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Seong HJ, Kim H, Ko YJ, Yao Z, Baek SB, Kim NJ, Jang YS. Enhancing polyethylene degradation: a novel bioprocess approach using Acinetobacter nosocomialis pseudo-resting cells. Appl Microbiol Biotechnol 2024; 108:86. [PMID: 38189951 DOI: 10.1007/s00253-023-12930-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 10/10/2023] [Accepted: 10/20/2023] [Indexed: 01/09/2024]
Abstract
Despite the discovery of several bacteria capable of interacting with polymers, the activity of the natural bacterial isolates is limited. Furthermore, there is a lack of knowledge regarding the development of bioprocesses for polyethylene (PE) degradation. Here, we report a bioprocess using pseudo-resting cells for efficient degradation of PE. The bacterial strain Acinetobacter nosocomialis was isolated from PE-containing landfills and characterized using low-density PE (LDPE) surface oxidation when incubated with LDPE. We optimized culture conditions to generate catalytic pseudo-resting cells of A. nosocomialis that are capable of degrading LDPE films in a bioreactor. After 28 days of bioreactor operation using pseudo-resting cells of A. nosocomialis, we observed the formation of holes on the PE film (39 holes per 217 cm2, a maximum diameter of 1440 μm). This study highlights the potential of bacteria as biocatalysts for the development of PE degradation processes. KEY POINTS: • New bioprocess has been proposed to degrade polyethylene (PE). • Process with pseudo-resting cells results in the formation of holes in PE film. • We demonstrated PE degradation using A. nosocomialis as a biocatalyst.
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Affiliation(s)
- Hyeon Jeong Seong
- Division of Applied Life Science (BK21 Four), Department of Applied Life Chemistry, Institute of Agriculture & Life Science (IALS), Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Hyejin Kim
- Division of Applied Life Science (BK21 Four), Department of Applied Life Chemistry, Institute of Agriculture & Life Science (IALS), Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Young-Joon Ko
- Department of Agricultural Biology, National Institute of Agriculture Sciences, Rural Development Administration, Wanju, 54875, Republic of Korea
| | - Zhuang Yao
- Division of Applied Life Science (BK21 Four), Department of Applied Life Chemistry, Institute of Agriculture & Life Science (IALS), Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Song-Bum Baek
- Transportation and Environment Bureau, Jinju City Hall, Jinju, 52789, Republic of Korea
| | - Nam-Jung Kim
- Department of Agricultural Biology, National Institute of Agriculture Sciences, Rural Development Administration, Wanju, 54875, Republic of Korea.
| | - Yu-Sin Jang
- Division of Applied Life Science (BK21 Four), Department of Applied Life Chemistry, Institute of Agriculture & Life Science (IALS), Gyeongsang National University, Jinju, 52828, Republic of Korea.
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2
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Lee JH, Lee JE, Son SE, Son SH, Kim NJ, Im DS. NJK14047 inhibition of p38 MAPK ameliorates inflammatory immune diseases by suppressing T cell differentiation. Int Immunopharmacol 2024; 130:111800. [PMID: 38447416 DOI: 10.1016/j.intimp.2024.111800] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 02/19/2024] [Accepted: 03/02/2024] [Indexed: 03/08/2024]
Abstract
p38 MAPK has been implicated in the pathogenesis of rheumatoid arthritis and psoriasis. To assess the therapeutic efficacy of the p38 MAPK inhibitor NJK14047 in the treatment of rheumatoid arthritis and psoriasis, we developed mouse models of collagen-induced rheumatoid arthritis (CIA) and imiquimod-induced psoriasis (IIP). NJK14047 was found to suppress arthritis development and psoriasis symptoms and also suppressed histopathological changes induced by CIA and IIP. Furthermore, we established that CIA and IIP evoked increases in the mRNA expression levels of Th1/Th17 inflammatory cytokines in the joints and skin, which was again suppressed by NJK14047. NJK14047 reversed the enlargement of spleens induced by CIA and IIP as well as increases in the levels of inflammatory cytokine in spleens following induction by CIA and IIP. In human SW982 synovial cells, NJK14047 was found to suppress lipopolysaccharide-induced increases in the mRNA expression of proinflammatory cytokines. NJK14047 inhibition of p38 MAPK suppressed the differentiation of naïve T cells to Th17 and Th1 cells. Our findings in this study provide convincing evidence indicating the therapeutic efficacy of the p38 MAPK inhibitor NJK14047 against CIA and IIP, which we speculate could be associated with the suppression on T-cell differentiation.
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Affiliation(s)
- Ju-Hyun Lee
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02446, Republic of Korea
| | - Jung-Eun Lee
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02446, Republic of Korea
| | - So-Eun Son
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02446, Republic of Korea
| | - Seung-Hwan Son
- Department of Basic Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02446, Republic of Korea
| | - Nam-Jung Kim
- Department of Basic Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02446, Republic of Korea
| | - Dong-Soon Im
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02446, Republic of Korea; Department of Basic Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02446, Republic of Korea.
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3
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Yeon NR, Cho JS, Yoo HS, Jeon SH, Yi CM, Jung MJ, Lee YS, Shin EB, Kim N, Kim H, Seong J, Kim NJ, Lee JK, Inn KS. Dextran sodium sulfate (DSS)-induced colitis is alleviated in mice after administration of flavone-derived NRF2-activating molecules. Life Sci 2024; 340:122424. [PMID: 38242497 DOI: 10.1016/j.lfs.2024.122424] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 12/29/2023] [Accepted: 01/10/2024] [Indexed: 01/21/2024]
Abstract
Inflammatory Bowel Disease (IBD) is a chronic and relapsing inflammatory condition characterized by severe symptoms such as diarrhea, fatigue, and weight loss. Growing evidence underscores the direct involvement of the nuclear factor-erythroid 2-related factor 2 (NRF2) in the development and progression of IBD, along with its associated complications, including colorectal cancer. The NRF2 pathway plays a crucial role in cellular responses to oxidative stress, and dysregulation of this pathway has been implicated in IBD. Flavones, a significant subclass of flavonoids, have shown pharmacological impacts in various diseases including IBD, through the NRF2 signaling pathway. In this study, we conducted a screening of compounds with a flavone structure and identified NJK15003 as a promising NRF2 activator. NJK15003 demonstrated potent NRF2 activation, as evidenced by the upregulation of downstream proteins, promoter activation, and NRF2 nuclear translocation in IBD cellular models. Treatment with NJK15003 effectively restored the protein levels of tight junctions in cells treated with dextran sodium sulfate (DSS) and in DSS-treated mice, suggesting its potential to protect cells from barrier integrity disruption in IBD. In DSS-treated mice, the administration of NJK15003 resulted in the prevention of body weight loss, a reduction in colon length shortening, and a decrease in the disease activity index. Furthermore, NJK15003 treatment substantially alleviated inflammatory responses and apoptotic cell death in the colon of DSS-treated mice. Taken together, this study proposes the potential utility of NRF2-activating flavone compounds, exemplified by NJK15003, for the treatment of IBD.
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Affiliation(s)
- Nu-Ri Yeon
- Department of Biomedical and Pharmaceutical Science, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Jae Seok Cho
- Department of Fundamental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Hyung-Seok Yoo
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Seung Ho Jeon
- Department of Fundamental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Chae-Min Yi
- Department of Fundamental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Min-Ji Jung
- Department of Fundamental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Yun-Seok Lee
- Department of Fundamental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Eun-Bin Shin
- Department of Fundamental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Namkwon Kim
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Heejung Kim
- Department of Pharmacology, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul 03080, Republic of Korea
| | - Jihye Seong
- Department of Pharmacology, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul 03080, Republic of Korea
| | - Nam-Jung Kim
- Department of Fundamental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea; Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea.
| | - Jong Kil Lee
- Department of Fundamental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea; Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea.
| | - Kyung-Soo Inn
- Department of Fundamental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea.
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4
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Yoo HS, Shin JW, Jang YH, Yang YS, Son SH, Won HJ, Kim SL, Sim J, Kim NJ. Synthesis of 2,3-Benzotropones via Palladium(II)-Catalyzed Aerobic Dehydrogenation from 1-Benzosuberones and Sequential Diels-Alder Reaction to Yield Benzobicyclo[3.2.2]nonenones. J Org Chem 2024; 89:3102-3110. [PMID: 38364274 DOI: 10.1021/acs.joc.3c02558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
An approach to 2,3-benzotropone from 1-benzosuberone via palladium(II)-catalyzed aerobic dehydrogenation was developed. This method first provided a catalytic route to various 2,3-benzotropones from their corresponding 1-benzosuberones in good yields. In addition, the reaction could be applied to a one-pot Diels-Alder reaction with maleimide, providing a complex benzobicyclo[3.2.2]nonenone in ≤90% yield. Kinetic analysis supporting our proposed mechanism was also performed, underscoring the robustness of the developed synthetic pathway.
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Affiliation(s)
- Hyung-Seok Yoo
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Jeong-Won Shin
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Yoon Hu Jang
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Yo-Sep Yang
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Seung Hwan Son
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Hyuck-Jae Won
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Soo Lim Kim
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Jaehoon Sim
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Nam-Jung Kim
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
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5
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Yang H, Kang M, Jang S, Baek SY, Kim J, Kim GU, Kim D, Ha J, Kim JS, Jung C, Kim NJ, Cho SY, Shin WH, Lee J, Ko J, Lee A, Keum G, Lee S, Kang T. Discovery of thiophen-2-ylmethylene bis-dimedone derivatives as novel WRN inhibitors for treating cancers with microsatellite instability. Bioorg Med Chem 2024; 100:117588. [PMID: 38295487 DOI: 10.1016/j.bmc.2024.117588] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 11/23/2023] [Accepted: 01/08/2024] [Indexed: 02/02/2024]
Abstract
Microsatellite instability (MSI) is a hypermutable condition caused by DNA mismatch repair system defects, contributing to the development of various cancer types. Recent research has identified Werner syndrome ATP-dependent helicase (WRN) as a promising synthetic lethal target for MSI cancers. Herein, we report the first discovery of thiophen-2-ylmethylene bis-dimedone derivatives as novel WRN inhibitors for MSI cancer therapy. Initial computational analysis and biological evaluation identified a new scaffold for a WRN inhibitor. Subsequent SAR study led to the discovery of a highly potent WRN inhibitor. Furthermore, we demonstrated that the optimal compound induced DNA damage and apoptotic cell death in MSI cancer cells by inhibiting WRN. This study provides a new pharmacophore for WRN inhibitors, emphasizing their therapeutic potential for MSI cancers.
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Affiliation(s)
- Hwasun Yang
- Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea; Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Miso Kang
- Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea; Department of Fundamental Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Seonyeong Jang
- Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea; Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Soo Yeon Baek
- Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Jiwon Kim
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Gyeong Un Kim
- Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea; Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology, Seoul 02792, Republic of Korea
| | - Dongwoo Kim
- College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea
| | - Junsu Ha
- Arontier Co., Ltd., Seoul 06735, Republic of Korea
| | - Jong Seung Kim
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Cheulhee Jung
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Nam-Jung Kim
- Department of Fundamental Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Sung-Yup Cho
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Republic of Korea; Medical Research Center, Genomic Medicine Institute, Seoul National University College of Medicine, Seoul 03080, Republic of Korea; Cancer Research Institute, Seoul National University, Seoul 03080, Republic of Korea
| | - Woong-Hee Shin
- Arontier Co., Ltd., Seoul 06735, Republic of Korea; Department of Medicine, Korea University College of Medicine, Seoul 02708, Republic of Korea
| | - Juyong Lee
- Arontier Co., Ltd., Seoul 06735, Republic of Korea; Research Institute of Pharmaceutical Science, Seoul National University, Seoul 08826, Republic of Korea; Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul 08826, Republic of Korea
| | - Junsu Ko
- Arontier Co., Ltd., Seoul 06735, Republic of Korea
| | - Ansoo Lee
- Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea; Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology, Seoul 02792, Republic of Korea
| | - Gyochang Keum
- Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea; Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology, Seoul 02792, Republic of Korea
| | - Sanghee Lee
- Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea; Department for HY-KIST Bio-convergence, Hanyang University, Seoul 04763, Republic of Korea.
| | - Taek Kang
- Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.
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6
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Park JH, Kim TS, Jo HJ, Lee CM, Lee M, Kang CK, Choe PG, Park WB, Kim NJ. Reduction of blood culture contamination rates through simplified personal protective equipment in COVID-19 patient care setting. J Hosp Infect 2024:S0195-6701(24)00033-1. [PMID: 38309667 DOI: 10.1016/j.jhin.2024.01.011] [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] [Received: 01/28/2024] [Accepted: 01/29/2024] [Indexed: 02/05/2024]
Affiliation(s)
- J H Park
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - T S Kim
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul, Republic of Korea; Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - H J Jo
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - C M Lee
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - M Lee
- Infection Control Office, Seoul National University Hospital, Seoul, Republic of Korea
| | - C K Kang
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - P G Choe
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Infection Control Office, Seoul National University Hospital, Seoul, Republic of Korea.
| | - W B Park
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - N J Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Infection Control Office, Seoul National University Hospital, Seoul, Republic of Korea
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7
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Cho Y, Kang M, Ji SH, Jeong HJ, Jung JE, Oh DH, Park S, Park YY, Choi J, Kim S, Kim NJ, Lee DH, Park CS, Han SJ, Lee S, Choi J. Discovery of Orally Bioavailable Phthalazinone Analogues as an ENPP1 Inhibitor for STING-Mediated Cancer Immunotherapy. J Med Chem 2023; 66:15141-15170. [PMID: 37963811 DOI: 10.1021/acs.jmedchem.3c01061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
A lack of the T cell-inflamed tumor microenvironment limits the efficacy of immune checkpoint inhibitors (ICIs). Activation of stimulator of interferon genes (STING)-mediated innate immunity has emerged as a novel therapeutic approach in cancer therapy. 2',3'-Cyclic GMP-AMP (cGAMP) is a natural STING agonist; however, cGAMP is subjected to endogenous degradation by ecto-nucleotide pyrophosphatase phosphodiesterase 1 (ENPP1). To improve the ICI response rate, we developed 29f, a novel ENPP1 inhibitor with phthalazin-1(2H)-one as the core scaffold. 29f inhibited the cGAMP hydrolysis by ENPP1 in vitro (IC50 = 68 nM) and enhanced the STING-mediated type I interferon response in both immune and tumor cells. 29f demonstrated excellent metabolic stability and bioavailability (F = 65%). Orally administered 29f promoted tumor growth inhibition in a CT26 syngeneic model and increased the anti-PD-L1 response. Furthermore, 29f-induced immunological memory prevented the tumor relapse against tumor rechallenge, suggesting the promising therapeutic potential of 29f.
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Affiliation(s)
- Yeonguk Cho
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea
| | - Miso Kang
- Department of Fundamental Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
- Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Su Hyun Ji
- Chemical and Biological Integrative Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
- Department of Chemistry, Sogang University, Seoul 04107, Republic of Korea
| | - Hee Jin Jeong
- Chemical and Biological Integrative Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Jae Eun Jung
- Chemical and Biological Integrative Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Do Hee Oh
- Chemical and Biological Integrative Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Sunyoung Park
- Txinno Bioscience Inc., Yongin 16942, Republic of Korea
| | - Yong-Yea Park
- Txinno Bioscience Inc., Yongin 16942, Republic of Korea
| | - Junghwan Choi
- Txinno Bioscience Inc., Yongin 16942, Republic of Korea
| | - Sungjoon Kim
- Txinno Bioscience Inc., Yongin 16942, Republic of Korea
| | - Nam-Jung Kim
- Department of Fundamental Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Duck-Hyung Lee
- Department of Chemistry, Sogang University, Seoul 04107, Republic of Korea
| | - Chan Sun Park
- Txinno Bioscience Inc., Yongin 16942, Republic of Korea
| | - Seo-Jung Han
- Chemical and Biological Integrative Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
- Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology, Seoul 02792, Republic of Korea
| | - Sanghee Lee
- Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
- Department for HY-KIST Bio-convergence, Hanyang University, Seoul 04763, Republic of Korea
| | - Junwon Choi
- Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea
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8
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Son S, Lee NR, Gee MS, Song CW, Lee SJ, Lee SK, Lee Y, Kim HJ, Lee JK, Inn KS, Kim NJ. Chemical Knockdown of Phosphorylated p38 Mitogen-Activated Protein Kinase (MAPK) as a Novel Approach for the Treatment of Alzheimer's Disease. ACS Cent Sci 2023; 9:417-426. [PMID: 36968534 PMCID: PMC10037464 DOI: 10.1021/acscentsci.2c01369] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Indexed: 05/28/2023]
Abstract
Targeted protein degradation (TPD) provides unique advantages over gene knockdown in that it can induce selective degradation of disease-associated proteins attributed to pathological mutations or aberrant post-translational modifications (PTMs). Herein, we report a protein degrader, PRZ-18002, that selectively binds to an active form of p38 MAPK. PRZ-18002 induces degradation of phosphorylated p38 MAPK (p-p38) and a phosphomimetic mutant of p38 MAPK in a proteasome-dependent manner. Given that the activation of p38 MAPK plays pivotal roles in the pathophysiology of Alzheimer's disease (AD), selective degradation of p-p38 may provide an attractive therapeutic option for the treatment of AD. In the 5xFAD transgenic mice model of AD, intranasal treatment of PRZ-18002 reduces p-p38 levels and alleviates microglia activation and amyloid beta (Aβ) deposition, leading to subsequent improvement of spatial learning and memory. Collectively, our findings suggest that PRZ-18002 ameliorates AD pathophysiology via selective degradation of p-p38, highlighting a novel therapeutic TPD modality that targets a specific PTM to induce selective degradation of neurodegenerative disease-associated protein.
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Affiliation(s)
- Seung
Hwan Son
- College
of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Na-Rae Lee
- Prazer
Therapeutics Inc., Beobwon-ro
9-gil 26, Songpa-gu, Seoul 05836, Republic of Korea
| | - Min Sung Gee
- College
of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Chae Won Song
- Prazer
Therapeutics Inc., Beobwon-ro
9-gil 26, Songpa-gu, Seoul 05836, Republic of Korea
| | - Soo Jin Lee
- College
of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Sang-Kyung Lee
- Department
of Bioengineering and Institute of Nanoscience and Technology, Hanyang University, Seoul 04763, Republic of Korea
| | - Yoonji Lee
- College
of Pharmacy, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Hee Jin Kim
- Prazer
Therapeutics Inc., Beobwon-ro
9-gil 26, Songpa-gu, Seoul 05836, Republic of Korea
| | - Jong Kil Lee
- College
of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
- Prazer
Therapeutics Inc., Beobwon-ro
9-gil 26, Songpa-gu, Seoul 05836, Republic of Korea
| | - Kyung-Soo Inn
- College
of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
- Prazer
Therapeutics Inc., Beobwon-ro
9-gil 26, Songpa-gu, Seoul 05836, Republic of Korea
| | - Nam-Jung Kim
- College
of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
- Prazer
Therapeutics Inc., Beobwon-ro
9-gil 26, Songpa-gu, Seoul 05836, Republic of Korea
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9
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Lee JH, Son SH, Kim NJ, Im DS. NJK14047 Suppression of the p38 MAPK Ameliorates OVA-Induced Allergic Asthma during Sensitization and Challenge Periods. Biomol Ther (Seoul) 2023; 31:183-192. [PMID: 36171179 PMCID: PMC9970832 DOI: 10.4062/biomolther.2022.078] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/15/2022] [Accepted: 08/01/2022] [Indexed: 11/05/2022] Open
Abstract
p38 MAPK has been implicated in the pathogenesis of asthma as well as pro-allergic Th2 cytokines, orosomucoid-like protein isoform 3 (ORMDL3), regulation of sphingolipid biosynthesis, and regulatory T cell-derived IL-35. To elucidate the role of p38 MAPK in the pathogenesis of asthma, we examined the effect of NJK14047, an inhibitor of p38 MAPK, against ovalbumin (OVA)-induced allergic asthma; we administrated NJK14047 before OVA sensitization or challenge in BALB/c mice. As ORMDL3 regulation of sphingolipid biosynthesis has been implicated in childhood asthma, ORMDL3 expression and sphingolipids contents were also analyzed. NJK14047 inhibited antigen-induced degranulation of RBL-2H3 mast cells. NJK14047 administration both before OVA sensitization and challenge strongly inhibited the increase in eosinophil and lymphocyte counts in the bronchoalveolar lavage fluid. In addition, NJK14047 administration inhibited the increase in the levels of Th2 cytokines. Moreover, NJK14047 reduced the inflammatory score and the number of periodic acid-Schiff-stained cells in the lungs. Further, OVA-induced increase in the levels of C16:0 and C24:1 ceramides was not altered by NJK14047. These results suggest that p38 MAPK plays crucial roles in activation of dendritic and mast cells during sensitization and challenge periods, but not in ORMDL3 and sphingolipid biosynthesis.
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Affiliation(s)
- Ju-Hyun Lee
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02446, Republic of Korea
| | - Seung-Hwan Son
- Department of Basic Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02446, Republic of Korea
| | - Nam-Jung Kim
- Department of Basic Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02446, Republic of Korea
| | - Dong-Soon Im
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02446, Republic of Korea,Department of Basic Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02446, Republic of Korea,Corresponding Author E-mail: , Tel: +82-2-961-9377, Fax: +82-2-961-9580
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10
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Chang E, Im D, Lee HY, Lee M, Lee CM, Kang CK, Park WB, Kim NJ, Choe PG, Oh M. Impact of discontinuing isolation in a private room for patients infected or colonized with vancomycin-resistant enterococci (VRE) on the incidence of healthcare-associated VRE bacteraemia in a hospital with a predominantly shared-room setting. J Hosp Infect 2023; 132:1-7. [PMID: 36473555 DOI: 10.1016/j.jhin.2022.11.017] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 11/21/2022] [Accepted: 11/28/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND Isolating patients infected or colonized with vancomycin-resistant enterococci (VRE) in a private room or cohort room to prevent hospital transmission is controversial. AIM To evaluate the effect of a relaxed isolation policy for VRE-infected or colonized patients on healthcare-associated (HA) VRE bacteraemia in an acute care hospital with a predominantly shared-room setting. METHODS The incidence of HA VRE bacteraemia was compared during a private isolation era (October 2014-September 2017), a cohort isolation era (October 2017-June 2020), and a no isolation era (July 2020-June 2022). Using Poisson regression modelling, an interrupted time-series analysis was conducted to analyse level changes and trends in incidences of HA VRE bacteraemia for each era. FINDINGS The proportion of VRE-infected or -colonized patients staying in shared rooms increased from 18.3% in the private isolation era to 82.6% in the no isolation era (P < 0.001). There was no significant difference in the incidences of HA VRE bacteraemia between the private isolation era and the cohort isolation era (relative risk: 1.01; 95% confidence interval: 0.52-1.98; P = 0.977) or between the cohort isolation era and the no isolation era (0.99; 0.77-1.26; P = 0.903). In addition, there was no significant slope increase in the incidence of HA VRE bacteraemia between any of the eras. CONCLUSION In a hospital with predominantly shared rooms, the relaxation of isolation policy did not result in increased HA VRE bacteraemia, when other infection control measures were maintained.
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Affiliation(s)
- E Chang
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - D Im
- Center for Infection Control, Seoul National University Hospital, Seoul, Republic of Korea
| | - H Y Lee
- Center for Infection Control, Seoul National University Hospital, Seoul, Republic of Korea
| | - M Lee
- Center for Infection Control, Seoul National University Hospital, Seoul, Republic of Korea
| | - C M Lee
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control, Seoul National University Hospital, Seoul, Republic of Korea
| | - C K Kang
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control, Seoul National University Hospital, Seoul, Republic of Korea
| | - W B Park
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control, Seoul National University Hospital, Seoul, Republic of Korea
| | - N J Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control, Seoul National University Hospital, Seoul, Republic of Korea
| | - P G Choe
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control, Seoul National University Hospital, Seoul, Republic of Korea.
| | - M Oh
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control, Seoul National University Hospital, Seoul, Republic of Korea
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11
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Lee HH, Shin JS, Chung KS, Kim JM, Jung SH, Yoo HS, Hassan AHE, Lee JK, Inn KS, Lee S, Kim NJ, Lee KT. 3',4'-Dihydroxyflavone mitigates inflammatory responses by inhibiting LPS and TLR4/MD2 interaction. Phytomedicine 2023; 109:154553. [PMID: 36610153 DOI: 10.1016/j.phymed.2022.154553] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 11/04/2022] [Accepted: 11/15/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND We previously reported the potential inhibitory activity of 3',4'-dihydroxyflavone (DHF) on nitric oxide (NO) and prostaglandin E2 (PGE2) production in lipopolysaccharide (LPS)-stimulated macrophages. PURPOSE We investigated the underlying molecular mechanisms of DHF in LPS-activated macrophages and evaluated its effect on LPS-induced septic shock in mice. METHODS To explore the anti-inflammatory effect of DHF, nitrite, PGE2, and cytokines were measured in vitro and in vivo experiments. In addition, to verify the molecular signaling pathway, quantitative real time-PCR, luciferase assay, nuclear extraction, electrophoretic mobility shift assay, immunocytochemistry, immunoprecipitation, molecular docking analysis, and myeloid differentiation 2 (MD2)-LPS binding assay were conducted. RESULTS DHF suppressed the LPS-induced expression of proinflammatory mediators through nuclear factor-κB (NF-κB), activator protein-1 (AP-1), and interferon regulatory factor 3 (IRF3) inactivation pathways in RAW 264.7 macrophages. Importantly, molecular docking analysis and in vitro binding assays showed that DHF interacts with the hydrophobic pocket of MD2 and then interferes with the interaction between LPS and toll-like receptor 4 (TLR4). DHF inhibited LPS-induced oxidative stress by upregulating nuclear factor erythroid 2-related factor 2 (Nrf2). Treatment of LPS-induced endotoxemia mice with DHF reduced the expression levels of pro-inflammatory mediators via the inactivation of NF-κB, AP-1, and signal transducer and activator of transcription 1 (STAT1) in the lung tissue, thus increasing the survival rate. CONCLUSION Taken together, our data first time revealed the underlying mechanism of the DHF-dependent anti-inflammatory effect by preventing LPS from binding to the TLR4/MD2 complex. Therefore, DHF may be a possible anti-inflammatory agent for the treatment of LPS-mediated inflammatory diseases.
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Affiliation(s)
- Hwi-Ho Lee
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02247, Republic of Korea
| | - Ji-Sun Shin
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02247, Republic of Korea
| | - Kyung-Sook Chung
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02247, Republic of Korea
| | - Jae-Min Kim
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02247, Republic of Korea; Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, Kyung Hee University, Seoul 02247, Republic of Korea
| | - Seang-Hwan Jung
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02247, Republic of Korea; Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, Kyung Hee University, Seoul 02247, Republic of Korea
| | - Hyung-Seok Yoo
- College of Pharmacy, Kyung Hee University, Seoul 02247, Republic of Korea
| | - Ahmed H E Hassan
- Medicinal Chemistry Laboratory, Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul 02247, Republic of Korea; Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Jong Kil Lee
- Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, Seoul 02247, Republic of Korea
| | - Kyung-Soo Inn
- Department of Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul 02247, Republic of Korea
| | - Sangmin Lee
- College of Pharmacy, Kyung Hee University, Seoul 02247, Republic of Korea
| | - Nam-Jung Kim
- College of Pharmacy, Kyung Hee University, Seoul 02247, Republic of Korea.
| | - Kyung-Tae Lee
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02247, Republic of Korea.
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12
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Jang YH, Yang YS, Son SH, Yoo HS, Shin JW, Won HJ, Kim SL, Lim C, Kim NJ. Synthesis of Xanthones via Copper(II)-Catalyzed Dehydrogenative Cyclization and Successive Aromatization in a One-Step Sequence. Org Lett 2022; 24:9216-9221. [PMID: 36512443 DOI: 10.1021/acs.orglett.2c03730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In this study, an unprecedented approach to the xanthone scaffold from cyclohexyl(2-hydroxyphenyl)methanone via dehydrogenative cyclization and a successive aromatization cascade is reported. This methodology affords a novel route to the privileged structure with a wide substrate scope (a total of 29 compounds, ≤96% yield) in a highly atom-economic manner.
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Affiliation(s)
- Yoon Hu Jang
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Yo-Sep Yang
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Seung Hwan Son
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Hyung-Seok Yoo
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Jeong-Won Shin
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Hyuck-Jae Won
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Soo Lim Kim
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Changjin Lim
- School of Pharmacy, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea
| | - Nam-Jung Kim
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea.,College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
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13
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Jeong HJ, Lee HL, Kim SJ, Jeong JH, Ji SH, Kim HB, Kang M, Chung HW, Park CS, Choo H, Yoon HJ, Kim NJ, Lee DH, Lee SH, Han SJ. Identification of novel pyrrolopyrimidine and pyrrolopyridine derivatives as potent ENPP1 inhibitors. J Enzyme Inhib Med Chem 2022; 37:2434-2451. [PMID: 36069240 PMCID: PMC9467556 DOI: 10.1080/14756366.2022.2119566] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
In an effort to discover novel scaffolds of non-nucleotide-derived Ectonucleotide pyrophosphatase/phosphodiesterase 1 (ENPP1) inhibitors to stimulate the Stimulator of Interferon Genes (STING) pathway, we designed and synthesised pyrrolopyrimidine and pyrrolopyridine derivatives and performed structure-activity relationship (SAR) study. We found 18p possessed high potency (IC50 = 25.0 nM) against ENPP1, and activated STING pathway in a concentration dependent manner. Also, in response to STING pathway activation, cytokines such as IFN-β and IP-10 were induced by 18p in a concentration dependent manner. Finally, we discovered that 18p causes inhibition of tumour growth in 4T1 syngeneic mouse model. This study provides new insight into the designing of novel ENPP1 inhibitors and warrants further development of small molecule immune modulators for cancer immunotherapy.
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Affiliation(s)
- Hee Jin Jeong
- Chemical & Biological Integrative Research Center, Korea Institute of Science and Technology, Seoul, Republic of Korea.,Department of Chemistry, Korea University, Seoul, Republic of Korea
| | - Hye Lim Lee
- Brain Science Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea.,Department of Basic Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
| | - Sung Joon Kim
- TXINNO Bioscience Inc, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Jeong Hyun Jeong
- Brain Science Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Su Hyun Ji
- Chemical & Biological Integrative Research Center, Korea Institute of Science and Technology, Seoul, Republic of Korea.,Department of Chemistry, Sogang University, Seoul, Republic of Korea
| | - Han Byeol Kim
- Chemical & Biological Integrative Research Center, Korea Institute of Science and Technology, Seoul, Republic of Korea.,Department of Chemistry, Sogang University, Seoul, Republic of Korea
| | - Miso Kang
- Brain Science Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea.,Department of Basic Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
| | - Hwan Won Chung
- Computational Science Research Center, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Chan Sun Park
- TXINNO Bioscience Inc, Yongin-si, Gyeonggi-do, Republic of Korea
| | - Hyunah Choo
- Brain Science Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Hyo Jae Yoon
- Department of Chemistry, Korea University, Seoul, Republic of Korea
| | - Nam-Jung Kim
- Department of Basic Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea.,Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul, Republic of Korea
| | - Duck-Hyung Lee
- Department of Chemistry, Sogang University, Seoul, Republic of Korea
| | - Sang Hee Lee
- Brain Science Institute, Korea Institute of Science and Technology, Seoul, Republic of Korea.,Department for HY-KIST Bio-convergence, Hanyang University, Seoul, Republic of Korea
| | - Seo-Jung Han
- Chemical & Biological Integrative Research Center, Korea Institute of Science and Technology, Seoul, Republic of Korea.,Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology, Seoul, Republic of Korea
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14
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Lee JH, Son SH, Kim NJ, Im DS. p38 MAPK Inhibitor NJK14047 Suppresses CDNB-Induced Atopic Dermatitis-Like Symptoms in BALB/c Mice. Biomol Ther (Seoul) 2022; 30:501-509. [PMID: 35788499 DOI: 10.4062/biomolther.2022.024] [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: 02/15/2022] [Revised: 05/06/2022] [Accepted: 05/13/2022] [Indexed: 11/05/2022] Open
Abstract
Atopic dermatitis (AD) is a chronic inflammatory skin disorder. Suppression of MAPKs and NF-κB is implicated as a vital mechanism of action of several traditional Chinese medicines for AD therapy. Although overexpression of MAPK mRNA in the skin tissue has been shown in the AD model, the roles of each MAPK in AD pathogenesis have rarely been studied. This study examined the effect of NJK14047, an inhibitor of p38 MAPKs, on AD-like skin lesions induced in BALB/c mice by sensitization and challenges with 1-chloro-2,4-dinitrobenzene (CDNB) on dorsal skin and ears, respectively. After induction of AD, NJK14047 (2.5 mg/kg) or dexamethasone (10 mg/kg) was administrated for 3 weeks via intraperitoneal injection. Following its administration, NJK14047 suppressed CDNB-induced AD-like symptoms such as skin hypertrophy and suppressed mast cell infiltration into the skin lesions. It also reduced CDNB-induced increase in TH2 cytokine (IL-13) and TH1 cytokines (interferon-γ and IL-12A) levels but did not decrease serum IgE level. Furthermore, NJK14047 blocked CDNB-induced lymph node enlargement. These results suggest that NJK14047, a p38 MAPK inhibitor, might be an optimal therapeutic option with unique modes of action for AD treatment.
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Affiliation(s)
- Ju-Hyun Lee
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02446, Republic of Korea
| | - Seung-Hwan Son
- Department of Basic Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02446, Republic of Korea
| | - Nam-Jung Kim
- Department of Basic Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02446, Republic of Korea
| | - Dong-Soon Im
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02446, Republic of Korea.,Department of Basic Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02446, Republic of Korea
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15
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Cho E, Youn K, Kwon H, Jeon J, Cho WS, Park SJ, Son SH, Jang DS, Shin CY, Moon M, Jun M, Kim NJ, Kim DH. Eugenitol ameliorates memory impairments in 5XFAD mice by reducing Aβ plaques and neuroinflammation. Biomed Pharmacother 2022; 148:112763. [PMID: 35240526 DOI: 10.1016/j.biopha.2022.112763] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 02/12/2022] [Accepted: 02/24/2022] [Indexed: 11/18/2022] Open
Abstract
Alzheimer's disease (AD) is caused by various pathological mechanisms; therefore, it is necessary to develop drugs that simultaneously act on multiple targets. In this study, we investigated the effects of eugenitol, which has anti-amyloid β (Aβ) and anti-neuroinflammatory effects, in an AD mouse model. We found that eugenitol potently inhibited Aβ plaque and oligomer formation. Moreover, eugenitol dissociated the preformed Aβ plaques and reduced Aβ-induced nero2a cell death. An in silico docking simulation study showed that eugenitol may interact with Aβ1-42 monomers and fibrils. Eugenitol showed radical scavenging effects and potently reduced the release of proinflammatory cytokines from lipopolysaccharide-treated BV2 cells. Systemic administration of eugenitol blocked Aβ aggregate-induced memory impairment in the Morris water maze test in a dose-dependent manner. In 5XFAD mice, prolonged administration of eugenitol ameliorated memory and hippocampal long-term potentiation impairment. Moreover, eugenitol significantly reduced Aβ deposits and neuroinflammation in the hippocampus of 5XFAD mice. These results suggest that eugenitol, which has anti-Aβ aggregation, Aβ fibril dissociation, and anti-inflammatory effects, potently modulates AD-like pathologies in 5XFAD mice, and could be a promising candidate for AD therapy.
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Affiliation(s)
- Eunbi Cho
- Department of Pharmacology and Department of Advanced Translational Medicine, School of Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Kumju Youn
- Department of Food Science and Nutrition, Dong-A University, Busan 49315, Republic of Korea
| | - Huiyoung Kwon
- Department of Health Sciences, The Graduate School of Dong-A University, Dong-A University, Busan 49315, Republic of Korea
| | - Jieun Jeon
- Department of Pharmacology and Department of Advanced Translational Medicine, School of Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Wan-Seob Cho
- Department of Health Sciences, The Graduate School of Dong-A University, Dong-A University, Busan 49315, Republic of Korea
| | - Se Jin Park
- School of Natural Resources and Environmental Sciences, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Seung Hwan Son
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Dae Sik Jang
- Department of Life and Nanopharmaceutical Science, Republic of Korea, Kyung Hee East-West Pharmaceutical Research Institute, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Chan Young Shin
- Department of Pharmacology and Department of Advanced Translational Medicine, School of Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Minho Moon
- Department of Biochemistry, College of Medicine, Konyang University, Daejeon 35365, Republic of Korea
| | - Mira Jun
- Department of Health Sciences, The Graduate School of Dong-A University, Dong-A University, Busan 49315, Republic of Korea.
| | - Nam-Jung Kim
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea.
| | - Dong Hyun Kim
- Department of Pharmacology and Department of Advanced Translational Medicine, School of Medicine, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea; Department of Pharmacology, School of Medicine, Konkuk University, Seoul 05029, Republic of Korea; Institute of Biomedical Sciences & Technology, Konkuk University, Seoul 05029, Republic of Korea.
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16
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Jeon MJ, Lee H, Lee J, Baek SY, Lee D, Jo S, Lee JY, Kang M, Jung HR, Han SB, Kim NJ, Lee S, Kim H. Development of Potent Immune Modulators Targeting Stimulator of Interferon Genes Receptor. J Med Chem 2022; 65:5407-5432. [PMID: 35315650 DOI: 10.1021/acs.jmedchem.1c01795] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Stimulator of interferon genes (STING) is an endoplasmic reticulum-membrane protein that plays important roles in cancer immunotherapy by activating innate immune responses. We designed and synthesized STING modulators and characterized compounds 4a and 4c that share a crucial amidobenzimidazole moiety. In vitro STING binding and cell-based activity assays demonstrated the potency and efficacy of the compounds that function as direct STING agonists by stimulating STING downstream signaling and promoting type I interferon immune responses. In vitro metabolic studies and the pharmacokinetic properties of the compounds led us to investigate their anticancer activity in an in vivo syngeneic model. Intravenous injection of compounds 4a and 4c significantly decreased tumor volume in a CT26 murine colorectal carcinoma model, and the immunological memory-derived cancer inhibition was observed in 4c-treated mouse models. The present results suggest the therapeutic potential of the compounds for cancer immunotherapy via STING-mediated immune activation.
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Affiliation(s)
- Min Jae Jeon
- Therapeutics & Biotechnology Division, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea.,Department of Medicinal Chemistry and Pharmacology, University of Science & Technology, Daejeon 34113, Republic of Korea
| | - Hyelim Lee
- Creative Research Center for Brain Science, Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.,Department of Basic Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jeehee Lee
- Creative Research Center for Brain Science, Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.,Department for HY-KIST Bio-convergence, Hanyang University, Seoul 04763, Republic of Korea
| | - Soo Yeon Baek
- Creative Research Center for Brain Science, Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Donghee Lee
- Creative Research Center for Brain Science, Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Seongman Jo
- Therapeutics & Biotechnology Division, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea.,Department of Pharmacy, College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Joo-Youn Lee
- Therapeutics & Biotechnology Division, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea
| | - Miso Kang
- Creative Research Center for Brain Science, Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.,Department of Basic Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Hee Ra Jung
- Creative Research Center for Brain Science, Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.,Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Soo Bong Han
- Therapeutics & Biotechnology Division, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea.,Department of Medicinal Chemistry and Pharmacology, University of Science & Technology, Daejeon 34113, Republic of Korea
| | - Nam-Jung Kim
- Department of Basic Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea.,Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Sanghee Lee
- Creative Research Center for Brain Science, Brain Science Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.,Department for HY-KIST Bio-convergence, Hanyang University, Seoul 04763, Republic of Korea
| | - Hyejin Kim
- Therapeutics & Biotechnology Division, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea
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17
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Yang YS, Lee S, Son SH, Yoo HS, Jang YH, Shin JW, Won HJ, Sim J, Kim NJ. Ligand-controlled regiodivergent direct arylation of indoles via oxidative boron Heck reaction. Org Chem Front 2022. [DOI: 10.1039/d2qo01326f] [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: 02/03/2023]
Abstract
Ligand-controlled direct arylation of indoles via Pd(ii) catalyzed oxidative boron Heck reaction under aerobic conditions is reported.
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Affiliation(s)
- Yo-Sep Yang
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Sangmin Lee
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Seung Hwan Son
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Hyung-Seok Yoo
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Yoon Hu Jang
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jeong-Won Shin
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Hyuck-Jae Won
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jaehoon Sim
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Nam-Jung Kim
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
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18
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Jung J, Choe PG, Choi S, Kim E, Lee HY, Kang CK, Lee J, Park WB, Lee S, Kim NJ, Choi EH, Oh M. Reduction in the acquisition rate of carbapenem-resistant Acinetobacter baumannii (CRAB) after room privatization in an intensive care unit. J Hosp Infect 2021; 121:14-21. [PMID: 34929231 DOI: 10.1016/j.jhin.2021.12.012] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 12/08/2021] [Accepted: 12/12/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND Acinetobacter baumannii is one of the major pathogens responsible for healthcare-associated infections, especially in intensive care units (ICUs). AIM To evaluate the effect of room privatization in an ICU on the acquisition of carbapenem-resistant A. baumannii (CRAB). METHODS Between March and August 2017, a medical ICU was renovated from a multibed bay room to single rooms. Acquisition of CRAB was compared between patients admitted to the ICU over 18 months pre-renovation (September 2015 to February 2017) and post-renovation (September 2017 to February 2019). A Cox proportional hazard model was used with adjustment for demographics and comorbidities. FINDINGS Of the 901 patients, who contributed 8,276 patient-days, 95 (10.5%) acquired CRAB during their ICU stay. The CRAB acquisition rate was significantly higher during the pre-renovation period (1.87 per 100 patient-days) than during the post-renovation period (0.39 per 100 patient-days) (P < 0.001). In the multivariable Cox regression model, CRAB acquisition was significantly associated with the presence of a feeding tube (adjusted hazard ratio [aHR], 6.08; 95% confidence interval [CI], 2.46-15.06; P < 0.001), continuous renal replacement therapy (aHR, 1.66; 95% CI, 1.09-2.53; P = 0.019) and admission after renovation of the ICU to single rooms (aHR, 0.23; 95% CI, 0.12-0.41; P < 0.001). CONCLUSIONS Renovation of ICUs to single rooms is an efficient strategy to prevent transmission of multidrug-resistant organisms and hospital-acquired infections.
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Affiliation(s)
- J Jung
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - P G Choe
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control and Prevention, Seoul National University Hospital, Seoul, Republic of Korea.
| | - S Choi
- Center for Infection Control and Prevention, Seoul National University Hospital, Seoul, Republic of Korea
| | - E Kim
- Center for Infection Control and Prevention, Seoul National University Hospital, Seoul, Republic of Korea
| | - H Y Lee
- Center for Infection Control and Prevention, Seoul National University Hospital, Seoul, Republic of Korea
| | - C K Kang
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control and Prevention, Seoul National University Hospital, Seoul, Republic of Korea
| | - J Lee
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - W B Park
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control and Prevention, Seoul National University Hospital, Seoul, Republic of Korea
| | - S Lee
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - N J Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control and Prevention, Seoul National University Hospital, Seoul, Republic of Korea
| | - E H Choi
- Center for Infection Control and Prevention, Seoul National University Hospital, Seoul, Republic of Korea; Department of Pediatrics, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - M Oh
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea; Center for Infection Control and Prevention, Seoul National University Hospital, Seoul, Republic of Korea
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19
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Yoo HS, Yang YS, Kim SL, Son SH, Jang YH, Shin JW, Kim NJ. Syntheses of 1H-Indoles, Quinolines, and 6-Membered Aromatic N-Heterocycle-Fused Scaffolds via Palladium(II)-Catalyzed Aerobic Dehydrogenation under Alkoxide-Free Conditions. Chem Asian J 2021; 16:3469-3475. [PMID: 34494376 DOI: 10.1002/asia.202100861] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/25/2021] [Indexed: 12/14/2022]
Abstract
Aromatic N-heterocycle-fused scaffolds such as indoles and quinolines are important core structures found in various bioactive natural products and synthetic compounds. Recently, various dehydrogenation methods with the help of alkoxides, known to significantly promote dihydro- or tetrahydro-heterocycles to be oxidized, were developed for the heterocycle synthesis. However, these approaches are sometimes unsuitable due to resulting undesired side reactions such as reductive dehalogenation. Herein, expedient syntheses of 1H-indoles, quinolines, and 6-membered N-heterocycle-fused scaffolds from their hydrogenated forms through palladium(II)-catalyzed aerobic dehydrogenation under alkoxide-free conditions are reported. A total of 48 compounds were successfully synthesized with a wide range of functional groups including halogens (up to 99% yield). These methodologies provide facile routes for various privileged structures possessing aromatic N-heterocycles without the help of alkoxides, in highly efficient manners.
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Affiliation(s)
- Hyung-Seok Yoo
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Yo-Sep Yang
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Soo Lim Kim
- Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Seung Hwan Son
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Yoon Hu Jang
- Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Jeong-Won Shin
- Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Nam-Jung Kim
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea.,Department of Life and Nanopharmaceutical Sciences, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
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20
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Son SH, Shin JW, Won HJ, Yoo HS, Cho YY, Kim SL, Jang YH, Park BY, Kim NJ. Synthesis of meta-(Indol-3-yl)phenols from Indoles and Cyclohexenone via Palladium(II)-Catalyzed Oxidative Heck Reaction and Dehydrogenative Aromatization in a One-Step Sequence. Org Lett 2021; 23:7467-7471. [PMID: 34523938 DOI: 10.1021/acs.orglett.1c02679] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Facile construction of a meta-(indol-3-yl)phenol framework with a wide substrate scope (a total of 25 compounds) via a palladium(II)-catalyzed oxidative Heck reaction and dehydrogenative aromatization in a one-step sequence is reported. This methodology affords a novel route for the privileged structures that are challenging to access via a direct link between indole and phenol, in a highly efficient and atom-economical manner.
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Affiliation(s)
- Seung Hwan Son
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Jeong-Won Shin
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Hyuck-Jae Won
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Hyung-Seok Yoo
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Yang Yil Cho
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Soo Lim Kim
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Yoon Hu Jang
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Boyoung Y Park
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Nam-Jung Kim
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea.,Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
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21
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Son SH, Do JM, Yoo JN, Lee HW, Kim NK, Yoo HS, Gee MS, Kim JH, Seong JH, Inn KS, Seo MD, Lee JK, Kim NJ. Identification of ortho catechol-containing isoflavone as a privileged scaffold that directly prevents the aggregation of both amyloid β plaques and tau-mediated neurofibrillary tangles and its in vivo evaluation. Bioorg Chem 2021; 113:105022. [PMID: 34098397 DOI: 10.1016/j.bioorg.2021.105022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 04/03/2021] [Accepted: 05/23/2021] [Indexed: 12/15/2022]
Abstract
In this study, polyhydroxyisoflavones that directly prevent the aggregation of both amyloid β (Aβ) and tau were expediently synthesized via divergent Pd(0)-catalyzed Suzuki-Miyaura coupling and then biologically evaluated. By preliminary structure-activity relationship studies using thioflavin T (ThT) assays, an ortho-catechol containing isoflavone scaffold was proven to be crucial for preventing both Aβ aggregation and tau-mediated neurofibrillary tangle formation. Additional TEM experiment confirmed that ortho-catechol containing isoflavone 4d significantly prevented the aggregation of both Aβ and tau. To investigate the mode of action (MOA) of 4d, which possesses an ortho-catechol moiety, 1H-15N HSQC NMR analysis was thoroughly performed and the result indicated that 4d could directly inhibit both the formation of Aβ42 fibrils and the formation of tau-derived neurofibrils, probably through the catechol-mediated nucleation of tau. Finally, 4d was demonstrated to alleviate cognitive impairment and pathologies related to Alzheimer's disease in a 5XFAD transgenic mouse model.
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Affiliation(s)
- Seung Hwan Son
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Ji Min Do
- Department of Biomedical Science and Technology, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Ji-Na Yoo
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Republic of Korea; Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea
| | - Hyun Woo Lee
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Nam Kwon Kim
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Hyung-Seok Yoo
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Min Sung Gee
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jong-Ho Kim
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Ji Hye Seong
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Kyung-Soo Inn
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Min-Duk Seo
- College of Pharmacy and Research Institute of Pharmaceutical Science and Technology (RIPST), Ajou University, Suwon 16499, Republic of Korea; Department of Molecular Science and Technology, Ajou University, Suwon 16499, Republic of Korea.
| | - Jong Kil Lee
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea.
| | - Nam-Jung Kim
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea.
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22
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Kim EH, Kim SJ, Na HK, Han W, Kim NJ, Suh YG, Surh YJ. 15-Deoxy-Δ 12,14-prostaglandin J 2 Upregulates VEGF Expression via NRF2 and Heme Oxygenase-1 in Human Breast Cancer Cells. Cells 2021; 10:cells10030526. [PMID: 33801351 PMCID: PMC8002112 DOI: 10.3390/cells10030526] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 02/23/2021] [Accepted: 02/25/2021] [Indexed: 12/12/2022] Open
Abstract
There is a plethora of evidence to support that inflammation is causally linked to carcinogenesis. Cyclooxygenase-2 (COX-2), a rate-limiting enzyme in the biosynthesis of prostaglandins, is inappropriately overexpressed in various cancers and hence recognized as one of the hallmarks of chronic inflammation-associated malignancies. However, the mechanistic role of COX-2 as a link between inflammation and cancer remains largely undefined. In this study, we found that 15-deoxy-Δ12,14-prostaglandin J2 (15d-PGJ2), one of the final products of COX-2, induced upregulation of vascular endothelial growth factor (VEGF) and capillary formation and migration through nuclear factor erythroid 2-related factor 2 (NRF2)-dependent heme oxygenase-1 (HO-1) induction in MCF-7 cells. Analysis of the publicly available TCGA data set showed that high mRNA levels of both COX-2 and NRF2 correlated with the poor clinical outcomes in breast cancer patients. Moreover, human tissue analysis showed that the levels of 15d-PGJ2 as well the expression of COX-2, NRF2, and HO-1 were found to be increased in human breast cancer tissues. In conclusion, the elevated levels of 15d-PGJ2 during inflammatory response activate VEGF expression through NRF2-driven induction of HO-1 in human breast cancer cells, proposing a novel mechanism underlying the oncogenic function of 15d-PGJ2.
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Affiliation(s)
- Eun-Hee Kim
- College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Seongnam 13488, Korea;
- Correspondence: (E.-H.K.); (Y.-J.S.); Tel.: +82-31-881-7179 (E.-H.K.); +82-2-880-7845 (Y.-J.S.)
| | - Su-Jung Kim
- Tumor Microenvironment Global Core Research Center, College of Pharmacy, Seoul National University, Seoul 08826, Korea;
| | - Hye-Kyung Na
- Department of Food Science and Biotechnology, College of Knowledge-Based Services Engineering, Sungshin Women’s University, Seoul 01133, Korea;
| | - Wonshik Han
- Cancer Research Institute, Seoul National University, Seoul 03080, Korea;
- Department of Surgery, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Nam-Jung Kim
- College of Pharmacy, Kyung Hee University, Seoul 02447, Korea;
| | - Young-Ger Suh
- College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Seongnam 13488, Korea;
| | - Young-Joon Surh
- Tumor Microenvironment Global Core Research Center, College of Pharmacy, Seoul National University, Seoul 08826, Korea;
- Cancer Research Institute, Seoul National University, Seoul 03080, Korea;
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul 08826, Korea
- Correspondence: (E.-H.K.); (Y.-J.S.); Tel.: +82-31-881-7179 (E.-H.K.); +82-2-880-7845 (Y.-J.S.)
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23
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Son SE, Kim NJ, Im DS. Development of Free Fatty Acid Receptor 4 (FFA4/GPR120) Agonists in Health Science. Biomol Ther (Seoul) 2021; 29:22-30. [PMID: 33372166 PMCID: PMC7771848 DOI: 10.4062/biomolther.2020.213] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 11/28/2020] [Accepted: 11/30/2020] [Indexed: 12/14/2022] Open
Abstract
Till the 21st century, fatty acids were considered as merely building blocks for triglycerides, phospholipids, or cholesteryl esters. However, the discovery of G protein-coupled receptors (GPCRs) for free fatty acids at the beginning of the 21st century challenged that idea and paved way for a new field of research, merged into the field of receptor pharmacology for intercellular lipid mediators. Among the GPCRs for free fatty acids, free fatty acid receptor 4 (FFA4, also known as GPR120) recognizes long-chain polyunsaturated fatty acids such as DHA and EPA. It is significant in drug discovery because it regulates obesity-induced metaflammation and GLP-1 secretion. Our study reviews information on newly developed FFA4 agonists and their application in pathophysiologic studies and drug discovery. It also offers a potency comparison of the FFA4 agonists in an AP-TGF-α shedding assay.
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Affiliation(s)
- So-Eun Son
- Department of Pharmacy, College of Pharmacy, and Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Nam-Jung Kim
- Department of Pharmacy, College of Pharmacy, and Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Dong-Soon Im
- Department of Pharmacy, College of Pharmacy, and Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
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24
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Son SH, Cho YY, Yoo HS, Lee SJ, Kim YM, Jang HJ, Kim DH, Shin JW, Kim NJ. Divergent synthesis of flavones and flavanones from 2′-hydroxydihydrochalcones via palladium(ii)-catalyzed oxidative cyclization. RSC Adv 2021; 11:14000-14006. [PMID: 35423945 PMCID: PMC8697754 DOI: 10.1039/d1ra01672e] [Citation(s) in RCA: 7] [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: 03/03/2021] [Accepted: 04/01/2021] [Indexed: 12/21/2022] Open
Abstract
Divergent and versatile synthetic routes to flavones and flavanones via efficient Pd(ii) catalysis are disclosed. These Pd(ii) catalyses expediently provide a variety of flavones and flavanones from 2′-hydroxydihydrochalcones as common intermediates, depending on oxidants and additives, via discriminate oxidative cyclization sequences involving dehydrogenation, respectively, in a highly atom-economic manner. Divergent and versatile synthetic routes to flavones and flavanones via efficient Pd(ii) catalysis are disclosed.![]()
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Affiliation(s)
- Seung Hwan Son
- College of Pharmacy
- Kyung Hee University
- Seoul 02447
- Republic of Korea
| | - Yang Yil Cho
- College of Pharmacy
- Kyung Hee University
- Seoul 02447
- Republic of Korea
| | - Hyung-Seok Yoo
- College of Pharmacy
- Kyung Hee University
- Seoul 02447
- Republic of Korea
| | - Soo Jin Lee
- College of Pharmacy
- Kyung Hee University
- Seoul 02447
- Republic of Korea
| | - Young Min Kim
- College of Pharmacy
- Kyung Hee University
- Seoul 02447
- Republic of Korea
| | - Hyu Jeong Jang
- College of Pharmacy
- Kyung Hee University
- Seoul 02447
- Republic of Korea
| | - Dong Hwan Kim
- College of Pharmacy
- Kyung Hee University
- Seoul 02447
- Republic of Korea
| | - Jeong-Won Shin
- Department of Life and Nanopharmaceutical Sciences
- Graduate School
- Kyung Hee University
- Seoul 02447
- Republic of Korea
| | - Nam-Jung Kim
- College of Pharmacy
- Kyung Hee University
- Seoul 02447
- Republic of Korea
- Department of Life and Nanopharmaceutical Sciences
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Kroshus E, Cameron KL, Coatsworth JD, D'Lauro C, Kim NJ, Lee KM, Register-Mihalik J, Milroy JJ, Roetert EP, Schmidt JD, Silverman RD, Warmath D, Wayment HA, Hainline B. Improving Concussion Education: Consensus From the NCAA-Department of Defense Mind Matters Research & Education Grand Challenge. J Spec Oper Med 2020; 20:88-95. [PMID: 32969010 DOI: 10.55460/6uwz-d7uu] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/01/2020] [Indexed: 11/09/2022]
Abstract
Early disclosure of possible concussive symptoms has the potential to improve concussion-related clinical outcomes. The objective of the present consensus process was to provide useful and feasible recommendations for collegiate athletic departments and military service academy leaders about how to increase concussion symptom disclosure in their setting. Consensus was obtained using a modified Delphi process. Participants in the consensus process were grant awardees from the National Collegiate Athletic Association and Department of Defense Mind Matters Research & Education Grand Challenge and a multidisciplinary group of stakeholders from collegiate athletics and military service academies. The process included a combination of in-person meetings and anonymous online voting on iteratively modified recommendations for approaches to improve concussion symptom disclosure. Recommendations were rated in terms of their utility and feasibility in collegiate athletic and MSA settings with a priori thresholds for retaining, discarding, and revising statements. A total of 17 recommendations met thresholds for utility and feasibility and are grouped for discussion in five domains: (1) content of concussion education for athletes and MSA cadets, (2) dissemination and implementation of concussion education for athletes and military service academy cadets, (3) other stakeholder concussion education, (4) team and unit-level processes, and (5) organizational processes. Collectively, these recommendations provide a path forward for athletics departments and military service academies in terms of the behavioral health supports and institutional processes that are needed to increase early and honest disclosure of concussion symptoms and ultimately to improve clinical care outcomes.
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Huh E, Choi JG, Noh D, Yoo HS, Ryu J, Kim NJ, Kim H, Oh MS. Ginger and 6-shogaol protect intestinal tight junction and enteric dopaminergic neurons against 1-methyl-4-phenyl 1,2,3,6-tetrahydropyridine in mice. Nutr Neurosci 2020; 23:455-464. [PMID: 30230979 DOI: 10.1080/1028415x.2018.1520477] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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] [Indexed: 02/07/2023]
Abstract
Objective: Ginger and its compound, 6-shogaol, have been known for improving gastrointestinal (GI) function and reducing inflammatory responses in GI tract. Recently, the treatment of GI dysfunction has been recognized as an important part of the management of neurodegenerative diseases, especially for Parkinson's disease (PD). In this study, we investigated whether ginger and 6-shogaol attenuate disruptions induced by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) on the intestinal barrier and the enteric dopaminergic neurons.Methods: C57BL/6J mice received MPTP (30 mg/kg) for 5 days to induce GI alterations. Ginger (30, 100, 300 mg/kg) and 6-shogaol (10 mg/kg) were treated by gavage feeding for 15 days including the period of MPTP injection.Results: Ginger and 6-shogaol protected intestinal tight junction proteins disrupted by MPTP in mouse colon. In addition, ginger and 6-shogaol suppressed the increase of inducible nitric oxide synthase, cyclooxygenase-2, TNF-α and IL-1β activated by macrophage. Moreover, ginger and 6-shogaol suppressed the MPTP-induced enteric dopaminergic neuronal damage via increasing the cell survival signaling pathway.Conclusion: These results indicate that ginger and 6-shogaol restore the disruption of intestinal integrity and enteric dopaminergic neurons in an MPTP-injected mouse PD model by inhibiting the processes of inflammation and apoptosis, suggesting that they may attenuate the GI dysfunction in PD patients.
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Affiliation(s)
- Eugene Huh
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
- Department of Oriental Pharmaceutical Science, College of Pharmacy and Kyung Hee East-West Pharmaceutical Research Institute, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Jin Gyu Choi
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Dongjin Noh
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Hyung-Seok Yoo
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Jeewon Ryu
- Department of Oriental Pharmaceutical Science, College of Pharmacy and Kyung Hee East-West Pharmaceutical Research Institute, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Nam-Jung Kim
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Hocheol Kim
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Myung Sook Oh
- Department of Oriental Pharmaceutical Science, College of Pharmacy and Kyung Hee East-West Pharmaceutical Research Institute, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
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Kang SB, Yoo HS, Jeon SH, Song CW, Lee NR, Kim NJ, Lee JK, Inn KS. Identification of 3',4',5'-trihydroxyflavone as an mammalian target of rapamycin inhibitor and its suppressive effects on dextran sulfate sodium-induced ulcerative colitis. Int Immunopharmacol 2020; 84:106524. [PMID: 32334388 DOI: 10.1016/j.intimp.2020.106524] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 03/29/2020] [Accepted: 04/15/2020] [Indexed: 12/12/2022]
Abstract
Flavone derivatives have been shown to possess anti-inflammatory properties in various inflammation model systems; however, their underlying molecular mechanisms remain elusive. In this study, a flavone derivative 3',4',5'-trihydroxyflavone (THF; NJK16003) was synthesized, and its anti-inflammatory effects and molecular targets were investigated using in vitro systems and an in vivo colitis model. NJK16003 showed potent anti-inflammatory activities in cell-based assays using macrophages. In vitro enzyme activity assays using various inflammation-related kinases revealed the mammalian target of rapamycin (mTOR) as a possible molecular target. Treatment of RAW264.7 cells with NJK16003 resulted in an increase in light chain 3B protein lipidation and a decrease in p62 protein levels and ribosomal S6 kinase phosphorylation, indicating that NJK16003 induces autophagy through mTOR inhibition. NJK16003 treatment resulted in significant induction of autophagy and suppression of inflammatory responses in intestinal epithelial cells. Autophagy induction has been shown to alleviate colitis by suppressing inflammatory responses and apoptotic cell death of intestinal epithelial cells. Indeed, inflammatory responses and intestinal epithelial cell death in our DSS-induced colitis mouse model were significantly suppressed by NJK16003 treatment. Our results indicate that NJK16003 could suppress inflammation by inducing autophagy through its mTOR inhibitory activity. These results suggest that NJK16003 could be a possible therapeutic agent for the treatment of inflammatory bowel diseases including colitis.
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Affiliation(s)
- Sung-Bae Kang
- Department of Life and Nanopharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Hyung-Seok Yoo
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Seung Ho Jeon
- Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Chae Won Song
- Department of Life and Nanopharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Na-Rae Lee
- Department of Life and Nanopharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Nam-Jung Kim
- Department of Life and Nanopharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea.
| | - Jong Kil Lee
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea.
| | - Kyung-Soo Inn
- Department of Life and Nanopharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea.
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Gee MS, Son SH, Jeon SH, Do J, Kim N, Ju YJ, Lee SJ, Chung EK, Inn KS, Kim NJ, Lee JK. A selective p38α/β MAPK inhibitor alleviates neuropathology and cognitive impairment, and modulates microglia function in 5XFAD mouse. Alzheimers Res Ther 2020; 12:45. [PMID: 32317025 PMCID: PMC7175487 DOI: 10.1186/s13195-020-00617-2] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 04/08/2020] [Indexed: 12/16/2022]
Abstract
Background Chronic neuroinflammation, aggressive amyloid beta (Aβ) deposition, neuronal cell loss, and cognitive impairment are pathological presentations of Alzheimer’s disease (AD). Therefore, resolution of neuroinflammation and inhibition of Aβ-driven pathology have been suggested to be important strategies for AD therapy. Previous efforts to prevent AD progression have identified p38 mitogen-activated protein kinases (MAPKs) as a promising target for AD therapy. Recent studies showed pharmacological inhibition of p38α MAPK improved memory impairment in AD mouse models. Methods In this study, we used an AD mouse model, 5XFAD, to explore the therapeutic potential of NJK14047 which is a novel, selective p38α/β MAPK inhibitor. The mice were injected with 2.5 mg/kg NJK14047 or vehicle every other day for 3 months. Morris water maze task and histological imaging analysis were performed. Protein and mRNA expression levels were measured using immunoblotting and qRT-PCR, respectively. In vitro studies were conducted to measure the cytotoxicity of microglia- and astrocyte-conditioned medium on primary neurons using the MTT assay and TUNEL assay. Results NJK14047 treatment downregulated phospho-p38 MAPK levels, decreased the amount of Aβ deposits, and reduced spatial learning memory loss in 9-month-old 5XFAD mice. While the pro-inflammatory conditions were decreased, the expression of alternatively activated microglial markers and microglial phagocytic receptors was increased. Furthermore, NJK14047 treatment reduced the number of degenerating neurons labeled with Fluoro-Jade B in the brains of 5XFAD mice. The neuroprotective effect of NJK14047 was further confirmed by in vitro studies. Conclusion Taken together, a selective p38α/β MAPK inhibitor NJK14047 successfully showed therapeutic effects for AD in 5XFAD mice. Based on our data, p38 MAPK inhibition is a potential strategy for AD therapy, suggesting NJK14047 as one of the promising candidates for AD therapeutics targeting p38 MAPKs.
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Affiliation(s)
- Min Sung Gee
- Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Seung Hwan Son
- Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Seung Ho Jeon
- Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Jimin Do
- Department of Biomedical Science and Technology, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Namkwon Kim
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Yeon-Joo Ju
- Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Soo Jin Lee
- Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Eun Kyoung Chung
- Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Kyung-Soo Inn
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea.
| | - Nam-Jung Kim
- Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea. .,Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea. .,Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea.
| | - Jong Kil Lee
- Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea. .,Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea.
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Kim JH, Kim I, Kang CK, Jun KI, Yoo SH, Chun JY, Jung J, Kim YJ, Kim DY, Jo HB, Kim DY, Koh Y, Shin DY, Hong J, Kim NJ, Yoon SS, Kim TS, Park WB, Oh MD. Enhanced antimicrobial stewardship based on rapid phenotypic antimicrobial susceptibility testing for bacteraemia in patients with haematological malignancies: a randomized controlled trial. Clin Microbiol Infect 2020; 27:69-75. [PMID: 32272171 DOI: 10.1016/j.cmi.2020.03.038] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [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: 01/27/2020] [Revised: 03/30/2020] [Accepted: 03/31/2020] [Indexed: 12/14/2022]
Abstract
OBJECTIVES Recently, rapid phenotypic antimicrobial susceptibility testing (AST) based on microscopic imaging analysis has been developed. The aim of this study was to determine whether implementation of antimicrobial stewardship programmes (ASP) based on rapid phenotypic AST can increase the proportion of patients with haematological malignancies who receive optimal targeted antibiotics during early periods of bacteraemia. METHODS This randomized controlled trial enrolled patients with haematological malignancies and at least one positive blood culture. Patients were randomly assigned 1:1 to conventional (n = 60) or rapid phenotypic (n = 56) AST. The primary outcome was the proportion of patients receiving optimal targeted antibiotics 72 hr after blood collection for culture. RESULTS The percentage receiving optimal targeted antibiotics at 72 hr was significantly higher in the rapid phenotypic AST group (45/56, 80.4%) than in conventional AST group (34/60, 56.7%) (relative risk (RR) 1.42, 95% confidence interval (CI) 1.09-1.83). The percentage receiving unnecessary broad-spectrum antibiotics at 72 hr was significantly lower (7/26, 12.5% vs 18/60, 30.0%; RR 0.42, 95% CI 0.19-0.92) and the mean time to optimal targeted antibiotic treatment was significantly shorter (38.1, standard deviation (SD) 38.2 vs 72.8, SD 93.0 hr; p < 0.001) in the rapid phenotypic AST group. The mean time from blood collection to the AST result was significantly shorter in the rapid phenotypic AST group (48.3, SD 17.6 vs 83.1, SD 22.2 hr). DISCUSSION ASP based on rapid phenotypic AST can rapidly optimize antibiotic treatment for bacteraemia in patients with haematological malignancy. Rapid phenotypic AST can improve antimicrobial stewardship in immunocompromised patients.
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Affiliation(s)
- J-H Kim
- Division of Infectious Diseases, Department of Internal Medicine, Seoul National University Hospital and College of Medicine, Seoul, Republic of Korea
| | - I Kim
- Division of Haematology-Oncology, Department of Internal Medicine, Seoul National University Hospital and College of Medicine, Seoul, Republic of Korea
| | - C K Kang
- Division of Infectious Diseases, Department of Internal Medicine, Seoul National University Hospital and College of Medicine, Seoul, Republic of Korea
| | - K-I Jun
- Division of Infectious Diseases, Department of Internal Medicine, Seoul National University Hospital and College of Medicine, Seoul, Republic of Korea
| | - S H Yoo
- Division of Haematology-Oncology, Department of Internal Medicine, Seoul National University Hospital and College of Medicine, Seoul, Republic of Korea
| | - J Y Chun
- Division of Infectious Diseases, Department of Internal Medicine, Seoul National University Hospital and College of Medicine, Seoul, Republic of Korea
| | - J Jung
- Division of Infectious Diseases, Department of Internal Medicine, Seoul National University Hospital and College of Medicine, Seoul, Republic of Korea
| | - Y J Kim
- Division of Infectious Diseases, Department of Internal Medicine, Seoul National University Hospital and College of Medicine, Seoul, Republic of Korea
| | - D Y Kim
- Division of Infectious Diseases, Department of Internal Medicine, Seoul National University Hospital and College of Medicine, Seoul, Republic of Korea
| | - H B Jo
- Division of Infectious Diseases, Department of Internal Medicine, Seoul National University Hospital and College of Medicine, Seoul, Republic of Korea
| | - D Y Kim
- Division of Infectious Diseases, Department of Internal Medicine, Seoul National University Hospital and College of Medicine, Seoul, Republic of Korea
| | - Y Koh
- Division of Haematology-Oncology, Department of Internal Medicine, Seoul National University Hospital and College of Medicine, Seoul, Republic of Korea
| | - D-Y Shin
- Division of Haematology-Oncology, Department of Internal Medicine, Seoul National University Hospital and College of Medicine, Seoul, Republic of Korea
| | - J Hong
- Division of Haematology-Oncology, Department of Internal Medicine, Seoul National University Hospital and College of Medicine, Seoul, Republic of Korea
| | - N J Kim
- Division of Infectious Diseases, Department of Internal Medicine, Seoul National University Hospital and College of Medicine, Seoul, Republic of Korea
| | - S-S Yoon
- Division of Haematology-Oncology, Department of Internal Medicine, Seoul National University Hospital and College of Medicine, Seoul, Republic of Korea
| | - T S Kim
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea.
| | - W B Park
- Division of Infectious Diseases, Department of Internal Medicine, Seoul National University Hospital and College of Medicine, Seoul, Republic of Korea.
| | - M-D Oh
- Division of Infectious Diseases, Department of Internal Medicine, Seoul National University Hospital and College of Medicine, Seoul, Republic of Korea
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Kwon HY, Kim NJ, Lee CK, Yoon HG, Choi JW, Won C. An innovative magnetic state generator using machine learning techniques. Sci Rep 2019; 9:16706. [PMID: 31723230 PMCID: PMC6853879 DOI: 10.1038/s41598-019-53411-y] [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: 04/12/2019] [Accepted: 10/28/2019] [Indexed: 12/02/2022] Open
Abstract
We propose a new efficient algorithm to simulate magnetic structures numerically. It contains a generative model using a complex-valued neural network to generate k-space information. The output information is hermitized and transformed into real-space spin configurations through an inverse fast Fourier transform. The Adam version of stochastic gradient descent is used to minimize the magnetic energy, which is the cost of our algorithm. The algorithm provides the proper ground spin configurations with outstanding performance. In model cases, the algorithm was successfully applied to solve the spin configurations of magnetic chiral structures. The results also showed that a magnetic long-range order could be obtained regardless of the total simulation system size.
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Affiliation(s)
- H Y Kwon
- Department of Physics, Kyung Hee University, Seoul, 02447, South Korea
- Center for Spintronics, Korea Institute of Science and Technology, Seoul, 02792, South Korea
| | - N J Kim
- Department of Physics, Kyung Hee University, Seoul, 02447, South Korea
| | - C K Lee
- Department of Physics, Kyung Hee University, Seoul, 02447, South Korea
| | - H G Yoon
- Department of Physics, Kyung Hee University, Seoul, 02447, South Korea
| | - J W Choi
- Center for Spintronics, Korea Institute of Science and Technology, Seoul, 02792, South Korea
| | - C Won
- Department of Physics, Kyung Hee University, Seoul, 02447, South Korea.
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Kim J, Jang Y, Kim NJ, Kim H, Yi GC, Shin Y, Kim MH, Yoon S. Study of Chemical Enhancement Mechanism in Non-plasmonic Surface Enhanced Raman Spectroscopy (SERS). Front Chem 2019; 7:582. [PMID: 31482089 PMCID: PMC6710363 DOI: 10.3389/fchem.2019.00582] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [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: 03/15/2019] [Accepted: 08/02/2019] [Indexed: 12/02/2022] Open
Abstract
Surface enhanced Raman spectroscopy (SERS) has been intensively investigated during the past decades for its enormous electromagnetic field enhancement near the nanoscale metallic surfaces. Chemical enhancement of SERS, however, remains rather elusive despite intensive research efforts, mainly due to the relatively complex enhancing factors and inconsistent experimental results. To study details of chemical enhancement mechanism, we prepared various low dimensional semiconductor substrates such as ZnO and GaN that were fabricated via metal organic chemical vapor deposition process. We used three kinds of molecules (4-MPY, 4-MBA, 4-ATP) as analytes to measure SERS spectra under non-plasmonic conditions to understand charge transfer mechanisms between a substrate and analyte molecules leading to chemical enhancement. We observed that there is a preferential route for charge transfer responsible for chemical enhancement, that is, there exists a dominant enhancement process in non-plasmonic SERS. To further confirm our idea of charge transfer mechanism, we used a combination of 2-dimensional transition metal dichalcogenide substrates and analyte molecules. We also observed significant enhancement of Raman signal from molecules adsorbed on 2-dimensional transition metal dichalcogenide surface that is completely consistent with our previous results. We also discuss crucial factors for increasing enhancement factors for chemical enhancement without involving plasmonic resonance.
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Affiliation(s)
- Jayeong Kim
- Department of Physics, Ewha Womans University, Seoul, South Korea
| | - Yujin Jang
- Department of Physics, Ewha Womans University, Seoul, South Korea
| | - Nam-Jung Kim
- Department of Physics and Astronomy, Institute of Applied Physics, Research Institute of Advanced Materials, Seoul National University, Seoul, South Korea
| | - Heehun Kim
- Department of Physics and Astronomy, Institute of Applied Physics, Research Institute of Advanced Materials, Seoul National University, Seoul, South Korea
| | - Gyu-Chul Yi
- Department of Physics and Astronomy, Institute of Applied Physics, Research Institute of Advanced Materials, Seoul National University, Seoul, South Korea
| | - Yukyung Shin
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, South Korea
| | - Myung Hwa Kim
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, South Korea
| | - Seokhyun Yoon
- Department of Physics, Ewha Womans University, Seoul, South Korea
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Yoo HS, Son SH, Cho YY, Lee SJ, Jang HJ, Kim YM, Kim DH, Kim NY, Park BY, Lee YS, Kim NJ. Synthesis of Flavanones via Palladium(II)-Catalyzed One-Pot β-Arylation of Chromanones with Arylboronic Acids. J Org Chem 2019; 84:10012-10023. [DOI: 10.1021/acs.joc.9b01162] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Jo YH, Choi WM, Kim DG, Zargaran A, Sohn SS, Kim HS, Lee BJ, Kim NJ, Lee S. FCC to BCC transformation-induced plasticity based on thermodynamic phase stability in novel V 10Cr 10Fe 45Co xNi 35-x medium-entropy alloys. Sci Rep 2019; 9:2948. [PMID: 30814569 PMCID: PMC6393512 DOI: 10.1038/s41598-019-39570-y] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [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: 04/08/2018] [Accepted: 01/21/2019] [Indexed: 11/09/2022] Open
Abstract
We introduce a novel transformation-induced plasticity mechanism, i.e., a martensitic transformation from fcc phase to bcc phase, in medium-entropy alloys (MEAs). A VCrFeCoNi MEA system is designed by thermodynamic calculations in consideration of phase stability between bcc and fcc phases. The resultantly formed bcc martensite favorably contributes to the transformation-induced plasticity, thereby leading to a significant enhancement in both strength and ductility as well as strain hardening. We reveal the microstructural evolutions according to the Co-Ni balance and their contributions to a mechanical response. The Co-Ni balance plays a leading role in phase stability and consequently tunes the cryogenic-temperature strength-ductility balance. The main difference from recently-reported metastable high-entropy dual-phase alloys is the formation of bcc martensite as a daughter phase, which shows significant effects on strain hardening. The hcp phase in the present MEA mostly acts as a nucleation site for the bcc martensite. Our findings demonstrate that the fcc to bcc transformation can be an attractive route to a new MEA design strategy for improving cryogenic strength-ductility.
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Affiliation(s)
- Y H Jo
- Center for High Entropy Alloys, Pohang University of Science and Technology, Pohang, 790-784, Korea
| | - W M Choi
- Center for High Entropy Alloys, Pohang University of Science and Technology, Pohang, 790-784, Korea
| | - D G Kim
- Center for High Entropy Alloys, Pohang University of Science and Technology, Pohang, 790-784, Korea
| | - A Zargaran
- Graduate Institute of Ferrous Technology, Pohang University of Science and Technology, Pohang, 790-784, Korea
| | - S S Sohn
- Center for High Entropy Alloys, Pohang University of Science and Technology, Pohang, 790-784, Korea.
| | - H S Kim
- Center for High Entropy Alloys, Pohang University of Science and Technology, Pohang, 790-784, Korea
| | - B J Lee
- Center for High Entropy Alloys, Pohang University of Science and Technology, Pohang, 790-784, Korea
| | - N J Kim
- Graduate Institute of Ferrous Technology, Pohang University of Science and Technology, Pohang, 790-784, Korea
| | - S Lee
- Center for High Entropy Alloys, Pohang University of Science and Technology, Pohang, 790-784, Korea
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Kim NJ, Kim J, Park JB, Kim H, Yi GC, Yoon S. Direct observation of quantum tunnelling charge transfers between molecules and semiconductors for SERS. Nanoscale 2018; 11:45-49. [PMID: 30534790 DOI: 10.1039/c8nr08389d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We used high-quality ZnO nanostructures/graphene substrates for understanding the mechanisms of charge transfer (CT) that take place under nonplasmonic conditions. As the optimal conditions for CT processes are found, we studied the range of CT normal to the ZnO surface that is coated with nanoscale HfO2 layers with different thicknesses. We could observe that CT decays over a few nanometers. In addition, we also observed a unique oscillation of the SERS intensity in the atomically thin oxide layers, which reflects the quantum tunneling effects of CT electrons across the oxide layers. To the best of our knowledge, this is the first direct observation of SERS-active charge transport and measurement of a CT span with atomic-scale accuracy.
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Affiliation(s)
- Nam-Jung Kim
- Department of Mechanical & Aerospace Engineering, University of Missouri, Columbia, MO 65211, USA
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Gee MS, Kim SW, Kim N, Lee SJ, Oh MS, Jin HK, Bae JS, Inn KS, Kim NJ, Lee JK. A Novel and Selective p38 Mitogen-Activated Protein Kinase Inhibitor Attenuates LPS-Induced Neuroinflammation in BV2 Microglia and a Mouse Model. Neurochem Res 2018; 43:2362-2371. [PMID: 30327995 DOI: 10.1007/s11064-018-2661-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [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: 02/24/2018] [Revised: 10/01/2018] [Accepted: 10/12/2018] [Indexed: 12/17/2022]
Abstract
Neuroinflammation is an important pathological feature in neurodegenerative diseases. Accumulating evidence has suggested that neuroinflammation is mainly aggravated by activated microglia, which are macrophage like cells in the central nervous system. Therefore, the inhibition of microglial activation may be considered for treating neuroinflammatory diseases. p38 mitogen-activated protein kinase (MAPK) has been identified as a crucial enzyme with inflammatory roles in several immune cells, and its activation also relates to neuroinflammation. Considering the proinflammatory roles of p38 MAPK, its inhibitors can be potential therapeutic agents for neurodegenerative diseases relating to neuroinflammation initiated by microglia activation. This study was designed to evaluate whether NJK14047, a recently identified novel and selective p38 MAPK inhibitor, could modulate microglia-mediated neuroinflammation by utilizing lipopolysaccharide (LPS)-stimulated BV2 cells and an LPS-injected mice model. Our results showed that NJK14047 markedly reduced the production of nitric oxide and prostaglandin E2 by downregulating the expression of various proinflammatory mediators such as nitric oxide synthase, cyclooxygenase-2, tumor necrosis factor-α and interleukin-1β in LPS-induced BV2 microglia. Moreover, NJK14047 significantly reduced microglial activation in the brains of LPS-injected mice. Overall, these results suggest that NJK14047 significantly reduces neuroinflammation in cellular/vivo model and would be a therapeutic candidate for various neuroinflammatory diseases.
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Affiliation(s)
- Min Sung Gee
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul, South Korea
| | - Sang-Won Kim
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul, South Korea
| | - Namkwon Kim
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul, South Korea
| | - Soo Jin Lee
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul, South Korea
| | - Myung Sook Oh
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul, South Korea
| | - Hee Kyung Jin
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Kyungpook National University, Daegu, South Korea
| | - Jae-Sung Bae
- Department of Physiology, Cell and Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Kyung-Soo Inn
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul, South Korea
| | - Nam-Jung Kim
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul, South Korea.
| | - Jong Kil Lee
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul, South Korea.
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Abstract
4-Arylcoumarins (4-aryl-2H-1-benzopyran-2-one), also known as neoflavones, comprise a minor subclass of naturally occurring flavonoids. Because of their broad-spectrum biological activities, arylcoumarins have been attracting the attention of the organic and medicinal chemistry communities, and are considered as an important privileged scaffold. Since the development of Pechmann condensation, a classical acid-catalyzed condensation between phenol and β-keto-carboxylic acid, several versatile and efficient synthetic approaches for 4-arylcoumarins have been reported. This review summarizes recent advances in the synthesis of the 4-arylcoumarin scaffold by classifying them based on the final bond-formation type. In particular, synthetic methods executed under mild and highly efficient conditions, such as solvent-free reactions and transition metal catalysis, are highlighted.
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Affiliation(s)
- Jong-Wha Jung
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, Korea.
| | - Nam-Jung Kim
- College of Pharmacy, Kyung Hee University, Seoul 02453, Korea.
| | - Hwayoung Yun
- College of Pharmacy, Pusan National University, Busan 46241, Korea.
| | - Young Taek Han
- College of Pharmacy, Dankook University, Cheonan 31116, Korea.
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Gee MS, Kang SB, Kim N, Choi J, Kim NJ, Kim BJ, Inn KS, Lee JK. Bardoxolone Methyl Suppresses Hepatitis B Virus Large Surface Protein Variant W4P-Related Carcinogenesis and Hepatocellular Carcinoma Cell Proliferation Via the Inhibition of Signal Transducer and Activator of Transcription 3 Signaling. Pharmacology 2018; 102:105-113. [PMID: 29953997 DOI: 10.1159/000489998] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 03/02/2018] [Accepted: 05/14/2018] [Indexed: 09/12/2023]
Abstract
Bardoxolone methyl (CDDO-me) is a synthetic triterpenoid that has been shown to suppress various cancers and inflammation. It has been implicated for the suppression of signal transducer and activator of transcription 3 (STAT3)-mediated signaling, which plays crucial roles in the development and progression of hepatocellular carcinoma (HCC). Previously, we showed that hepatitis B virus (HBV) large surface protein (LHB) variant W4P promotes carcinogenesis and tumor progression through STAT3 activation. Thus, we examined the anti-cancer activity of CDDO-me against HCC using W4P-LHB-expressing NIH3T3 cells and HepG2 and Huh7 HCC cell lines. CDDO-me exerted cytotoxic activity against W4P-LHB-expressing NIH3T3 cells, HepG2 cells, and Huh7 cells, and induced apoptotic cell death in a dose-dependent manner, demonstrating its anti-cancer activity against HCC. Sublethal concentrations of CDDO-me suppressed STAT3 activation by W4P-LHB ectopic expression and interleukin-6 treatment in W4P-LHB-NIH3T3 and Huh7 cells respectively. The suppression of STAT3 activation by CDDO-me in W4P-LHB-NIH3T3 cells was further confirmed by decreased cyclin D1 protein levels and increased p21 and p53 mRNA synthesis. In addition, CDDO-me treatment resulted in decreased cell migration and colony formation in in vitro assays using W4P-LHB-NIH3T3, HepG2, or Huh7 cell lines, supporting its anti-cancer activity through STAT3 inhibition. Furthermore, -CDDO-me administration significantly suppressed tumor growth induced by W4P-LHB-expressing NIH3T3 cells in nude mice, confirming its anti-cancer activity. Collectively, our findings demonstrated that CDDO-me is capable of suppressing STAT3 activation in HCC cells and cells transformed by the natural variant of HBV protein. The results suggest that CDDO-me can be a potential therapeutic agent against HCC, especially tumors related to HBV mutations.
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Affiliation(s)
- Min Sung Gee
- Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, Seoul, Republic of Korea
| | - Sung-Bae Kang
- Department of Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
| | - Namkwon Kim
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul, Republic of Korea
| | - Jiyoon Choi
- Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, Seoul, Republic of Korea
| | - Nam-Jung Kim
- Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, Seoul, Republic of Korea
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
| | - Bum-Joon Kim
- Department of Microbiology and Immunology, Liver Research Institute, Cancer Research Institute and SNUMRC, College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Kyung-Soo Inn
- Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, Seoul, Republic of Korea
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul, Republic of Korea
| | - Jong Kil Lee
- Department of Fundamental Pharmaceutical Science, Graduate School, Kyung Hee University, Seoul, Republic of Korea
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul, Republic of Korea
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Suh J, Kim DH, Kim EH, Park SA, Park JM, Jang JH, Kim SJ, Na HK, Kim ND, Kim NJ, Suh YG, Surh YJ. 15-Deoxy-Δ 12,14-prostaglandin J 2 activates PI3K-Akt signaling in human breast cancer cells through covalent modification of the tumor suppressor PTEN at cysteine 136. Cancer Lett 2018; 424:30-45. [PMID: 29550515 DOI: 10.1016/j.canlet.2018.03.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 03/09/2018] [Accepted: 03/09/2018] [Indexed: 12/11/2022]
Abstract
15-Deoxy-Δ12,14-prostaglandin J2 (15d-PGJ2), one of the terminal products of cyclooxygenase-2-catalized arachidonic acid metabolism, has been shown to stimulate breast cancer cell proliferation and migration through Akt activation, but the underlying mechanisms remain poorly understood. In the present study, we investigated the effects of 15d-PGJ2 on the activity of PTEN, the inhibitor of the phosphoinositide 3-kinase (PI3K)-Akt axis, in human breast cancer (MCF-7) cells. Since the α,β-unsaturated carbonyl moiety in the cyclopentenone ring of 15d-PGJ2 is electrophilic, we hypothesized that 15d-PGJ2-induced Akt phosphorylation might result from the covalent modification and subsequent inactivation of PTEN that has several critical cysteine residues. When treated to MCF-7 cells, 15d-PGJ2 bound to PTEN, and this was abolished in the presence of the thiol-reducing agent dithiothreitol. A mass spectrometric analysis by using recombinant and endogenous PTEN protein revealed that the cysteine 136 residue (Cys136) of PTEN is covalently modified upon treatment with 15d-PGJ2. Notably, the ability of 15d-PGJ2 to covalently bind to PTEN as well as to induce Akt phosphorylation was abolished in the cells expressing a mutant form of PTEN in which Cys136 was replaced by serine (C136S-PTEN). The present study demonstrates for the first time that electrophilic 15d-PGJ2 directly binds to cysteine 136 of PTEN and provides new insight into PTEN loss in cancer progression associated with chronic inflammation. These observations suggest that 15d-PGJ2 can undergo nucleophilic addition to PTEN, presumably at Cys136, thereby inactivating this tumor suppressor protein with concomitant Akt activation.
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Affiliation(s)
- Jinyoung Suh
- Tumor Microenvironment Global Core Research Center and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, South Korea
| | - Do-Hee Kim
- Tumor Microenvironment Global Core Research Center and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, South Korea
| | - Eun-Hee Kim
- College of Pharmacy, CHA University, Pocheon-si 11160, Gyeonggi-do, South Korea
| | - Sin-Aye Park
- Tumor Microenvironment Global Core Research Center and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, South Korea
| | - Jong-Min Park
- College of Pharmacy, CHA University, Pocheon-si 11160, Gyeonggi-do, South Korea
| | - Jeong-Hoon Jang
- Tumor Microenvironment Global Core Research Center and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, South Korea
| | - Su-Jung Kim
- Tumor Microenvironment Global Core Research Center and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, South Korea
| | - Hye-Kyung Na
- Department of Food Science and Biotechnology, College of Knowedge-Based Services Engineering, Sungshin Women's University, Seoul 02844, South Korea
| | - Nam-Doo Kim
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu 41061, South Korea
| | - Nam-Jung Kim
- Department of Pharmacy, Kyung Hee University, Seoul 02453, South Korea
| | - Young Ger Suh
- College of Pharmacy, CHA University, Pocheon-si 11160, Gyeonggi-do, South Korea
| | - Young-Joon Surh
- Tumor Microenvironment Global Core Research Center and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, South Korea.
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Kim N, Yoo HS, Ju YJ, Oh MS, Lee KT, Inn KS, Kim NJ, Lee JK. Synthetic 3',4'-Dihydroxyflavone Exerts Anti-Neuroinflammatory Effects in BV2 Microglia and a Mouse Model. Biomol Ther (Seoul) 2018; 26:210-217. [PMID: 29462849 PMCID: PMC5839500 DOI: 10.4062/biomolther.2018.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 01/22/2018] [Accepted: 01/23/2018] [Indexed: 12/13/2022] Open
Abstract
Neuroinflammation is an immune response within the central nervous system against various proinflammatory stimuli. Abnormal activation of this response contributes to neurodegenerative diseases such as Parkinson disease, Alzheimer’s disease, and Huntington disease. Therefore, pharmacologic modulation of abnormal neuroinflammation is thought to be a promising approach to amelioration of neurodegenerative diseases. In this study, we evaluated the synthetic flavone derivative 3′,4′-dihydroxyflavone, investigating its anti-neuroinflammatory activity in BV2 microglial cells and in a mouse model. In BV2 microglial cells, 3′,4′-dihydroxyflavone successfully inhibited production of chemokines such as nitric oxide and prostaglandin E2 and proinflammatory cytokines such as tumor necrosis factor alpha, interleukin 1 beta, and interleukin 6 in BV2 microglia. It also inhibited phosphorylation of mitogen-activated protein kinase (MAPK) and nuclear factor (NF)-κB activation. This indicates that the anti-inflammatory activities of 3′,4′-dihydroxyflavone might be related to suppression of the proinflammatory MAPK and NF-κB signaling pathways. Similar anti-neuroinflammatory activities of the compound were observed in the mouse model. These findings suggest that 3′,4′-dihydroxyflavone is a potential drug candidate for the treatment of microglia-related neuroinflammatory diseases.
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Affiliation(s)
- Namkwon Kim
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Hyung-Seok Yoo
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Yeon-Joo Ju
- Department of Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Myung Sook Oh
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea.,Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Kyung-Tae Lee
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea.,Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Kyung-Soo Inn
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea.,Department of Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Nam-Jung Kim
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jong Kil Lee
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
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Hwang JH, Park JS, Lee E, Bae JY, Song KH, Choe PG, Park WB, Bang JH, Kim ES, Park SW, Kim NJ, Oh M, Kim HB. Active surveillance for carbapenem-resistant Enterobacteriaceae, vancomycin-resistant enterococci and toxigenic Clostridium difficile among patients transferred from long-term care facilities in Korea. J Hosp Infect 2018; 99:487-491. [PMID: 29476883 DOI: 10.1016/j.jhin.2018.02.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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: 12/27/2017] [Accepted: 02/15/2018] [Indexed: 11/28/2022]
Abstract
A 10-month active surveillance study was conducted to assess carriage of carbapenemase-producing Enterobacteriaceae (CPE), vancomycin-resistant enterococci (VRE) and toxigenic Clostridium difficile colonization among patients transferred to hospital from long-term care facilities (LTCFs). Four (1.4%) patients with carbapenem-resistant Enterobacteriaceae (none of which were CPE), 59 (21%) patients with VRE and 20 (7.1%) patients colonized with toxigenic C. difficile were identified from 282 rectal specimens. There was no outbreak of VRE infection during the study period. The low prevalence of CPE carriage suggests that screening all admissions from LTCFs for CPE would not be cost-effective, and that screening and use of contact precautions for VRE should be reconsidered.
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Affiliation(s)
- J-H Hwang
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - J S Park
- Department of Laboratory Medicine, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - E Lee
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - J Y Bae
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - K-H Song
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea; Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - P G Choe
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - W B Park
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - J H Bang
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - E S Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea; Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - S W Park
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - N J Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - M Oh
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - H B Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea; Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea.
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Kang SP, Kim NJ, Kwon HY, Choi JW, Min BC, Won C. The spin structures of interlayer coupled magnetic films with opposite chirality. Sci Rep 2018; 8:2361. [PMID: 29402938 PMCID: PMC5799310 DOI: 10.1038/s41598-018-20800-8] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 01/22/2018] [Indexed: 11/21/2022] Open
Abstract
Using Monte-Carlo simulations and micromagnetic simulations, we reveal how the spin structural correlation and the skyrmion dynamics are affected by the interlayer coupling in a chiral magnetic bilayer system, in which the two layers have opposite chirality. The interaction through interlayer coupling between chiral magnetic structures influences the static and dynamics properties profoundly. The competition between the Dzyaloshinskii-Moriya interaction and the interlayer interaction allows multiple magnetic structures to be energetically stable, which includes sole skyrmion states (skyrmion appears in only one of the layers) and skyrmion pair states (coupled skyrmions in top and bottom layers). When current driven spin transfer torques are applied to each state, the sole skyrmion state is mainly propelled by a spin transfer torque causing the skyrmion hall effect, but the skyrmion pair state is propelled by a torque from skyrmion-skyrmion interaction and not influenced by the skyrmion hall effect. Also upon application of an external magnetic field, we found the skyrmions in a skyrmion pair state extinguish in an exclusive way, as the annihilation of a skyrmion in one of the layers stabilizes the once paired skyrmion in the other layer, i.e. the skyrmion lattice sites have only one skyrmion in either layer.
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Affiliation(s)
- S P Kang
- Department of Physics, Kyung Hee University, Seoul, 02447, Korea
| | - N J Kim
- Department of Physics, Kyung Hee University, Seoul, 02447, Korea
| | - H Y Kwon
- Department of Physics, Kyung Hee University, Seoul, 02447, Korea
| | - J W Choi
- Center for Spintronics Research, Korea Institute of Science and Technology, Seoul, 02792, Korea
| | - B C Min
- Center for Spintronics Research, Korea Institute of Science and Technology, Seoul, 02792, Korea
| | - C Won
- Department of Physics, Kyung Hee University, Seoul, 02447, Korea.
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Sun SB, Sen S, Kim NJ, Magliery TJ, Schultz PG, Wang F. Retraction of "Mutational Analysis of 48G7 Reveals that Somatic Hypermutation Affects Both Antibody Stability and Binding Affinity". J Am Chem Soc 2018; 140:1976. [PMID: 29376652 DOI: 10.1021/jacs.7b08106] [Citation(s) in RCA: 2] [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: 11/28/2022]
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Cho JM, Yun SM, Choi YH, Heo J, Kim NJ, Kim SH, Kim EH. Xanthohumol prevents dextran sulfate sodium-induced colitis via inhibition of IKKβ/NF-κB signaling in mice. Oncotarget 2017; 9:866-880. [PMID: 29416662 PMCID: PMC5787519 DOI: 10.18632/oncotarget.23183] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 11/15/2017] [Indexed: 01/13/2023] Open
Abstract
Xanthohumol (XN), a prenylated chalcone isolated from the hop plant, has been reported to exhibit multiple biological functions including anti-inflammation. However, the pharmacological function of XN on colitis remains unknown. In this study, we investigated the anti-inflammatory effect of synthesized XN and molecular mechanism on dextran sulfate sodium (DSS)-induced experimental colitis. XN attenuated the colitis symptoms along with the prevention of colonic lesions after DSS challenge. XN inhibited the production of pro-inflammatory cytokines, oxidative stress and cyclooxygenase-2 expression in DSS-treated mice. Moreover, XN inhibited the phosphorylation of IκBα, the nuclear translocation of NF-κB subunits and the transcriptional activity of NF-κB in vivo and in vitro. In contrast to XN, isoXN showed much less effects on the kinase activity of IKKβ and IκBα phosphorylation induced by XN in this study, suggesting that an electrophilic carbon center present in XN is critical for the anti-inflammation in colitis, especially inhibition of IKKβ/NF-κB signaling pathway. Consistently, our docking analysis revealed that XN could bind to the active site, presumably at the Cys99 of IKKβ. Taken together, these findings demonstrate a new function of XN to inhibit IKKβ/NF-κB signaling, suggesting XN could be the potential therapeutic agent for the prevention of colitis.
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Affiliation(s)
- Jae-Min Cho
- College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Seongnam 13488, Korea
| | - Sun-Mi Yun
- College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Seongnam 13488, Korea
| | - Young-Ho Choi
- College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Seongnam 13488, Korea
| | - Jinyuk Heo
- College of Pharmacy, Kyung Hee University, Seoul 02447, Korea
| | - Nam-Jung Kim
- College of Pharmacy, Kyung Hee University, Seoul 02447, Korea
| | - Seok-Ho Kim
- College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Seongnam 13488, Korea
| | - Eun-Hee Kim
- College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Seongnam 13488, Korea
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Hong D, Park MJ, Jang EH, Jung B, Kim NJ, Kim JH. Hispolon as an inhibitor of TGF-β-induced epithelial-mesenchymal transition in human epithelial cancer cells by co-regulation of TGF-β-Snail/Twist axis. Oncol Lett 2017; 14:4866-4872. [PMID: 29085494 DOI: 10.3892/ol.2017.6789] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 02/13/2017] [Indexed: 01/11/2023] Open
Abstract
Hispolon (HPL), isolated from Phellinus linteus, has been used to treat various types of pathology, including inflammation, gastroenteric disorders, lymphatic diseases and numerous cancer subtypes. HPL has previously been reported to demonstrate a significant therapeutic efficacy against various types of cancer cells, including melanoma, leukemia, hepatocarcinoma, bladder and gastric cancer cells. However, its potential role in the epithelial-mesenchymal transition (EMT) has not been demonstrated. The present study investigated the effects of HPL on the EMT. Transforming growth factor β (TGF-β) induced enhanced cell migration and invasion, EMT-associated phenotypic changes. In the present study, HPL recovered the reduction of E-cadherin expression level in TGF-β treated cancer cells, which was regulated by the expression of Snail and Twist. HPL downregulated Snail and Twist, an effect that was enhanced by TGF-β. These findings provide novel evidence that HPL suppresses cancer cell migration and invasion by inhibiting EMT. Therefore, HPL may be a potent anticancer agent, inhibiting metastasis.
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Affiliation(s)
- Darong Hong
- Department of Life and Nanopharmaceutical Science, Graduate School, Kyung Hee University, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Min-Ju Park
- Department of Pharmacy, Graduate School, Kyung Hee University, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Eun Hyang Jang
- Department of Pharmacy, Graduate School, Kyung Hee University, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Bom Jung
- Department of Pharmacy, Graduate School, Kyung Hee University, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Nam-Jung Kim
- Department of Pharmacy, Graduate School, Kyung Hee University, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Jong-Ho Kim
- Department of Pharmacy, Graduate School, Kyung Hee University, Dongdaemun-gu, Seoul 02447, Republic of Korea
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Lee JK, Kim NJ. Recent Advances in the Inhibition of p38 MAPK as a Potential Strategy for the Treatment of Alzheimer's Disease. Molecules 2017; 22:molecules22081287. [PMID: 28767069 PMCID: PMC6152076 DOI: 10.3390/molecules22081287] [Citation(s) in RCA: 219] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 07/27/2017] [Accepted: 08/01/2017] [Indexed: 12/11/2022] Open
Abstract
P38 mitogen-activated protein kinase (MAPK) is a crucial target for chronic inflammatory diseases. Alzheimer’s disease (AD) is characterized by the presence of amyloid plaques and neurofibrillary tangles in the brain, as well as neurodegeneration, and there is no known cure. Recent studies on the underlying biology of AD in cellular and animal models have indicated that p38 MAPK is capable of orchestrating diverse events related to AD, such as tau phosphorylation, neurotoxicity, neuroinflammation and synaptic dysfunction. Thus, the inhibition of p38 MAPK is considered a promising strategy for the treatment of AD. In this review, we summarize recent advances in the targeting of p38 MAPK as a potential strategy for the treatment of AD and envision possibilities of p38 MAPK inhibitors as a fundamental therapeutics for AD.
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Affiliation(s)
- Jong Kil Lee
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea.
| | - Nam-Jung Kim
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea.
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Bae JY, Kim CJ, Kim UJ, Song KH, Kim ES, Kang SJ, Oh MD, Park KH, Kim NJ. Concordance of results of blood and tissue cultures from patients with pyogenic spondylitis: a retrospective cohort study. Clin Microbiol Infect 2017; 24:279-282. [PMID: 28698035 DOI: 10.1016/j.cmi.2017.07.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 06/06/2017] [Accepted: 07/03/2017] [Indexed: 01/18/2023]
Abstract
OBJECTIVES To investigate the concordance of results of blood and tissue cultures in patients with pyogenic spondylitis. METHODS We searched for patients with pyogenic spondylitis in whom microorganisms were isolated from both blood and tissue cultures by retrospective review of medical records in three tertiary university-affiliated hospitals between January 2005 and December 2015. The species and antimicrobial susceptibility patterns of isolates from blood and tissue cultures were compared. RESULTS Among 141 patients with pyogenic spondylitis in whom microorganisms were isolated from both blood and tissue cultures, the species of blood and tissue isolates were identical in 135 patients (95.7%, 135/141). Excluding the four anaerobic isolates, we investigated antimicrobial susceptibility patterns of 131 isolates of the same species from blood and tissue cultures. Antibiotic susceptibility patterns were identical in 128 patients (97.7%, 128/131). The most common isolates were Staphylococcus aureus (86 patients; 85 concordant and one discordant), followed by streptococcus (24 patients; 22 concordant and two discordant), and Escherichia coli (eight patients; all concordant). CONCLUSIONS We suggest that a positive blood culture from patients with pyogenic spondylitis could preclude the need for additional tissue cultures, especially when S. aureus and streptococcus grew in blood cultures.
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Affiliation(s)
- J Y Bae
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - C-J Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - U J Kim
- Department of Infectious Diseases, Chonnam National University Medical School, Gwang-ju, Republic of Korea
| | - K-H Song
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - E S Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - S J Kang
- Department of Infectious Diseases, Chonnam National University Medical School, Gwang-ju, Republic of Korea
| | - M-D Oh
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - K-H Park
- Department of Infectious Diseases, Chonnam National University Medical School, Gwang-ju, Republic of Korea.
| | - N J Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea.
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An JY, Lee HH, Shin JS, Yoo HS, Park JS, Son SH, Kim SW, Yu J, Lee J, Lee KT, Kim NJ. Identification and structure activity relationship of novel flavone derivatives that inhibit the production of nitric oxide and PGE 2 in LPS-induced RAW 264.7 cells. Bioorg Med Chem Lett 2017; 27:2613-2616. [DOI: 10.1016/j.bmcl.2017.03.057] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 03/07/2017] [Accepted: 03/22/2017] [Indexed: 01/08/2023]
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Preya UH, Lee KT, Kim NJ, Lee JY, Jang DS, Choi JH. The natural terthiophene α-terthienylmethanol induces S phase cell cycle arrest of human ovarian cancer cells via the generation of ROS stress. Chem Biol Interact 2017; 272:72-79. [PMID: 28506552 DOI: 10.1016/j.cbi.2017.05.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 04/19/2017] [Accepted: 05/11/2017] [Indexed: 12/11/2022]
Abstract
Ovarian cancer is the most lethal gynecological malignancy worldwide. Thiophenes such as terthiophene have been shown to have anti-tumor effects on several cancer cell lines, including ovarian cancer cells. However, the underlying mechanisms behind the anti-proliferative effect of thiophenes are poorly understood. In this study, we investigated the molecular mechanisms underlying the anti-proliferative effect of α-terthienylmethanol, a terthiophene isolated from Eclipta prostrata (False Daisy), on human ovarian cancer cells. We found that α-terthienylmethanol is a more potent inhibitor of cell growth than is cisplatin in human ovarian cancer cells. α-Terthienylmethanol induces cell cycle arrest in ovarian cancer cells, as shown by the accumulation of cells in S phase. In addition, α-terthienylmethanol induced a change in S phase-related proteins cyclin A, cyclin-dependent kinase 2, and cyclin D2. Knockdown of cyclin A using specific siRNAs significantly compromised α-terthienylmethanol-induced S phase arrest. We further demonstrated that α-terthienylmethanol induced an increase in intracellular ROS, and the antioxidant N-acetyl-l-cysteine significantly reversed the S phase arrest induced by α-terthienylmethanol. Moreover, α-terthienylmethanol significantly increased the levels of p-H2AX, a DNA damage marker. These results suggest that α-terthienylmethanol inhibits the growth of human ovarian cancer cells by S phase cell cycle arrest via induction of ROS stress and DNA damage.
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Affiliation(s)
- Umma Hafsa Preya
- Department of Life and Nanopharamceutical Sciences, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemoon-gu, Seoul 02447, South Korea
| | - Kyung-Tae Lee
- Department of Life and Nanopharamceutical Sciences, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemoon-gu, Seoul 02447, South Korea; College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemoon-gu, Seoul 02447, South Korea
| | - Nam-Jung Kim
- College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemoon-gu, Seoul 02447, South Korea
| | - Jung-Yun Lee
- Department of Plant Science, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, South Korea
| | - Dae Sik Jang
- Department of Life and Nanopharamceutical Sciences, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemoon-gu, Seoul 02447, South Korea; College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemoon-gu, Seoul 02447, South Korea
| | - Jung-Hye Choi
- Department of Life and Nanopharamceutical Sciences, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemoon-gu, Seoul 02447, South Korea; College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemoon-gu, Seoul 02447, South Korea.
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Yi CM, Yu J, Kim H, Lee NR, Kim SW, Lee NJ, Lee J, Seong J, Kim NJ, Inn KS. Identification of actin as a direct proteomic target of berberine using an affinity-based chemical probe and elucidation of its modulatory role in actin assembly. Chem Commun (Camb) 2017; 53:7045-7047. [DOI: 10.1039/c7cc02789c] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Actin was identified as a direct target of berberine via a chemoproteomic approach and its assembly was modulated by berberine.
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