D Division
- Korea Institute of Ceramic Engineering and Technology
- Cheongju
- Republic of Korea
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Woo J, Park H, Na Y, Kim S, Choi WI, Lee JH, Seo H, Sung D. Novel fluorescein polymer-based nanoparticles: facile and controllable one-pot synthesis, assembly, and immobilization of biomolecules for application in a highly sensitive biosensor. RSC Adv 2020; 10:2998-3004. [PMID: 35496132 PMCID: PMC9048966 DOI: 10.1039/c9ra09106h] [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: 11/04/2019] [Accepted: 12/30/2019] [Indexed: 11/21/2022] Open
Abstract
A key aspect of biochip and biosensor preparation is optimization of the optical or electrochemical techniques that combine high sensitivity and specificity. Among them, optical techniques such as the use of fluorescent polymeric nanoparticles have resulted in dramatic progress in the field of diagnostics due to their range of advantages. We herein report a facile approach for the development of novel fluorescein polymeric nanoparticles (FPNPs) with immobilization of specific biomolecules for application in a highly sensitive optical biosensor. A series of three amphiphilic fluorescein polymers (poly(FMA-r-NAS-r-MA)), comprising hydrophobic fluorescein O-methacrylate (FMA), hydrophilic N-acryloxysuccinimide (NAS), and methacrylic acid (MA) monomers were synthesized through radical polymerization. In an aqueous environment, these fluorescein polymers self-assembled into spherical shaped nanoparticles with a well-defined particle size, narrow particle size distribution, and enhanced fluorescence properties. The bio-immobilization properties of the FPNPs were also tunable by control of the activated N-hydroxysuccinimide ester group in the polymer series. Furthermore, the fluorescence sensitivity of bovine serum albumin detection by the FPNPs indicates that the limit of detection and sensitivity were improved compared to conventional fluorescence dye-labelled proteins. These novel FPNPs therefore represent a suitable technology for disease diagnosis and biomarker detection to ultimately improve the sensitivity of existing analytical methodologies in a facile and cost-effective manner. We report a facile approach for the development of novel fluorescein polymeric nanoparticles (FPNPs) with immobilization of specific biomolecules for application in a highly sensitive optical biosensor.![]()
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Affiliation(s)
- Jiseob Woo
- Center for Convergence Bioceramic Materials
- Convergence R&D Division
- Korea Institute of Ceramic Engineering and Technology
- Cheongju
- Republic of Korea
| | - Heesun Park
- Center for Convergence Bioceramic Materials
- Convergence R&D Division
- Korea Institute of Ceramic Engineering and Technology
- Cheongju
- Republic of Korea
| | - Yoonhee Na
- Center for Convergence Bioceramic Materials
- Convergence R&D Division
- Korea Institute of Ceramic Engineering and Technology
- Cheongju
- Republic of Korea
| | - Sunghyun Kim
- Center for Convergence Bioceramic Materials
- Convergence R&D Division
- Korea Institute of Ceramic Engineering and Technology
- Cheongju
- Republic of Korea
| | - Won Il Choi
- Center for Convergence Bioceramic Materials
- Convergence R&D Division
- Korea Institute of Ceramic Engineering and Technology
- Cheongju
- Republic of Korea
| | - Jin Hyung Lee
- Center for Convergence Bioceramic Materials
- Convergence R&D Division
- Korea Institute of Ceramic Engineering and Technology
- Cheongju
- Republic of Korea
| | - Hyemi Seo
- Center for Convergence Bioceramic Materials
- Convergence R&D Division
- Korea Institute of Ceramic Engineering and Technology
- Cheongju
- Republic of Korea
| | - Daekyung Sung
- Center for Convergence Bioceramic Materials
- Convergence R&D Division
- Korea Institute of Ceramic Engineering and Technology
- Cheongju
- Republic of Korea
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Lee CY, Nam Y, Park C, Bae YJ, Choi WI. Forecasting Spring Flight of Ips subelongatus (Coleoptera: Curculionidae: Scolytinae) in Japanese larch Larix kaempferi (Pinales: Pinaceae) Forests in the Republic of Korea. Environ Entomol 2019; 48:1481-1488. [PMID: 31789365 DOI: 10.1093/ee/nvz105] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 05/06/2019] [Indexed: 06/10/2023]
Abstract
Ips subelongatus is a species of bark beetle experiencing population outbreaks in Korea. In this study, a predictive model and empirical prediction were used to forecast the spring flight of these beetles in Japanese larch forests. The number of beetles caught in pheromone traps was investigated in larch forests thinned in 2009, 2010, 2012, or 2013. Data from the sites thinned in 2009, 2010, or 2012 were used in the predictive model based on a degree-day model that was validated using data from the site thinned in 2013. The lower threshold temperature for flight (LTF) and a thermal sum for the spring flight of I. subelongatus were estimated. The empirical prediction that beetles initiate their flight when daily maximum temperatures reach 16 or 20°C was tested using daily maximum temperature and the beetles caught. The LTF was estimated as 5.97°C, with 42.95 degree-days required for initiation of spring flight. The median flight dates were estimated with a discrepancy from 1 to 3 d by the predictive model. Using the empirical prediction, differences between the day when daily maximum temperature reached 16 or 20°C and flight peak days ranged from 4 to 45 d. These results demonstrate that the predictive model is more suitable than the empirical prediction for predicting the spring flight of I. subelongatus. Overwintering I. subelongatus adults seem to need to gain a determined thermal sum before initiating spring flight rather than merely waiting for the daily maximum temperature to exceed a critical temperature.
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Affiliation(s)
- Cha Young Lee
- Division of Forest Diseases and Insect Pests, National Institute of Forest Science, Hoegi-ro, Dongdaemun-gu, Seoul, Republic of Korea
- Department of Environmental Science and Ecological Engineering, Graduate School, Korea University, Anam-ro, Seongbuk-gu, Seoul, Republic of Korea
| | - Youngwoo Nam
- Division of Forest Diseases and Insect Pests, National Institute of Forest Science, Hoegi-ro, Dongdaemun-gu, Seoul, Republic of Korea
| | - Chanwoo Park
- Division of Forest Ecology and Climate Change, National Institute of Forest Science, Hoegi-ro, Dongdaemun-gu, Seoul, Republic of Korea
| | - Yeon Jae Bae
- Department of Environmental Science and Ecological Engineering, Graduate School, Korea University, Anam-ro, Seongbuk-gu, Seoul, Republic of Korea
| | - Won Il Choi
- Division of Forest Ecology and Climate Change, National Institute of Forest Science, Hoegi-ro, Dongdaemun-gu, Seoul, Republic of Korea
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Oh H, Lee JS, Sung D, Lee JH, Moh SH, Lim JM, Choi WI. Synergistic antioxidant activity of size controllable chitosan-templated Prussian blue nanoparticle. Nanomedicine (Lond) 2019; 14:2567-2578. [PMID: 31322485 DOI: 10.2217/nnm-2019-0223] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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: 12/31/2022] Open
Abstract
Aim: Prussian blue nanoparticles (PB NPs) have been reported as excellent antioxidant agents owing to their ability to scavenge reactive oxygen species. However, their poor stability in vivo limits their use in biomedical applications. Materials & methods: In this study, we developed chitosan-templated PB NPs using water-soluble chitosan samples with molecular weights ranging from 3 to 100 kDa, which stabilized the PB NPs and improved their antioxidant activity. Results & conclusion: The chitosan-templated PB NPs coordinated with the optimal chitosan molecular weight had uniform sphere-like particles, improved stability and effective scavenging activity of in vitro reactive oxygen species generation in murine fibroblast cells stimulated by oxidative stress agents without any cytotoxicity, implying that they could be promising antioxidant agents.
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Affiliation(s)
- Hyeryeon Oh
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering & Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Republic of Korea
| | - Jin Sil Lee
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering & Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Republic of Korea
| | - Daekyung Sung
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering & Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Republic of Korea
| | - Jin Hyung Lee
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering & Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Republic of Korea
| | - Sang Hyun Moh
- Anti-aging Research Institute of BIO-FD&C Co., Ltd, A-510 Smart Valley, Incheon, 21990, Republic of Korea
| | - Jong-Min Lim
- Department of Chemical Engineering, Soonchunhyang University, Asan, Chungnam, 31538, Republic of Korea
| | - Won Il Choi
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering & Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk 28160, Republic of Korea
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Hwang HG, Choi WI, Lee B, Lee CW. Incidence and Risk Factors of Recurrent Venous Thromboembolism after Pulmonary Embolism. Tuberc Respir Dis (Seoul) 2019; 82:341-347. [PMID: 31172708 PMCID: PMC6778736 DOI: 10.4046/trd.2019.0019] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 04/21/2019] [Accepted: 05/17/2019] [Indexed: 11/24/2022] Open
Abstract
Background Information about the epidemiology of venous thromboembolism (VTE) recurrence in Korea is lacking. The purpose of this study was to investigate VTE cumulative recurrence rates and identify risk factors for VTE recurrence among Korean adults. Methods A retrospective cohort study was conducted on adult patients (≥18 years) admitted to a university teaching hospital for pulmonary embolism (PE) from 2005 to 2013. The main outcome of interest was a recurrence of VTE. We used Cox proportional hazard regression analyses to calculate the relative risk of VTE recurrence. Results Five-year cumulative incidence of recurrent VTE events was 21.5% (95% confidence interval [CI], 17.7–25.4) in all cases of PE; 17% after provoked and 27% after unprovoked PE. Multivariate analysis showed that body mass index (BMI) of ≥25 (hazard ratio [HR], 2.02; 95% CI, 1.17–3.46; p=0.01) and longer anticoagulation therapy duration (HR, 0.90; 95% CI, 0.84–0.96; p<0.01) were independently associated with risk of VTE recurrence. Risk factors not found to be statistically significant at the <0.05 level included history of VTE (HR, 1.81; 95% CI, 0.84–3.88; p=0.12), unprovoked PE (HR, 1.70; 95% CI, 0.89–3.25; p=0.10), symptomatic deep vein thrombosis (HR, 1.62; 95% CI, 0.89–2.94; p=0.10), and female sex (HR, 1.42; 95% CI, 0.78–2.55; p=0.24). We found that age, history of cancer, and other co-morbidities did not significantly affect the risk of VTE recurrence. Conclusion Recurrence of VTE after PE is high. Patients with BMI ≥25 or reduced anticoagulation therapy duration have a higher risk of recurrent VTE.
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Affiliation(s)
- Hun Gyu Hwang
- Respiratory Division, Department of Internal Medicine, Soonchunhyang University Gumi Hospital, Gumi, Korea
| | - Won Il Choi
- Department of Medicine, Keimyung University Dongsan Hospital, Daegu, Korea.
| | - Bora Lee
- Department of Biostatistic Consulting, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - Choong Won Lee
- Department of Occupational and Environmental Medicine, Sungso Hospital, Andong, Korea
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Lee CY, Nam Y, Seo YO, Bae YJ, Choi WI. Estimating Flight Distance of Platypus koryoensis (Coleoptera: Curculionidae) by Mark-Release-Recapture and Its Validation by Field Observation. J Econ Entomol 2019; 112:720-728. [PMID: 30496495 DOI: 10.1093/jee/toy355] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 06/06/2018] [Indexed: 06/09/2023]
Abstract
Korean oak wilt (KOW) is vectored by the beetle Platypus koryoensis (Murayama) (Coleoptera: Curculionidae), a native species of Korea, whose dispersal distance is a key factor determining the spread of damage by KOW. To estimate dispersal distance at stand level, we conducted a mark-release-recapture (MRR) experiment and validated its results using an independent data. Sticky traps were attached to the trunks of oak trees up to 48.8 m from the release point. Beetles were marked with different three fluorescent powders by date and released, and the number of recaptured beetles was counted 90 min after release. To validate the flight distance, annual mean dispersal distance of P. koryoensis population was analyzed using GPS coordinates of oak trees with the symptom of KOW recorded in the field from 2012 to 2014 in independent oak stands that have been damaged by KOW since 2012. The beetles were recaptured only on the day they were released, suggesting that the beetles only make one flight. The percentage of recaptured beetles was 6.0 ± 1.6%. The mean dispersal distance was 18.0 ± 1.3 m, and more than 85% of recaptured beetles were caught within 25 m. Annual movement distances in infested stands were 24.1 and 19.9 m from 2012 to 2013 and 2013 to 2014, respectively, similar to the dispersal distance obtained from our MRR experiment. Our results showed that the dispersal distance of P. koryoensis estimated by MRR is a useful process for predicting the spread of areas damaged by KOW.
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Affiliation(s)
- Cha Young Lee
- Division of Forest Insect Pests and Diseases, National Institute of Forest Science, Dongdaemun-gu, Seoul, Republic of Korea
- Department of Environmental Science and Ecological Engineering, Graduate School, Korea University, Seongbuk-gu, Seoul, Republic of Korea
| | - Youngwoo Nam
- Division of Forest Insect Pests and Diseases, National Institute of Forest Science, Dongdaemun-gu, Seoul, Republic of Korea
| | - Yeon Ok Seo
- Warm Temperate and Subtropical Forest Research Center, National Institute of Forest Science, Seogwipo-si, Jeju, Republic of Korea
| | - Yeon Jae Bae
- Department of Environmental Science and Ecological Engineering, Graduate School, Korea University, Seongbuk-gu, Seoul, Republic of Korea
| | - Won Il Choi
- Warm Temperate and Subtropical Forest Research Center, National Institute of Forest Science, Seogwipo-si, Jeju, Republic of Korea
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Lim JM, Cai T, Mandaric S, Chopra S, Han H, Jang S, Il Choi W, Langer R, Farokhzad OC, Karnik R. Drug loading augmentation in polymeric nanoparticles using a coaxial turbulent jet mixer: Yong investigator perspective. J Colloid Interface Sci 2019; 538:45-50. [PMID: 30500466 PMCID: PMC6360111 DOI: 10.1016/j.jcis.2018.11.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 11/08/2018] [Accepted: 11/09/2018] [Indexed: 11/23/2022]
Abstract
HYPOTHESIS In conventional 'bulk' nanoprecipitation, the capacity to load hydrophobic drugs into the polymeric nanoparticles (NPs) is limited to about 1%. The size distribution of the resulting NPs becomes polydisperse when higher precursor concentration is used to increase the drug loading. Hence, it should be possible to enhance the hydrophobic drug loading in polymeric NPs while maintaining the uniform NP size distribution by optimizing the nanoprecipitation process and purification process. EXPERIMENTS Systematic studies were performed to enhance the loading of docetaxel (Dtxl) by using a process of centrifugal spin-down, rapid mixing by turbulence, and addition of co-solvent. The size distributions and Dtxl loading of the NPs were measured using dynamic light scattering and HPLC, respectively. FINDINGS The centrifugal spin-down process helps to maintain uniform size distribution even at the high precursor concentration. In bulk nanoprecipitation, the resulting NPs achieved Dtxl loading up to 3.2%. By adopting turbulence for rapid mixing, the loading of Dtxl increased to 4.4%. By adding hexane as co-solvent, the loading of Dtxl further increased to 5.5%. Because of the drug loading augmentation, high degree of control, and extremely high production rate, the developed method may be useful for industrial-scale production of personalized nanomedicines by nanoprecipitation.
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Affiliation(s)
- Jong-Min Lim
- Department of Chemical Engineering, Soonchunhyang University, Asan, Chungnam 31538, Republic of Korea.
| | - Truong Cai
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Stefan Mandaric
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Sunandini Chopra
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Hyeonwoo Han
- Department of Chemical Engineering, Soonchunhyang University, Asan, Chungnam 31538, Republic of Korea
| | - Seokkyu Jang
- Department of Chemical Engineering, Soonchunhyang University, Asan, Chungnam 31538, Republic of Korea
| | - Won Il Choi
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, Cheongju, Chungbuk 28160, Republic of Korea
| | - Robert Langer
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Omid C Farokhzad
- Laboratory of Nanomedicine and Biomaterials, Department of Anesthesiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA; King Abdulaziz University, Jeddah 22254, Saudi Arabia
| | - Rohit Karnik
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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Nam H, Cho JH, Choi EY, Chang Y, Choi WI, Hwang JJ, Moon JY, Lee K, Kim SW, Kang HK, Sim YS, Park TS, Park SY, Park S. Current Status of Noninvasive Ventilation Use in Korean Intensive Care Units: A Prospective Multicenter Observational Study. Tuberc Respir Dis (Seoul) 2019; 82:242-250. [PMID: 30841017 PMCID: PMC6609522 DOI: 10.4046/trd.2018.0064] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 10/29/2018] [Accepted: 11/22/2018] [Indexed: 11/24/2022] Open
Abstract
Background Data on noninvasive ventilation (NIV) use in intensive care units (ICUs) are very limited in South Korea. Methods A prospective observational study was performed in 20 ICUs of university-affiliated hospitals from June 2017 to February 2018. Adult patients (age>18 years) who were admitted to the ICU and received NIV treatment for acute respiratory failure were included. Results A total of 156 patients treated with NIV were enrolled (mean age, 71.9±11.6 years). The most common indications for NIV were acute hypercapnic respiratory failure (AHRF, n=89) and post-extubation respiratory failure (n=44). The main device for NIV was an invasive mechanical ventilator with an NIV module (61.5%), and the majority of patients (87.2%) used an oronasal mask. After the exclusion of 32 do-not-resuscitate patients, NIV success rate was 68.5% (85/124); ICU and hospital mortality rates were 8.9% and 15.3%, respectively. However, the success rate was lower in patients with de novo respiratory failure (27.3%) compared to that of patients with AHRF (72.8%) or post-extubation respiratory failure (75.0%). In multivariate analysis, immunocompromised state, de novo respiratory failure, post-NIV (2 hours) respiratory rate, NIV mode (i.e., non-pressure support ventilation mode), and the change of NIV device were significantly associated with a lower success rate of NIV. Conclusion AHRF and post-extubation respiratory failure were the most common indications for NIV in Korean ICUs. Overall NIV success was achieved in 68.5% of patients, with the lowest rate in patients with de novo respiratory failure.
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Affiliation(s)
- Hyunseung Nam
- Department of Pulmonary, Allergy and Critical Care Medicine, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Jae Hwa Cho
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Eun Young Choi
- Department of Pulmonary and Critical Care Medicine, Yeungnam University Hospital, Daegu, Korea
| | - Youjin Chang
- Department of Pulmonary and Critical Care Medicine, Inje University Sanggye Paik Hospital, Seoul, Korea
| | - Won Il Choi
- Department of Internal Medicine, Kyeimyung University Dongsan Hospital, Daegu, Korea
| | - Jae Joon Hwang
- Department of Pulmonary and Critical Care Medicine, Kyung Hee University Hospital at Gangdong, Seoul, Korea
| | - Jae Young Moon
- Department of Pulmonary and Critical Care Medicine, Chungnam University Hospital, Daejeon, Korea
| | - Kwangha Lee
- Department of Internal Medicine, Pusan National University Hospital, Busan, Korea
| | - Sei Won Kim
- Department of Pulmonary, Critical Care and Sleep Medicine, St. Paul's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyung Koo Kang
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, Korea
| | - Yun Su Sim
- Department of Pulmonary, Allergy and Critical Care Medicine, Hallym University Kangnam Sacred Heart Hospital, Seoul, Korea
| | - Tai Sun Park
- Department of Internal Medicine, Hanyang University Guri Hospital, Guri, Korea
| | - Seung Yong Park
- Department of Pulmonary, Allergy and Critical Care Medicine, Chonbuk National University Hospital, Jeonju, Korea
| | - Sunghoon Park
- Department of Pulmonary, Allergy and Critical Care Medicine, Hallym University Sacred Heart Hospital, Anyang, Korea.
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Choi WI, Sahu A, Wurm FR, Jo SM. Magnetoliposomes with size controllable insertion of magnetic nanoparticles for efficient targeting of cancer cells. RSC Adv 2019; 9:15053-15060. [PMID: 35516322 PMCID: PMC9064235 DOI: 10.1039/c9ra02529d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 04/03/2019] [Accepted: 05/04/2019] [Indexed: 01/25/2023] Open
Abstract
Liposomes with embedded magnetic nanoparticles (magnetoliposomes; MLs) are promising nano-platforms for various biomedical applications. The magnetic behavior of MLs depends on the size of embedded magnetic nanoparticles (MNPs); in general, larger MNPs are more advantageous (e.g. increased magnetic signals). However, the insertion of large MNPs into liposome bilayers is constrained by the thickness of the membrane (∼3.4 nm); thus, the incorporation of larger magnetic nanoparticles (>3.4 nm) into liposomes is a major challenge. We developed a solvent-guided approach for the simple and efficient insertion of large MNPs (6 nm or 15 nm) into the liposomal bilayer. MLs with 6 nm MNPs were used for the magnetic field-guided separation of cancer cells by targeting to human epidermal receptor 2 and folate receptor. We also evaluated the nuclear delivery of oligonucleotides by MLs with a cationic lipid formula. The MLs are expected to be versatile nano-platforms for biomedical applications (e.g. disease diagnosis, therapeutics and cell tracking). Cationic magnetoliposomes enable to achieve efficient capture of cells and intracellular delivery of oligonucleotides into nucleus through cancer cell-specific targeting.![]()
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Affiliation(s)
- Won Il Choi
- Center for Convergence Bioceramic Materials
- Convergence R&D Division
- Korea Institute of Ceramic Engineering and Technology
- Cheongju
- Republic of Korea
| | - Abhishek Sahu
- School of Materials Science and Engineering
- Gwangju Institute of Science and Technology
- Gwangju 61005
- Republic of Korea
| | | | - Seong-Min Jo
- Max Planck Institute for Polymer Research
- D-55128 Mainz
- Germany
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Sahu A, Hwang Y, Vilos C, Lim JM, Kim S, Choi WI, Tae G. A novel alendronate functionalized nanoprobe for simple colorimetric detection of cancer-associated hypercalcemia. Nanoscale 2018; 10:13375-13383. [PMID: 29786742 DOI: 10.1039/c8nr02570c] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The calcium (Ca2+) ion concentration in the blood serum is tightly regulated, and any abnormalities in the level of serum calcium ions are associated with many potentially dangerous diseases. Thus, monitoring of the Ca2+ ion concentration in the blood serum is of fundamental importance. Gold nanoparticle (GNP)-based colorimetric biosensors have enormous potential in clinical diagnostic applications due to their simplicity, versatility, and unique optical properties. In this study, we have developed an alendronate functionalized gold nanoparticle (GNP-ALD) system for the measurement of Ca2+ ion concentration in biological samples. The GNP-ALD system showed higher sensitivity towards the Ca2+ ion compared to adenosine diphosphate (ADP) or adenosine triphosphate (ATP). The strong interaction between the Ca2+ ion and ALD at the GNP/solution interface resulted in significant aggregation of the ALD conjugated GNPs, and induced a color change of the solution from red to blue, which could be visually observed with the naked eye. The interaction between the Ca2+ ion and GNP-ALD was characterized by UV-visible spectroscopy, transmission electron microscopy (TEM) imaging, and dynamic light scattering (DLS) analysis. Under the optimized conditions, the lower limit of Ca2+ ion detection using this method was found to be 25 μM and a linear response range from 25 μM to 300 μM Ca2+ ions was obtained with excellent discrimination against other metal ions. The GNP-ALD nanoprobe could successfully determine the ionized Ca2+ concentration in various serum samples and the results were validated using a commercial calcium assay kit. Moreover, as a practical application, we demonstrated the utility of this nanoprobe for the detection of cancer-associated hypercalcemia in a mouse model.
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Affiliation(s)
- Abhishek Sahu
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan Gwagi-ro, Oryong dong, Buk-gu, Gwangju 61005, Republic of Korea.
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Affiliation(s)
- Abhishek Sahu
- School of Materials Science and Engineering; Gwangju Institute of Science and Technology; 123 Cheomdan-gwagiro, Buk-gu Gwangju 61005 Republic of Korea
| | - Won Il Choi
- Center for Convergence Bioceramic Materials; Convergence R&D Division; Korea Institute of Ceramic Engineering and Technology; 202 Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu Cheongju Chungbuk 28160 Republic of Korea
| | - Giyoong Tae
- School of Materials Science and Engineering; Gwangju Institute of Science and Technology; 123 Cheomdan-gwagiro, Buk-gu Gwangju 61005 Republic of Korea
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Park J, Kim EK, Kim MA, Kim TH, Chang JH, Ryu YJ, Lee SW, Oh YM, Yong SJ, Choi WI, Yoo KH, Lee JH. Increased Risk of Exacerbation in Asthma Predominant Asthma-Chronic Obstructive Pulmonary Disease Overlap Syndrome. Tuberc Respir Dis (Seoul) 2018. [PMID: 29527840 PMCID: PMC6148093 DOI: 10.4046/trd.2017.0064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background Obstructive airway disease patients with increased variability of airflow and incompletely reversible airflow obstruction are often categorized as having asthma–chronic obstructive pulmonary disease (COPD) overlap syndrome (ACOS). ACOS is heterogeneous with two sub-phenotypes: asthma-ACOS and COPD-ACOS. The objective of this study was to determine the difference in risk of exacerbation between the two sub-phenotypes of ACOS. Methods A total of 223 patients exhibiting incompletely reversible airflow obstruction with increased variability (spirometrically defined ACOS) were enrolled. These patients were divided into asthma-ACOS and COPD-ACOS according to their physician's diagnosis and smoking history of 10 pack-years. Within-group comparisons were made for asthma-ACOS versus COPD-ACOS and light smokers versus heavy smokers. Results Compared to patients with COPD-ACOS, patients with asthma-ACOS experienced exacerbation more often despite their younger age, history of light smoking, and better lung function. While the light-smoking group showed better lung function, they made unscheduled outpatient clinic visits more frequently. On multivariate analysis, asthma-ACOS and poor inhaler compliance were significantly associated with more than two unscheduled clinic visits during the previous year. Conclusion Spirometrically defined ACOS includes heterogeneous subgroups with different clinical features. Phenotyping of ACOS by physician's diagnosis could be significant in predicting future risk of exacerbation.
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Affiliation(s)
- Jisoo Park
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - Eun Kyung Kim
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - Mi Ae Kim
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - Tae Hyung Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Hanyang University Guri Hospital, Guri, Korea
| | - Jung Hyun Chang
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Ewha Womans University College of Medicine, Seoul, Korea
| | - Yon Ju Ryu
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Ewha Womans University College of Medicine, Seoul, Korea
| | - Sei Won Lee
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Yeon Mok Oh
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Suk Joong Yong
- Department of Internal Medicine, Wonju Severance Christian Hospital, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Won Il Choi
- Department of Internal Medicine, Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea
| | - Kwang Ha Yoo
- Department of Pulmonary and Critical Care Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - Ji Hyun Lee
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam, Korea.
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Choi WI, Hwang Y, Sahu A, Min K, Sung D, Tae G, Chang JH. An injectable and physical levan-based hydrogel as a dermal filler for soft tissue augmentation. Biomater Sci 2018; 6:2627-2638. [DOI: 10.1039/c8bm00524a] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A novel levan-based injectable hydrogel was developed as a dermal filler having better in vivo stability and efficacy compared to HA-based hydrogel.
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Affiliation(s)
- Won Il Choi
- Center for Convergence Bioceramic Materials
- Convergence R&D Division
- Korea Institute of Ceramic Engineering and Technology
- Republic of Korea
| | - Youngmin Hwang
- School of Materials Science and Engineering
- Gwangju Institute of Science and Technology
- Gwangju 61005
- Republic of Korea
| | - Abhishek Sahu
- School of Materials Science and Engineering
- Gwangju Institute of Science and Technology
- Gwangju 61005
- Republic of Korea
| | - Kiyoon Min
- School of Materials Science and Engineering
- Gwangju Institute of Science and Technology
- Gwangju 61005
- Republic of Korea
| | - Daekyung Sung
- Center for Convergence Bioceramic Materials
- Convergence R&D Division
- Korea Institute of Ceramic Engineering and Technology
- Republic of Korea
| | - Giyoong Tae
- School of Materials Science and Engineering
- Gwangju Institute of Science and Technology
- Gwangju 61005
- Republic of Korea
| | - Jeong Ho Chang
- Center for Convergence Bioceramic Materials
- Convergence R&D Division
- Korea Institute of Ceramic Engineering and Technology
- Republic of Korea
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Bang J, Park H, Choi WI, Sung D, Lee JH, Lee KY, Kim S. Sensitive detection of dengue virus NS1 by highly stable affibody-functionalized gold nanoparticles. NEW J CHEM 2018. [DOI: 10.1039/c8nj02244e] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The anti-NS1 affibody-functionalized gold nanoparticles based ELISA resulted in a 14.2-fold signal amplification performance for dengue NS1 detection.
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Affiliation(s)
- Jinho Bang
- Korea Institute of Ceramic Engineering and Technology
- Center for Convergence Bioceramic Materials
- Cheongjusi
- South Korea
- Department of Bioengineering
| | - Heesun Park
- Korea Institute of Ceramic Engineering and Technology
- Center for Convergence Bioceramic Materials
- Cheongjusi
- South Korea
| | - Won Il Choi
- Korea Institute of Ceramic Engineering and Technology
- Center for Convergence Bioceramic Materials
- Cheongjusi
- South Korea
| | - Daekyung Sung
- Korea Institute of Ceramic Engineering and Technology
- Center for Convergence Bioceramic Materials
- Cheongjusi
- South Korea
| | - Jin Hyung Lee
- Korea Institute of Ceramic Engineering and Technology
- Center for Convergence Bioceramic Materials
- Cheongjusi
- South Korea
| | - Kuen Yong Lee
- Department of Bioengineering
- Hanyang University
- Seoul
- South Korea
| | - Sunghyun Kim
- Korea Institute of Ceramic Engineering and Technology
- Center for Convergence Bioceramic Materials
- Cheongjusi
- South Korea
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Choi WI, Sahu A, Vilos C, Kamaly N, Jo SM, Lee JH, Tae G. Bioinspired Heparin Nanosponge Prepared by Photo-crosslinking for Controlled Release of Growth Factors. Sci Rep 2017; 7:14351. [PMID: 29084990 PMCID: PMC5662564 DOI: 10.1038/s41598-017-14040-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [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: 06/05/2017] [Accepted: 10/03/2017] [Indexed: 12/02/2022] Open
Abstract
Growth factors have great therapeutic potential for various disease therapy and tissue engineering applications. However, their clinical efficacy is hampered by low bioavailability, rapid degradation in vivo and non-specific biodistribution. Nanoparticle based delivery systems are being evaluated to overcome these limitations. Herein, we have developed a thermosensitive heparin nanosponge (Hep-NS) by a one step photopolymerization reaction between diacrylated pluronic and thiolated heparin molecules. The amount of heparin in Hep-NS was precisely controlled by varying the heparin amount in the reaction feed. Hep-NS with varying amounts of heparin showed similar size and shape properties, though surface charge decreased with an increase in the amount of heparin conjugation. The anticoagulant activity of the Hep-NS decreased by 65% compared to free heparin, however the Hep-NS retained their growth factor binding ability. Four different growth factors, bFGF, VEGF, BMP-2, and HGF were successfully encapsulated into Hep-NS. In vitro studies showed sustained release of all the growth factors for almost 60 days and the rate of release was directly dependent on the amount of heparin in Hep-NS. The released growth factors retained their bioactivity as assessed by a cell proliferation assay. This heparin nanosponge is therefore a promising nanocarrier for the loading and controlled release of growth factors.
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Affiliation(s)
- Won Il Choi
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 28160, Republic of Korea.
| | - Abhishek Sahu
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju, 61005, Republic of Korea
| | - Cristian Vilos
- Universidad Andres Bello, Laboratory of Nanomedicine and Targeted Delivery, Center for Integrative Medicine and Innovative Science, Faculty of Medicine, Center for Bioinformatics and Integrative Biology, Faculty of Biological Sciences, Santiago, 8370071, Chile.,Center for the Development of Nanoscience and Nanotechnology, CEDENNA, 9170124, Santiago, Chile
| | - Nazila Kamaly
- Technical University of Denmark, Department of Micro and Nanotechnology, DTU Nanotech, Bioinspired Nanomaterials Lab, 2800, Kgs, Lyngby, Denmark
| | - Seong-Min Jo
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Jin Hyung Lee
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 28160, Republic of Korea
| | - Giyoong Tae
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju, 61005, Republic of Korea.
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Choi WI, Ryu HJ, Kim SJ, Oh KK. Thermo-mechanical fractionation of yellow poplar sawdust with a low reaction severity using continuous twin screw-driven reactor for high hemicellulosic sugar recovery. Bioresour Technol 2017; 241:63-69. [PMID: 28550774 DOI: 10.1016/j.biortech.2017.05.089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 03/30/2017] [Revised: 05/14/2017] [Accepted: 05/15/2017] [Indexed: 06/07/2023]
Abstract
Yellow poplar sawdust (YPS), a wood waste that can be easily collected from a local furniture factory, was fractionated using continuous twin screw-driven reactor for high hemicellulosic sugar recovery. The highest total sugar yields were attained under the following conditions: a barrel temperature of 127°C, sulfuric acid concentration of 0.8wt%, liquid feeding rate of 25mL/min, solid feeding rate of 2.0g/min, screw rotation speed of 25rpm, and residence time of 14.5min. The glucan and hemicellulose contents of the CTSR-fractionated YPS were 47.8% and 10.4%, respectively, and these results indicated that 44.9% of cellulose and 76.3% of the hemicellulose were extracted into liquid hydrolyzate. Meanwhile, the batch fractionation of YPS at the same reaction conditions showed a little fractionation effect, i.e., only 20.5% of hemicellulosic sugar yield was obtained.
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Affiliation(s)
- Won Il Choi
- R&D Center, SugarEn Co., Ltd., Yongin, Gyeonggi 16890, Republic of Korea
| | - Hyun Jin Ryu
- R&D Center, SugarEn Co., Ltd., Yongin, Gyeonggi 16890, Republic of Korea
| | - Seong Ju Kim
- R&D Center, SugarEn Co., Ltd., Yongin, Gyeonggi 16890, Republic of Korea; Department of Biomolecular and Chemical Engineering, Hankyong National University, Anseong, Gyeonggi 17579, Republic of Korea
| | - Kyeong Keun Oh
- Department of Chemical Engineering, Dankook University, Yongin, Gyeonggi 16890, Republic of Korea.
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Yu M, Amengual J, Menon A, Kamaly N, Zhou F, Xu X, Saw PE, Lee S, Si K, Ortega CA, Choi WI, Lee I, Bdour Y, Shi J, Mahmoudi M, Jon S, Fisher EA, Farokhzad OC. Targeted Nanotherapeutics Encapsulating Liver X Receptor Agonist GW3965 Enhance Antiatherogenic Effects without Adverse Effects on Hepatic Lipid Metabolism in Ldlr -/- Mice. Adv Healthc Mater 2017; 6. [PMID: 28730752 DOI: 10.1002/adhm.201700313] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [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: 03/10/2017] [Revised: 04/27/2017] [Indexed: 11/11/2022]
Abstract
The pharmacological manipulation of liver X receptors (LXRs) has been an attractive therapeutic strategy for atherosclerosis treatment as they control reverse cholesterol transport and inflammatory response. This study presents the development and efficacy of nanoparticles (NPs) incorporating the synthetic LXR agonist GW3965 (GW) in targeting atherosclerotic lesions. Collagen IV (Col IV) targeting ligands are employed to functionalize the NPs to improve targeting to the atherosclerotic plaque, and formulation parameters such as the length of the polyethylene glycol (PEG) coating molecules are systematically optimized. In vitro studies indicate that the GW-encapsulated NPs upregulate the LXR target genes and downregulate proinflammatory mediator in macrophages. The Col IV-targeted NPs encapsulating GW (Col IV-GW-NPs) successfully reaches atherosclerotic lesions when administered for 5 weeks to mice with preexisting lesions, substantially reducing macrophage content (≈30%) compared to the PBS group, which is with greater efficacy versus nontargeting NPs encapsulating GW (GW-NPs) (≈18%). In addition, mice administered the Col IV-GW-NPs do not demonstrate increased hepatic lipid biosynthesis or hyperlipidemia during the treatment period, unlike mice injected with the free GW. These findings suggest a new form of LXR-based therapeutics capable of enhanced delivery of the LXR agonist to atherosclerotic lesions without altering hepatic lipid metabolism.
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Affiliation(s)
- Mikyung Yu
- Center for Nanomedicine and Department of Anesthesiology Brigham and Women's Hospital Harvard Medical School Boston MA 02115 USA
| | - Jaume Amengual
- Division of Cardiology Department of Medicine Marc and Ruti Bell Program in Vascular Biology New York University School of Medicine New York NY 10016 USA
| | - Arjun Menon
- Division of Cardiology Department of Medicine Marc and Ruti Bell Program in Vascular Biology New York University School of Medicine New York NY 10016 USA
| | - Nazila Kamaly
- Center for Nanomedicine and Department of Anesthesiology Brigham and Women's Hospital Harvard Medical School Boston MA 02115 USA
- Department of Micro and Nanotechnology Technical University of Denmark DTU Nanotech 2800 Kgs. Lyngby Denmark
| | - Felix Zhou
- Division of Cardiology Department of Medicine Marc and Ruti Bell Program in Vascular Biology New York University School of Medicine New York NY 10016 USA
| | - Xiaoding Xu
- Center for Nanomedicine and Department of Anesthesiology Brigham and Women's Hospital Harvard Medical School Boston MA 02115 USA
| | - Phei Er Saw
- Center for Nanomedicine and Department of Anesthesiology Brigham and Women's Hospital Harvard Medical School Boston MA 02115 USA
| | - Seung‐Joo Lee
- Department of Biological Chemistry and Molecular Pharmacology Harvard Medical School 240 Longwood Ave. Boston MA 02115 USA
| | - Kevin Si
- Center for Nanomedicine and Department of Anesthesiology Brigham and Women's Hospital Harvard Medical School Boston MA 02115 USA
| | - Carleena Angelica Ortega
- Center for Nanomedicine and Department of Anesthesiology Brigham and Women's Hospital Harvard Medical School Boston MA 02115 USA
| | - Won Il Choi
- Center for Nanomedicine and Department of Anesthesiology Brigham and Women's Hospital Harvard Medical School Boston MA 02115 USA
- Center for Convergence Bioceramic Materials Convergence R&D Division Korea Institute of Ceramic Engineering and Technology 202, Osongsaengmyeong 1‐ro, Osong‐eup Heungdeok‐guCheongju Chungbuk 28160 Republic of Korea
| | - In‐Hyun Lee
- Center for Nanomedicine and Department of Anesthesiology Brigham and Women's Hospital Harvard Medical School Boston MA 02115 USA
| | - Yazan Bdour
- Center for Nanomedicine and Department of Anesthesiology Brigham and Women's Hospital Harvard Medical School Boston MA 02115 USA
| | - Jinjun Shi
- Center for Nanomedicine and Department of Anesthesiology Brigham and Women's Hospital Harvard Medical School Boston MA 02115 USA
| | - Morteza Mahmoudi
- Center for Nanomedicine and Department of Anesthesiology Brigham and Women's Hospital Harvard Medical School Boston MA 02115 USA
| | - Sangyong Jon
- KAIST Institute for the BioCentury Department of Biological Sciences Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak‐ro Daejeon 34141 Republic of Korea
| | - Edward A. Fisher
- Division of Cardiology Department of Medicine Marc and Ruti Bell Program in Vascular Biology New York University School of Medicine New York NY 10016 USA
| | - Omid C. Farokhzad
- Center for Nanomedicine and Department of Anesthesiology Brigham and Women's Hospital Harvard Medical School Boston MA 02115 USA
- College of Pharmacy King Abdulaziz University Jeddah 21589 Saudi Arabia
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Choi WI, Jeon MJ, Park YS. Structural dynamics in the host-parasitoid system of the pine needle gall midge ( Thecodiplosis japonensis) during invasion. PeerJ 2017; 5:e3610. [PMID: 28848688 PMCID: PMC5571814 DOI: 10.7717/peerj.3610] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 07/03/2017] [Indexed: 11/20/2022] Open
Abstract
The structural dynamics of host–parasitoid populations play a key role in the mechanism of natural community development with invasive species. Species invading new habitats experience coevolution with their newly acquired natural enemies, and their population dynamics are driven by a complex interaction between biological and environmental factors. We examined the biological and environmental factors which potentially influence a community of parasitoids throughout the 25-year invasion history of the pine needle gall midge (PNGM), Thecodiplosis japonensis, an important pest of pines in eastern Asia. We found that differences in establishment sequence and competitive ability among the parasitoids attacking this species determined the parasitoid community’s structure and dynamics. In particular, the timing for the initial establishment of the host–parasitoid association, incomplete superiority in competition among parasitoids, and indirect competition by a combination of the parasitoids were important factors for determining community’s structure and dynamics. Finally, the history of change in the community composition could be explained by the phenology differences in its member species, mediated by environmental factors.
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Affiliation(s)
- Won Il Choi
- Division of Forest Insect Pests and Diseases, National Institute of Forest Science, Seoul, Republic of Korea
| | - Mun-Jang Jeon
- Department of Forest Resources, Daegu University, Gyeongsan, Republic of Korea
| | - Young-Seuk Park
- Department of Biology, Kyung Hee University, Seoul, Republic of Korea.,Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, Seoul, Republic of Korea
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Kim D, Jeon H, Ahn S, Choi WI, Kim S, Jon S. An approach for half-life extension and activity preservation of an anti-diabetic peptide drug based on genetic fusion with an albumin-binding aptide. J Control Release 2017; 256:114-120. [DOI: 10.1016/j.jconrel.2017.04.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 04/19/2017] [Accepted: 04/25/2017] [Indexed: 10/19/2022]
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