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Milioto C, Carcolé M, Giblin A, Coneys R, Attrebi O, Ahmed M, Harris SS, Lee BI, Yang M, Ellingford RA, Nirujogi RS, Biggs D, Salomonsson S, Zanovello M, de Oliveira P, Katona E, Glaria I, Mikheenko A, Geary B, Udine E, Vaizoglu D, Anoar S, Jotangiya K, Crowley G, Smeeth DM, Adams ML, Niccoli T, Rademakers R, van Blitterswijk M, Devoy A, Hong S, Partridge L, Coyne AN, Fratta P, Alessi DR, Davies B, Busche MA, Greensmith L, Fisher EMC, Isaacs AM. PolyGR and polyPR knock-in mice reveal a conserved neuroprotective extracellular matrix signature in C9orf72 ALS/FTD neurons. Nat Neurosci 2024; 27:643-655. [PMID: 38424324 PMCID: PMC11001582 DOI: 10.1038/s41593-024-01589-4] [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: 02/08/2023] [Accepted: 01/24/2024] [Indexed: 03/02/2024]
Abstract
Dipeptide repeat proteins are a major pathogenic feature of C9orf72 amyotrophic lateral sclerosis (C9ALS)/frontotemporal dementia (FTD) pathology, but their physiological impact has yet to be fully determined. Here we generated C9orf72 dipeptide repeat knock-in mouse models characterized by expression of 400 codon-optimized polyGR or polyPR repeats, and heterozygous C9orf72 reduction. (GR)400 and (PR)400 knock-in mice recapitulate key features of C9ALS/FTD, including cortical neuronal hyperexcitability, age-dependent spinal motor neuron loss and progressive motor dysfunction. Quantitative proteomics revealed an increase in extracellular matrix (ECM) proteins in (GR)400 and (PR)400 spinal cord, with the collagen COL6A1 the most increased protein. TGF-β1 was one of the top predicted regulators of this ECM signature and polyGR expression in human induced pluripotent stem cell neurons was sufficient to induce TGF-β1 followed by COL6A1. Knockdown of TGF-β1 or COL6A1 orthologues in polyGR model Drosophila exacerbated neurodegeneration, while expression of TGF-β1 or COL6A1 in induced pluripotent stem cell-derived motor neurons of patients with C9ALS/FTD protected against glutamate-induced cell death. Altogether, our findings reveal a neuroprotective and conserved ECM signature in C9ALS/FTD.
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Affiliation(s)
- Carmelo Milioto
- UK Dementia Research Institute, University College London, London, UK
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
| | - Mireia Carcolé
- UK Dementia Research Institute, University College London, London, UK
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
| | - Ashling Giblin
- UK Dementia Research Institute, University College London, London, UK
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
- UCL Institute of Healthy Ageing, Department of Genetics, Evolution and Environment, University College London, London, UK
| | - Rachel Coneys
- UK Dementia Research Institute, University College London, London, UK
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
| | - Olivia Attrebi
- UK Dementia Research Institute, University College London, London, UK
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
| | - Mhoriam Ahmed
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, London, UK
| | - Samuel S Harris
- UK Dementia Research Institute, University College London, London, UK
| | - Byung Il Lee
- UK Dementia Research Institute, University College London, London, UK
| | - Mengke Yang
- UK Dementia Research Institute, University College London, London, UK
| | | | - Raja S Nirujogi
- Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA
- Medical Research Council (MRC) Protein Phosphorylation and Ubiquitylation Unit, School of Life Sciences, University of Dundee, Dundee, UK
| | - Daniel Biggs
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Sally Salomonsson
- UK Dementia Research Institute, University College London, London, UK
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
| | - Matteo Zanovello
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, London, UK
| | - Paula de Oliveira
- UK Dementia Research Institute, University College London, London, UK
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
| | - Eszter Katona
- UK Dementia Research Institute, University College London, London, UK
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
| | - Idoia Glaria
- UK Dementia Research Institute, University College London, London, UK
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
- Research Support Service, Institute of Agrobiotechnology, CSIC-Government of Navarra, Mutilva, Spain
| | - Alla Mikheenko
- UK Dementia Research Institute, University College London, London, UK
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, London, UK
| | - Bethany Geary
- Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA
- Medical Research Council (MRC) Protein Phosphorylation and Ubiquitylation Unit, School of Life Sciences, University of Dundee, Dundee, UK
| | - Evan Udine
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA
| | - Deniz Vaizoglu
- UK Dementia Research Institute, University College London, London, UK
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
| | - Sharifah Anoar
- UCL Institute of Healthy Ageing, Department of Genetics, Evolution and Environment, University College London, London, UK
| | - Khrisha Jotangiya
- UK Dementia Research Institute, University College London, London, UK
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
| | - Gerard Crowley
- UK Dementia Research Institute, University College London, London, UK
| | - Demelza M Smeeth
- UK Dementia Research Institute, University College London, London, UK
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
| | - Mirjam L Adams
- UK Dementia Research Institute, University College London, London, UK
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK
| | - Teresa Niccoli
- UCL Institute of Healthy Ageing, Department of Genetics, Evolution and Environment, University College London, London, UK
| | - Rosa Rademakers
- VIB Center for Molecular Neurology, University of Antwerp, Antwerp, Belgium
- Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
| | | | - Anny Devoy
- UK Dementia Research Institute, Maurice Wohl Clinical Neuroscience Institute, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Soyon Hong
- UK Dementia Research Institute, University College London, London, UK
| | - Linda Partridge
- UCL Institute of Healthy Ageing, Department of Genetics, Evolution and Environment, University College London, London, UK
| | - Alyssa N Coyne
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Brain Science Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Pietro Fratta
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, London, UK
- UCL Queen Square Motor Neuron Disease Centre, UCL Queen Square Institute of Neurology, London, UK
| | - Dario R Alessi
- Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD, USA
- Medical Research Council (MRC) Protein Phosphorylation and Ubiquitylation Unit, School of Life Sciences, University of Dundee, Dundee, UK
| | - Ben Davies
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
- Francis Crick Institute, London, UK
| | - Marc Aurel Busche
- UK Dementia Research Institute, University College London, London, UK
| | - Linda Greensmith
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, London, UK
- UCL Queen Square Motor Neuron Disease Centre, UCL Queen Square Institute of Neurology, London, UK
| | - Elizabeth M C Fisher
- Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, London, UK.
- UCL Queen Square Motor Neuron Disease Centre, UCL Queen Square Institute of Neurology, London, UK.
| | - Adrian M Isaacs
- UK Dementia Research Institute, University College London, London, UK.
- Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, London, UK.
- UCL Queen Square Motor Neuron Disease Centre, UCL Queen Square Institute of Neurology, London, UK.
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Kim JH, Pandit N, Yoo M, Park TH, Choi JU, Park CH, Jung KY, Lee BI. Crystal structure of [1,2,4]triazolo[4,3-b]pyridazine derivatives as BRD4 bromodomain inhibitors and structure-activity relationship study. Sci Rep 2023; 13:10805. [PMID: 37402749 DOI: 10.1038/s41598-023-37527-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 06/22/2023] [Indexed: 07/06/2023] Open
Abstract
BRD4 contains two tandem bromodomains (BD1 and BD2) that recognize acetylated lysine for epigenetic reading, and these bromodomains are promising therapeutic targets for treating various diseases, including cancers. BRD4 is a well-studied target, and many chemical scaffolds for inhibitors have been developed. Research on the development of BRD4 inhibitors against various diseases is actively being conducted. Herein, we propose a series of [1,2,4]triazolo[4,3-b]pyridazine derivatives as bromodomain inhibitors with micromolar IC50 values. We characterized the binding modes by determining the crystal structures of BD1 in complex with four selected inhibitors. Compounds containing [1,2,4] triazolo[4,3-b]pyridazine derivatives offer promising starting molecules for designing potent BRD4 BD inhibitors.
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Affiliation(s)
- Jung-Hoon Kim
- Research Institute, National Cancer Center, Goyang, Gyeonggi, 10408, Republic of Korea
- Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang, Gyeonggi, 10408, Republic of Korea
| | - Navin Pandit
- Department of Medicinal Chemistry and Pharmacology, University of Science and Technology, Daejeon, 34113, Republic of Korea
| | - Miyoun Yoo
- Therapeutics and Biotechnology Division, Korea Research Institute of Chemical Technology, Daejeon, 34114, Republic of Korea
| | - Tae Hyun Park
- Department of Anesthesiology, Weill Cornell Medical College, New York, NY, 10065, USA
| | - Ji U Choi
- Department of Medicinal Chemistry and Pharmacology, University of Science and Technology, Daejeon, 34113, Republic of Korea
- Therapeutics and Biotechnology Division, Korea Research Institute of Chemical Technology, Daejeon, 34114, Republic of Korea
| | - Chi Hoon Park
- Department of Medicinal Chemistry and Pharmacology, University of Science and Technology, Daejeon, 34113, Republic of Korea.
- Therapeutics and Biotechnology Division, Korea Research Institute of Chemical Technology, Daejeon, 34114, Republic of Korea.
| | - Kwan-Young Jung
- Department of Medicinal Chemistry and Pharmacology, University of Science and Technology, Daejeon, 34113, Republic of Korea.
- Therapeutics and Biotechnology Division, Korea Research Institute of Chemical Technology, Daejeon, 34114, Republic of Korea.
| | - Byung Il Lee
- Research Institute, National Cancer Center, Goyang, Gyeonggi, 10408, Republic of Korea.
- Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang, Gyeonggi, 10408, Republic of Korea.
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Bae SH, Kim JH, Park TH, Lee K, Lee BI, Jang H. BMS794833 inhibits macrophage efferocytosis by directly binding to MERTK and inhibiting its activity. Exp Mol Med 2022; 54:1450-1460. [PMID: 36056187 PMCID: PMC9534909 DOI: 10.1038/s12276-022-00840-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/13/2022] [Accepted: 06/24/2022] [Indexed: 06/15/2023] Open
Abstract
Myeloid epithelial reproductive proto-oncogene tyrosine kinase (MERTK) plays an essential role in modulating cancer immune tolerance by regulating macrophage efferocytosis. Studies are underway to develop small-molecule chemicals that inhibit MERTK as cancer immunotherapeutic agents, but these efforts are in their early stages. This study identified BMS794833, whose primary targets are MET and VEGFR2, as a potent MERTK inhibitor and developed a real-time efferocytosis monitoring system. The X-ray cocrystal structure revealed that BMS794833 was in contact with the ATP-binding pocket and the allosteric back pocket, rendering MERTK inactive. Homogeneous time-resolved fluorescence kinetic and Western blotting analyses showed that BMS794833 competitively inhibited MERTK activity in vitro and inhibited the autophosphorylation of MERTK in macrophages. We developed a system to monitor MERTK-dependent efferocytosis in real time, and using this system, we confirmed that BMS794833 significantly inhibited the efferocytosis of differentiated macrophages. Finally, BMS794833 significantly inhibited efferocytosis in vivo in a mouse model. These data show that BMS794833 is a type II MERTK inhibitor that regulates macrophage efferocytosis. In addition, the real-time efferocytosis monitoring technology developed in this study has great potential for future applications.
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Affiliation(s)
- Seung-Hyun Bae
- Reasearch Institute, National Cancer Center, Goyang, 10408, Republic of Korea
| | - Jung-Hoon Kim
- Reasearch Institute, National Cancer Center, Goyang, 10408, Republic of Korea
- Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang, 10408, Republic of Korea
| | - Tae Hyun Park
- Department of Anesthesiology, Weill Cornell Medical College, New York, NY, 10065, USA
| | - Kyeong Lee
- College of Pharmacy, Dongguk University-Seoul, Goyang, 10326, Republic of Korea
| | - Byung Il Lee
- Reasearch Institute, National Cancer Center, Goyang, 10408, Republic of Korea.
- Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang, 10408, Republic of Korea.
| | - Hyonchol Jang
- Reasearch Institute, National Cancer Center, Goyang, 10408, Republic of Korea.
- Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang, 10408, Republic of Korea.
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Yeo HK, Park TH, Kim HY, Jang H, Lee J, Hwang GS, Ryu SE, Park SH, Song HK, Ban HS, Yoon HJ, Lee BI. Phospholipid transfer function of PTPIP51 at mitochondria-associated ER membranes. EMBO Rep 2021; 22:e51323. [PMID: 33938112 DOI: 10.15252/embr.202051323] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 02/24/2021] [Accepted: 03/22/2021] [Indexed: 01/08/2023] Open
Abstract
In eukaryotic cells, mitochondria are closely tethered to the endoplasmic reticulum (ER) at sites called mitochondria-associated ER membranes (MAMs). Ca2+ ion and phospholipid transfer occurs at MAMs to support diverse cellular functions. Unlike those in yeast, the protein complexes involved in phospholipid transfer at MAMs in humans have not been identified. Here, we determine the crystal structure of the tetratricopeptide repeat domain of PTPIP51 (PTPIP51_TPR), a mitochondrial protein that interacts with the ER-anchored VAPB protein at MAMs. The structure of PTPIP51_TPR shows an archetypal TPR fold, and an electron density map corresponding to an unidentified lipid-like molecule probably derived from the protein expression host is found in the structure. We reveal functions of PTPIP51 in phospholipid binding/transfer, particularly of phosphatidic acid, in vitro. Depletion of PTPIP51 in cells reduces the mitochondrial cardiolipin level. Additionally, we confirm that the PTPIP51-VAPB interaction is mediated by the FFAT-like motif of PTPIP51 and the MSP domain of VAPB. Our findings suggest that PTPIP51 is a phospholipid transfer protein with a MAM-tethering function.
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Affiliation(s)
- Hyun Ku Yeo
- Research Institute, National Cancer Center, Goyang-si, Korea
| | - Tae Hyun Park
- Research Institute, National Cancer Center, Goyang-si, Korea.,Department of Bioengineering, Hanyang University, Seoul, Korea
| | - Hee Yeon Kim
- Research Institute, National Cancer Center, Goyang-si, Korea
| | - Hyonchol Jang
- Research Institute, National Cancer Center, Goyang-si, Korea.,Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang-si, Korea
| | - Jueun Lee
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, Seoul, Korea
| | - Geum-Sook Hwang
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, Seoul, Korea.,Department of Chemistry and Nano Science, Ewha Womans University, Seoul, Korea
| | - Seong Eon Ryu
- Department of Bioengineering, Hanyang University, Seoul, Korea
| | - Si Hoon Park
- Department of Life Sciences, Korea University, Seoul, Korea
| | - Hyun Kyu Song
- Department of Life Sciences, Korea University, Seoul, Korea
| | - Hyun Seung Ban
- Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - Hye-Jin Yoon
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul, Korea
| | - Byung Il Lee
- Research Institute, National Cancer Center, Goyang-si, Korea.,Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang-si, Korea
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Harris SS, Schwerd-Kleine T, Lee BI, Busche MA. The Reciprocal Interaction Between Sleep and Alzheimer's Disease. Adv Exp Med Biol 2021; 1344:169-188. [PMID: 34773232 DOI: 10.1007/978-3-030-81147-1_10] [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] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
It is becoming increasingly recognized that patients with a variety of neurodegenerative diseases exhibit disordered sleep/wake patterns. While sleep impairments have typically been thought of as sequelae of underlying neurodegenerative processes in sleep-wake cycle regulating brain regions, including the brainstem, hypothalamus, and basal forebrain, emerging evidence now indicates that sleep deficits may also act as pathophysiological drivers of brain-wide disease progression. Specifically, recent work has indicated that impaired sleep can impact on neuronal activity, brain clearance mechanisms, pathological build-up of proteins, and inflammation. Altered sleep patterns may therefore be novel (potentially reversible) dynamic functional markers of proteinopathies and modifiable targets for early therapeutic intervention using non-invasive stimulation and behavioral techniques. Here we highlight research describing a potentially reciprocal interaction between impaired sleep and circadian patterns and the accumulation of pathological signs and features in Alzheimer's disease, the most prevalent neurodegenerative disease in the elderly.
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Affiliation(s)
| | | | - Byung Il Lee
- UK Dementia Research Institute at UCL, London, UK
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Shin NY, Lee BD, Kang JH, Kim HR, Oh DH, Lee BI, Kim SH, Lee MS, Heo MS. Evaluation of the clinical efficacy of a TW3-based fully automated bone age assessment system using deep neural networks. Imaging Sci Dent 2020; 50:237-243. [PMID: 33005581 PMCID: PMC7506088 DOI: 10.5624/isd.2020.50.3.237] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 05/15/2020] [Accepted: 05/21/2020] [Indexed: 11/25/2022] Open
Abstract
Purpose The aim of this study was to evaluate the clinical efficacy of a Tanner-Whitehouse 3 (TW3)-based fully automated bone age assessment system on hand-wrist radiographs of Korean children and adolescents. Materials and Methods Hand-wrist radiographs of 80 subjects (40 boys and 40 girls, 7–15 years of age) were collected. The clinical efficacy was evaluated by comparing the bone ages that were determined using the system with those from the reference standard produced by 2 oral and maxillofacial radiologists. Comparisons were conducted using the paired t-test and simple regression analysis. Results The bone ages estimated with this bone age assessment system were not significantly different from those obtained with the reference standard (P>0.05) and satisfied the equivalence criterion of 0.6 years within the 95% confidence interval (− 0.07 to 0.22), demonstrating excellent performance of the system. Similarly, in the comparisons of gender subgroups, no significant difference in bone age between the values produced by the system and the reference standard was observed (P>0.05 for both boys and girls). The determination coefficients obtained via regression analysis were 0.962, 0.945, and 0.952 for boys, girls, and overall, respectively (P=0.000); hence, the radiologist-determined bone ages and the system-determined bone ages were strongly correlated. Conclusion This TW3-based system can be effectively used for bone age assessment based on hand-wrist radiographs of Korean children and adolescents.
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Affiliation(s)
- Nan-Young Shin
- Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea
| | - Byoung-Dai Lee
- Center for Artificial Intelligence in Medicine and Imaging, HealthHub, Seoul, Korea.,Division of Computer Science and Engineering, Kyonggi University, Suwon, Korea
| | - Ju-Hee Kang
- Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea
| | - Hye-Rin Kim
- Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea
| | - Dong Hyo Oh
- Center for Artificial Intelligence in Medicine and Imaging, HealthHub, Seoul, Korea
| | - Byung Il Lee
- Center for Artificial Intelligence in Medicine and Imaging, HealthHub, Seoul, Korea
| | - Sung Hyun Kim
- Center for Artificial Intelligence in Medicine and Imaging, HealthHub, Seoul, Korea
| | - Mu Sook Lee
- Department of Radiology, Keimyung University, Dongsan Hospital, Daegu, Korea
| | - Min-Suk Heo
- Department of Oral and Maxillofacial Radiology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea
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Kim DK, Song B, Han S, Jang H, Bae SH, Kim HY, Lee SH, Lee S, Kim JK, Kim HS, Hong KM, Lee BI, Youn HD, Kim SY, Kang SW, Jang H. Phosphorylation of OCT4 Serine 236 Inhibits Germ Cell Tumor Growth by Inducing Differentiation. Cancers (Basel) 2020; 12:cancers12092601. [PMID: 32932964 PMCID: PMC7565739 DOI: 10.3390/cancers12092601] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 09/09/2020] [Accepted: 09/09/2020] [Indexed: 02/06/2023] Open
Abstract
Simple Summary Octamer-binding transcription factor 4 (OCT4) plays an important role in early embryonic development, but is rarely expressed in adults. However, in many cancer cells, this gene is re-expressed, making the cancer malignant. This present study revealed that inhibiting OCT4 transcriptional activity induces cancer cell differentiation and growth retardation. Specifically, when the phosphorylation of OCT4 serine 236 increases by interfering with the binding of protein phosphatase 1 (PP1) to OCT4, OCT4 loses its transcriptional activity and cancer cells differentiate. Therefore, this study presents the basis for the development of protein-protein interaction inhibitors that inhibit the binding of OCT4 and PP1 for cancer treatment. Abstract Octamer-binding transcription factor 4 (Oct4) plays an important role in maintaining pluripotency in embryonic stem cells and is closely related to the malignancies of various cancers. Although posttranslational modifications of Oct4 have been widely studied, most of these have not yet been fully characterized, especially in cancer. In this study, we investigated the role of phosphorylation of serine 236 of OCT4 [OCT4 (S236)] in human germ cell tumors (GCTs). OCT4 was phosphorylated at S236 in a cell cycle-dependent manner in a patient sample and GCT cell lines. The substitution of endogenous OCT4 by a mimic of phosphorylated OCT4 with a serine-to-aspartate mutation at S236 (S236D) resulted in tumor cell differentiation, growth retardation, and inhibition of tumor sphere formation. GCT cells expressing OCT4 S236D instead of endogenous OCT4 were similar to cells with OCT4 depletion at the mRNA transcript level as well as in the phenotype. OCT4 S236D also induced tumor cell differentiation and growth retardation in mouse xenograft experiments. Inhibition of protein phosphatase 1 by chemicals or short hairpin RNAs increased phosphorylation at OCT4 (S236) and resulted in the differentiation of GCTs. These results reveal the role of OCT4 (S236) phosphorylation in GCTs and suggest a new strategy for suppressing OCT4 in cancer.
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Affiliation(s)
- Dong Keon Kim
- Research Institute, National Cancer Center, Goyang 10408, Korea; (D.K.K.); (B.S.); (S.H.); (H.J.); (S.-H.B.); (H.Y.K.); (S.-H.L.); (S.L.); (J.K.K.); (K.-M.H.); (B.I.L.); (S.-Y.K.)
| | - Bomin Song
- Research Institute, National Cancer Center, Goyang 10408, Korea; (D.K.K.); (B.S.); (S.H.); (H.J.); (S.-H.B.); (H.Y.K.); (S.-H.L.); (S.L.); (J.K.K.); (K.-M.H.); (B.I.L.); (S.-Y.K.)
- Department of Life Science, Ewha Womans University, Seoul 03760, Korea;
| | - Suji Han
- Research Institute, National Cancer Center, Goyang 10408, Korea; (D.K.K.); (B.S.); (S.H.); (H.J.); (S.-H.B.); (H.Y.K.); (S.-H.L.); (S.L.); (J.K.K.); (K.-M.H.); (B.I.L.); (S.-Y.K.)
| | - Hansol Jang
- Research Institute, National Cancer Center, Goyang 10408, Korea; (D.K.K.); (B.S.); (S.H.); (H.J.); (S.-H.B.); (H.Y.K.); (S.-H.L.); (S.L.); (J.K.K.); (K.-M.H.); (B.I.L.); (S.-Y.K.)
- Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang 10408, Korea
| | - Seung-Hyun Bae
- Research Institute, National Cancer Center, Goyang 10408, Korea; (D.K.K.); (B.S.); (S.H.); (H.J.); (S.-H.B.); (H.Y.K.); (S.-H.L.); (S.L.); (J.K.K.); (K.-M.H.); (B.I.L.); (S.-Y.K.)
- Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang 10408, Korea
| | - Hee Yeon Kim
- Research Institute, National Cancer Center, Goyang 10408, Korea; (D.K.K.); (B.S.); (S.H.); (H.J.); (S.-H.B.); (H.Y.K.); (S.-H.L.); (S.L.); (J.K.K.); (K.-M.H.); (B.I.L.); (S.-Y.K.)
- Department of Life Science, Ewha Womans University, Seoul 03760, Korea;
| | - Seon-Hyeong Lee
- Research Institute, National Cancer Center, Goyang 10408, Korea; (D.K.K.); (B.S.); (S.H.); (H.J.); (S.-H.B.); (H.Y.K.); (S.-H.L.); (S.L.); (J.K.K.); (K.-M.H.); (B.I.L.); (S.-Y.K.)
| | - Seungjin Lee
- Research Institute, National Cancer Center, Goyang 10408, Korea; (D.K.K.); (B.S.); (S.H.); (H.J.); (S.-H.B.); (H.Y.K.); (S.-H.L.); (S.L.); (J.K.K.); (K.-M.H.); (B.I.L.); (S.-Y.K.)
- Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang 10408, Korea
| | - Jong Kwang Kim
- Research Institute, National Cancer Center, Goyang 10408, Korea; (D.K.K.); (B.S.); (S.H.); (H.J.); (S.-H.B.); (H.Y.K.); (S.-H.L.); (S.L.); (J.K.K.); (K.-M.H.); (B.I.L.); (S.-Y.K.)
| | - Han-Seong Kim
- Department of Pathology, Inje University Ilsan Paik Hospital, Goyang 10308, Korea;
| | - Kyeong-Man Hong
- Research Institute, National Cancer Center, Goyang 10408, Korea; (D.K.K.); (B.S.); (S.H.); (H.J.); (S.-H.B.); (H.Y.K.); (S.-H.L.); (S.L.); (J.K.K.); (K.-M.H.); (B.I.L.); (S.-Y.K.)
| | - Byung Il Lee
- Research Institute, National Cancer Center, Goyang 10408, Korea; (D.K.K.); (B.S.); (S.H.); (H.J.); (S.-H.B.); (H.Y.K.); (S.-H.L.); (S.L.); (J.K.K.); (K.-M.H.); (B.I.L.); (S.-Y.K.)
- Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang 10408, Korea
| | - Hong-Duk Youn
- National Creative Research Center for Epigenome Reprogramming Network, Department of Biomedical Sciences, Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul 03080; Korea;
| | - Soo-Youl Kim
- Research Institute, National Cancer Center, Goyang 10408, Korea; (D.K.K.); (B.S.); (S.H.); (H.J.); (S.-H.B.); (H.Y.K.); (S.-H.L.); (S.L.); (J.K.K.); (K.-M.H.); (B.I.L.); (S.-Y.K.)
| | - Sang Won Kang
- Department of Life Science, Ewha Womans University, Seoul 03760, Korea;
| | - Hyonchol Jang
- Research Institute, National Cancer Center, Goyang 10408, Korea; (D.K.K.); (B.S.); (S.H.); (H.J.); (S.-H.B.); (H.Y.K.); (S.-H.L.); (S.L.); (J.K.K.); (K.-M.H.); (B.I.L.); (S.-Y.K.)
- Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang 10408, Korea
- Correspondence: ; Tel.: +82-31-920-2239
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8
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Bong SM, Bae SH, Song B, Gwak H, Yang SW, Kim S, Nam S, Rajalingam K, Oh SJ, Kim TW, Park S, Jang H, Lee BI. Regulation of mRNA export through API5 and nuclear FGF2 interaction. Nucleic Acids Res 2020; 48:6340-6352. [PMID: 32383752 PMCID: PMC7293033 DOI: 10.1093/nar/gkaa335] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [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: 12/07/2019] [Revised: 04/19/2020] [Accepted: 04/22/2020] [Indexed: 01/13/2023] Open
Abstract
API5 (APoptosis Inhibitor 5) and nuclear FGF2 (Fibroblast Growth Factor 2) are upregulated in various human cancers and are correlated with poor prognosis. Although their physical interaction has been identified, the function related to the resulting complex is unknown. Here, we determined the crystal structure of the API5–FGF2 complex and identified critical residues driving the protein interaction. These findings provided a structural basis for the nuclear localization of the FGF2 isoform lacking a canonical nuclear localization signal and identified a cryptic nuclear localization sequence in FGF2. The interaction between API5 and FGF2 was important for mRNA nuclear export through both the TREX and eIF4E/LRPPRC mRNA export complexes, thus regulating the export of bulk mRNA and specific mRNAs containing eIF4E sensitivity elements, such as c-MYC and cyclin D1. These data show the newly identified molecular function of API5 and nuclear FGF2, and provide a clue to understanding the dynamic regulation of mRNA export.
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Affiliation(s)
- Seoung Min Bong
- Research Institute, National Cancer Center, Goyang-si, Gyeonggi 10408, Republic of Korea
| | - Seung-Hyun Bae
- Research Institute, National Cancer Center, Goyang-si, Gyeonggi 10408, Republic of Korea.,Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang-si, Gyeonggi 10408, Republic of Korea
| | - Bomin Song
- Research Institute, National Cancer Center, Goyang-si, Gyeonggi 10408, Republic of Korea
| | - HyeRan Gwak
- Research Institute, National Cancer Center, Goyang-si, Gyeonggi 10408, Republic of Korea
| | - Seung-Won Yang
- Research Institute, National Cancer Center, Goyang-si, Gyeonggi 10408, Republic of Korea
| | - Sunshin Kim
- Research Institute, National Cancer Center, Goyang-si, Gyeonggi 10408, Republic of Korea
| | - Seungyoon Nam
- Department of Life Sciences, College of BioNano Technology and Department of Genome Medicine and Science, Graduate School of Medicine, Gachon University, Incheon 21565, Republic of Korea
| | | | - Se Jin Oh
- Department of Biomedical Sciences, Graduate School of Medicine, Korea University, Seoul 02841, Republic of Korea
| | - Tae Woo Kim
- Department of Biomedical Sciences, Graduate School of Medicine, Korea University, Seoul 02841, Republic of Korea
| | - SangYoun Park
- School of Systems Biomedical Science, Soongsil University, Seoul 06978, Republic of Korea
| | - Hyonchol Jang
- Research Institute, National Cancer Center, Goyang-si, Gyeonggi 10408, Republic of Korea.,Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang-si, Gyeonggi 10408, Republic of Korea
| | - Byung Il Lee
- Research Institute, National Cancer Center, Goyang-si, Gyeonggi 10408, Republic of Korea.,Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang-si, Gyeonggi 10408, Republic of Korea
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9
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Moon KC, Yeo HD, Yoon ES, Lee BI, Park SH, Chung JH, Lee HC. Robotic-assisted latissimus dorsi muscle flap for autologous chest reconstruction in poland syndrome. J Plast Reconstr Aesthet Surg 2020; 73:1506-1513. [PMID: 32461033 DOI: 10.1016/j.bjps.2020.01.030] [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: 04/15/2019] [Revised: 12/15/2019] [Accepted: 01/05/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND As chest reconstructions in Poland syndrome are performed for patients at young ages, patients are generally concerned about conspicuous scars. Meanwhile, a robotic-assisted latissimus dorsi (LD) muscle harvest with inconspicuous scars has been performed for autologous breast reconstruction. As our experience with robotic-assisted LD flap harvest has increased over the years, we have made improvements in surgical techniques to optimize results. The purpose of this study was to introduce and identify the role of the refined robotic-assisted LD muscle flap harvest technique in autologous chest reconstruction in patients with Poland syndrome. METHODS Autologous chest reconstruction using a robotic-assisted LD muscle flap harvest was performed for 21 patients with Poland syndrome. Subjective assessments were performed to evaluate improvement in chest deformity, patient satisfaction with overall outcomes, chest symmetry, and scars. Assessments by the operator and two independent evaluating investigators were carried out with patients' photographs. The complication rates and the time for robotic surgery were also evaluated. RESULTS At the last visit, the average patient grades for improvement in chest deformity, satisfaction with overall outcomes, chest symmetry, and scars were 4.80, 4.72, 4.18, and 4.87, respectively. Assessments by the operator and two independent evaluating investigators demonstrated that improvement in chest deformity was achieved in all patients. No serious complications such as flap loss were recorded for any patient. The time for robotic surgery markedly decreased as experience accumulated. CONCLUSIONS Surgical refinements for robotic-assisted LD flap harvest might be effective and reduce operative times for patients with Poland syndrome.
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Affiliation(s)
- K C Moon
- Department of Plastic Surgery, Korea University College of Medicine, Seoul, South Korea
| | - H D Yeo
- Department of Plastic Surgery, Korea University College of Medicine, Seoul, South Korea
| | - E S Yoon
- Department of Plastic Surgery, Korea University College of Medicine, Seoul, South Korea.
| | - B I Lee
- Department of Plastic Surgery, Korea University College of Medicine, Seoul, South Korea
| | - S H Park
- Department of Plastic Surgery, Korea University College of Medicine, Seoul, South Korea
| | - J H Chung
- Department of Plastic Surgery, Korea University College of Medicine, Seoul, South Korea
| | - H C Lee
- Department of Plastic Surgery, Korea University College of Medicine, Seoul, South Korea
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10
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Kim HY, Lee BI, Jeon JH, Kim DK, Kang SG, Shim JK, Kim SY, Kang SW, Jang H. Gossypol Suppresses Growth of Temozolomide-Resistant Glioblastoma Tumor Spheres. Biomolecules 2019; 9:biom9100595. [PMID: 31658771 PMCID: PMC6843396 DOI: 10.3390/biom9100595] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [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: 09/19/2019] [Revised: 10/07/2019] [Accepted: 10/08/2019] [Indexed: 02/07/2023] Open
Abstract
Temozolomide is the current first-line treatment for glioblastoma patients but, because many patients are resistant to it, there is an urgent need to develop antitumor agents to treat temozolomide-resistant glioblastoma. Gossypol, a natural polyphenolic compound, has been studied as a monotherapy or combination therapy for the treatment of glioblastoma. The combination of gossypol and temozolomide has been shown to inhibit glioblastoma, but it is not clear yet whether gossypol alone can suppress temozolomide-resistant glioblastoma. We find that gossypol suppresses the growth of temozolomide-resistant glioblastoma cells in both tumor sphere and adherent culture conditions, with tumor spheres showing the greatest sensitivity. Molecular docking and binding energy calculations show that gossypol has a similar affinity to the Bcl2 (B-cell lymphoma 2) family of proteins and several dehydrogenases. Gossypol reduces mitochondrial membrane potential and cellular ATP levels before cell death, which suggests that gossypol inhibits several dehydrogenases in the cell’s metabolic pathway. Treatment with a Bcl2 inhibitor does not fully explain the effect of gossypol on glioblastoma. Overall, this study demonstrates that gossypol can suppress temozolomide-resistant glioblastoma and will be helpful for the refinement of gossypol treatments by elucidating some of the molecular mechanisms of gossypol in glioblastoma.
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Affiliation(s)
- Hee Yeon Kim
- Division of Cancer Biology, Research Institute, National Cancer Center, Goyang 10408, Korea.
- Department of Life Science, Ewha Womans University, Seoul 03760, Korea.
| | - Byung Il Lee
- Division of Precision Medicine, Research Institute, National Cancer Center, Goyang 10408, Korea.
- Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang 10408, Korea.
| | - Ji Hoon Jeon
- Division of Cancer Biology, Research Institute, National Cancer Center, Goyang 10408, Korea.
| | - Dong Keon Kim
- Division of Cancer Biology, Research Institute, National Cancer Center, Goyang 10408, Korea.
| | - Seok-Gu Kang
- Department of Neurosurgery, Brain Tumor Center, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Korea.
| | - Jin-Kyoung Shim
- Department of Neurosurgery, Brain Tumor Center, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Korea.
| | - Soo Youl Kim
- Division of Cancer Biology, Research Institute, National Cancer Center, Goyang 10408, Korea.
| | - Sang Won Kang
- Department of Life Science, Ewha Womans University, Seoul 03760, Korea.
| | - Hyonchol Jang
- Division of Cancer Biology, Research Institute, National Cancer Center, Goyang 10408, Korea.
- Department of Cancer Biomedical Science, National Cancer Center Graduate School of Cancer Science and Policy, Goyang 10408, Korea.
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11
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Ho Chung J, Woo Kim D, Sik Yoon E, Il Lee B, Ha Park S. Effects of Vasopressors on Circulation of Porcine Abdominal Island Flap Model. Plast Reconstr Surg Glob Open 2019. [PMCID: PMC6750373 DOI: 10.1097/01.gox.0000585012.21255.d2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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12
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Chung YJ, Lee BI, Park CB. Multifunctional carbon dots as a therapeutic nanoagent for modulating Cu(ii)-mediated β-amyloid aggregation. Nanoscale 2019; 11:6297-6306. [PMID: 30882825 DOI: 10.1039/c9nr00473d] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The abnormal self-assembly of cerebral β-amyloid (Aβ) peptides into toxic aggregates is a hallmark of Alzheimer's disease (AD). Here, we report on multifunctional carbon dots that can chelate Cu(ii) ions, suppress Aβ aggregation, and photooxygenate Aβ peptides. Copper ions have high relevance to AD pathogenesis, causing Cu(ii)-mediated Aβ aggregation and oxidative damage to neuronal cells. For effective conjugation with Cu(ii)-bound Aβ complexes, we have designed carbon dots that possess nitrogen (N)-containing polyaromatic functionalities on their surface by employing o-phenylenediamine (OPD) as a polymerization precursor. We demonstrate that the polymerized OPD (pOPD)-derived carbon dots exhibit multiple capabilities against Cu(ii)-mediated Aβ aggregation. Furthermore, the pOPD-derived carbon dots exhibited dramatically enhanced absorption and fluorescence upon coordination with Cu(ii) ions and effectively photooxygenated Aβ peptides. The photodynamically modulated Aβ residues lost the propensity to coordinate with Cu(ii) and to assemble into toxic aggregates. This work demonstrates the potential of carbon dots as a multifunctional β-sheet breaker and provides a promising anti-amyloidogenic strategy for future Aβ-targeted AD treatments.
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Affiliation(s)
- You Jung Chung
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 335 Science Road, Daejeon 34141, Republic of Korea.
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13
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Kim H, Cho MH, Choi HS, Lee BI, Choi Y. Zwitterionic near-infrared fluorophore-conjugated epidermal growth factor for fast, real-time, and target-cell-specific cancer imaging. Am J Cancer Res 2019; 9:1085-1095. [PMID: 30867817 PMCID: PMC6401407 DOI: 10.7150/thno.29719] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 12/26/2018] [Indexed: 12/31/2022] Open
Abstract
Epidermal growth factor receptor (EGFR) is overexpressed in many types of cancers, which is associated with metastatic potential and poor prognosis in cancer patients. Therefore, development of EGFR-targeted sensitive imaging probes has been a challenge in tumor targeting, image-guided cancer surgery, patient-selective anti-EGFR therapy, and efficient targeted therapies. Methods: We synthesized a zwitterionic near-infrared fluorophore (ATTO655)-conjugated epidermal growth factor (EGF) as a novel activatable molecular probe. Fluorescence OFF/ON property and EGFR-targeting specificity of EGF-ATTO655 as well as its utility in real-time near-infrared (NIR) fluorescence imaging of EGFR-positive cancers were evaluated using in vitro and in vivo studies. Results: When conjugated to EGF, the fluorescence of ATTO655 quenched efficiently by photo-induced electron transfer (PET) mechanism between the conjugated dyes and nearby amino acid quenchers (tryptophan/tyrosine residues), which was stably maintained at physiological pH and in the presence of serum for at least 17 h. The fluorescence of EGF-ATTO655 turned on by receptor-mediated endocytosis and subsequent disintegration of EGF in EGFR-positive A431 cancer cells, thereby enabling specific and real-time fluorescence imaging of EGFR-positive cancer cells. Consequently, EGFR-positive tumors could be clearly visualized 3 h post-injection with a significantly high tumor-to-background ratio (TBR = 6.37). Conclusion: This PET mechanism-based OFF/ON type of EGF probe showed great potential for rapid, real-time, and target-cell-specific imaging of EGFR-overexpressing cancers in vitro and in vivo.
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14
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Lee BI, Chung YJ, Park CB. Photosensitizing materials and platforms for light-triggered modulation of Alzheimer's β-amyloid self-assembly. Biomaterials 2019; 190-191:121-132. [DOI: 10.1016/j.biomaterials.2018.10.043] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 10/12/2018] [Accepted: 10/28/2018] [Indexed: 12/12/2022]
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15
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Ahn M, Lee BI, Chia S, Habchi J, Kumita JR, Vendruscolo M, Dobson CM, Park CB. Chemical and mechanistic analysis of photodynamic inhibition of Alzheimer's β-amyloid aggregation. Chem Commun (Camb) 2019; 55:1152-1155. [DOI: 10.1039/c8cc09288e] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Inhibition of Aβ42 aggregation by photoexcited thioflavin T that generates singlet oxygen to oxidize monomeric Aβ42.
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Affiliation(s)
- Minkoo Ahn
- Centre for Misfolding Diseases
- Department of Chemistry
- University of Cambridge
- Cambridge
- UK
| | - Byung Il Lee
- KAIST Institute for the BioCentury
- Department of Materials Science and Engineering
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 34141
- Republic of Korea
| | - Sean Chia
- Centre for Misfolding Diseases
- Department of Chemistry
- University of Cambridge
- Cambridge
- UK
| | - Johnny Habchi
- Centre for Misfolding Diseases
- Department of Chemistry
- University of Cambridge
- Cambridge
- UK
| | - Janet R. Kumita
- Centre for Misfolding Diseases
- Department of Chemistry
- University of Cambridge
- Cambridge
- UK
| | - Michele Vendruscolo
- Centre for Misfolding Diseases
- Department of Chemistry
- University of Cambridge
- Cambridge
- UK
| | - Christopher M. Dobson
- Centre for Misfolding Diseases
- Department of Chemistry
- University of Cambridge
- Cambridge
- UK
| | - Chan Beum Park
- KAIST Institute for the BioCentury
- Department of Materials Science and Engineering
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 34141
- Republic of Korea
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16
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Bong SM, Moon S, Cho KH, Kim KT, Lee EY, Choi JW, Lee BI. A NCAPG2-Derived Phosphopeptide Selectively Binds to the Polo-Box Domain of PLK1 and Inhibits Cancer Cell Proliferation. Int J Pept Res Ther 2018. [DOI: 10.1007/s10989-018-9785-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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17
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Lee SJ, Choi JS, Bong SM, Hwang HJ, Lee J, Song HJ, Lee J, Kim JH, Koh JS, Lee BI. Crystal Structures of Spleen Tyrosine Kinase in Complex with Two Novel 4-Aminopyrido[4,3-d] Pyrimidine Derivative Inhibitors. Mol Cells 2018; 41:545-552. [PMID: 29890824 PMCID: PMC6030240 DOI: 10.14348/molcells.2018.2219] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 03/01/2018] [Accepted: 04/06/2018] [Indexed: 11/27/2022] Open
Abstract
Spleen tyrosine kinase (SYK) is a cytosolic non-receptor protein tyrosine kinase. Because SYK mediates key receptor signaling pathways involving the B cell receptor and Fc receptors, SYK is an attractive target for autoimmune disease and cancer treatments. To date, representative oral SYK inhibitors, including fostamatinib (R406 or R788), entospletinib (GS-9973), cerdulatinib (PRT062070), and TAK-659, have been assessed in clinical trials. Here, we report the crystal structures of SYK in complex with two newly developed inhibitors possessing 4-aminopyrido[4,3-D]pyrimidine moieties (SKI-G-618 and SKI-O-85). One SYK inhibitor (SKI-G-618) exhibited moderate inhibitory activity against SYK, whereas the other inhibitor (SKI-O-85) exhibited a low inhibitory profile against SYK. Binding mode analysis indicates that a highly potent SYK inhibitor might be developed by modifying and optimizing the functional groups that interact with Leu377, Gly378, and Val385 in the G-loop and the nearby region in SYK. In agreement with our structural analysis, one of our SYK inhibitor (SKI-G-618) shows strong inhibitory activities on the β-hexosaminidase release and phosphorylation of SYK/Vav in RBL-2H3 cells. Taken together, our findings have important implications for the design of high affinity SYK inhibitors.
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Affiliation(s)
- Sang Jae Lee
- Research Institute, National Cancer Center, Goyang, Gyeonggi 10408,
Korea
- The Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826,
Korea
| | | | - Seoung Min Bong
- Research Institute, National Cancer Center, Goyang, Gyeonggi 10408,
Korea
| | | | | | - Ho-Juhn Song
- Genosco, 767C Concord Ave, 2nd Floor, Cambridge, MA 02138,
USA
| | - Jaekyoo Lee
- Genosco, 767C Concord Ave, 2nd Floor, Cambridge, MA 02138,
USA
| | | | - Jong Sung Koh
- Genosco, 767C Concord Ave, 2nd Floor, Cambridge, MA 02138,
USA
| | - Byung Il Lee
- Research Institute, National Cancer Center, Goyang, Gyeonggi 10408,
Korea
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18
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Lee D, Lee BI, Park Y, Kim D. Application plan for radiological exposure model using virtual reality–based radiological exercise system. Nuclear Engineering and Technology 2018. [DOI: 10.1016/j.net.2018.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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19
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Son G, Lee BI, Chung YJ, Park CB. Light-triggered dissociation of self-assembled β-amyloid aggregates into small, nontoxic fragments by ruthenium (II) complex. Acta Biomater 2018; 67:147-155. [PMID: 29221856 DOI: 10.1016/j.actbio.2017.11.048] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Revised: 11/16/2017] [Accepted: 11/28/2017] [Indexed: 10/18/2022]
Abstract
The self-assembly of β-amyloid (Aβ) peptides into highly stable plaques is a major hallmark of Alzheimer's disease. Here, we report visible light-driven dissociation of β-sheet-rich Aβ aggregates into small, nontoxic fragments using ruthenium (II) complex {[Ru(bpy)3]2+} that functions as a highly sensitive, biocompatible, photoresponsive anti-Aβ agent. According to our multiple analyses using thioflavin T, bicinchoninic acid, dynamic light scattering, atomic force microscopy, circular dichroism, and Fourier transform infrared spectroscopy, [Ru(bpy)3]2+ successfully disassembled Aβ aggregates by destabilizing the β-sheet secondary structure under illumination of white light-emitting diode light. We validated that photoexcited [Ru(bpy)3]2+ causes oxidative damages of Aβ peptides, resulting in the dissociation of Aβ aggregates. The efficacy of [Ru(bpy)3]2+ is attributed to reactive oxygen species, such as singlet oxygen, generated from [Ru(bpy)3]2+ that absorbed photon energy in the visible range. Furthermore, photoexcited [Ru(bpy)3]2+ strongly inhibited the self-assembly of Aβ monomers even at concentrations as low as 1 nM and reduced the cytotoxicity of Aβ aggregates. STATEMENT OF SIGNIFICANCE Alzheimer's disease is the most common progressive neurodegenerative disease, affecting more than 13% of the population over age 65. Over the last decades, researchers have focused on understanding the mechanism of amyloid formation, the hallmark of various amyloid diseases including Alzheimer's and Parkinson's. In this paper, we successfully demonstrate the dissociation of β-Amyloid (Aβ) aggregates into small, less-amyloidic fragments by photoexcited [Ru(bpy)3]2+ through destabilization of β-sheet secondary structure. We validated the light-triggered dissociation of amyloid structure using multiple analytical tools. Furthermore, we confirmed that photoexcited [Ru(bpy)3]2+ reduces cytotoxicity of Aβ aggregates. Our work should open a new horizon in the study of Alzheimer's amyloid aggregation by showing the potential of photoexcited dye molecules as an alternative therapeutic strategy for treating Alzheimer's disease in future.
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Lee SJ, Han BG, Cho JW, Choi JS, Lee J, Song HJ, Koh JS, Lee BI. Correction: Crystal Structure of Pim1 Kinase in Complex with a Pyrido[4,3-D]Pyrimidine Derivative Suggests a Unique Binding Mode. PLoS One 2018; 13:e0190843. [PMID: 29293667 PMCID: PMC5749892 DOI: 10.1371/journal.pone.0190843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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21
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Bong SM, Son KB, Yang SW, Park JW, Cho JW, Kim KT, Kim H, Kim SJ, Kim YJ, Lee BI. Correction: Crystal Structure of Human Myotubularin-Related Protein 1 Provides Insight into the Structural Basis of Substrate Specificity. PLoS One 2018; 13:e0190844. [PMID: 29293653 PMCID: PMC5749852 DOI: 10.1371/journal.pone.0190844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
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22
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Han BG, Cho JW, Cho YD, Jeong KC, Kim SY, Lee BI. Corrigendum to "Crystal structure of human transglutaminase 2 in complex with adenosine triphosphate" [Int. J. Biol. Macromol. 47 (2010) 190-195]. Int J Biol Macromol 2017; 106:1330. [PMID: 28993020 DOI: 10.1016/j.ijbiomac.2017.09.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Byeong-Gu Han
- Cancer Cell and Molecular Biology Branch, Division of Cancer Biology, Research Institute, National Cancer Center, Goyang, Gyeonggi 410-769, Republic of Korea
| | - Jea-Won Cho
- Cancer Cell and Molecular Biology Branch, Division of Cancer Biology, Research Institute, National Cancer Center, Goyang, Gyeonggi 410-769, Republic of Korea
| | - Young Doo Cho
- Cancer Cell and Molecular Biology Branch, Division of Cancer Biology, Research Institute, National Cancer Center, Goyang, Gyeonggi 410-769, Republic of Korea
| | - Kyung-Chae Jeong
- Cancer Cell and Molecular Biology Branch, Division of Cancer Biology, Research Institute, National Cancer Center, Goyang, Gyeonggi 410-769, Republic of Korea
| | - Soo-Youl Kim
- Cancer Cell and Molecular Biology Branch, Division of Cancer Biology, Research Institute, National Cancer Center, Goyang, Gyeonggi 410-769, Republic of Korea.
| | - Byung Il Lee
- Cancer Cell and Molecular Biology Branch, Division of Cancer Biology, Research Institute, National Cancer Center, Goyang, Gyeonggi 410-769, Republic of Korea.
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Chung YJ, Kim K, Lee BI, Park CB. Carbon Nanodot-Sensitized Modulation of Alzheimer's β-Amyloid Self-Assembly, Disassembly, and Toxicity. Small 2017; 13:1700983. [PMID: 28714246 DOI: 10.1002/smll.201700983] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Revised: 06/02/2017] [Indexed: 05/28/2023]
Abstract
The self-assembly of amyloidogenic peptides into β-sheet-rich aggregates is a general feature of many neurodegenerative diseases, including Alzheimer's disease, which signifies the need for the effective attenuation of amyloid aggregation toward alleviating amyloid-associated neurotoxicity. This study reports that photoluminescent carbon nanodots (CDs) can effectively suppress Alzheimer's β-amyloid (Aβ) self-assembly and function as a β-sheet breaker disintegrating preformed Aβ aggregates. This study synthesizes CDs using ammonium citrate through one-pot hydrothermal treatment and passivates their surface with branched polyethylenimine (bPEI). The bPEI-coated CDs (bPEI@CDs) exhibit hydrophilic and cationic surface characteristics, which interact with the negatively charged residues of Aβ peptides, suppressing the aggregation of Aβ peptides. Under light illumination, bPEI@CDs display a more pronounced effect on Aβ aggregation and on the dissociation of β-sheet-rich assemblies through the generation of reactive oxygen species from photoactivated bPEI@CDs. The light-triggered attenuation effect of Aβ aggregation using a series of experiments, including photochemical and microscopic analysis, is verified. Furthermore, the cell viability test confirms the ability of photoactivated bPEI@CDs for the suppression of Aβ-mediated cytotoxicity, indicating bPEI@CDs' potency as an effective anti-Aβ neurotoxin agent.
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Affiliation(s)
- You Jung Chung
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Kayoung Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Byung Il Lee
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Chan Beum Park
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
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Cho SY, Park JW, Liu Y, Park YS, Kim JH, Yang H, Um H, Ko WR, Lee BI, Kwon SY, Ryu SW, Kwon CH, Park DY, Lee JH, Lee SI, Song KS, Hur H, Han SU, Chang H, Kim SJ, Kim BS, Yook JH, Yoo MW, Kim BS, Lee IS, Kook MC, Thiessen N, He A, Stewart C, Dunford A, Kim J, Shih J, Saksena G, Cherniack AD, Schumacher S, Weiner AT, Rosenberg M, Getz G, Yang EG, Ryu MH, Bass AJ, Kim HK. Sporadic Early-Onset Diffuse Gastric Cancers Have High Frequency of Somatic CDH1 Alterations, but Low Frequency of Somatic RHOA Mutations Compared With Late-Onset Cancers. Gastroenterology 2017; 153:536-549.e26. [PMID: 28522256 PMCID: PMC6863080 DOI: 10.1053/j.gastro.2017.05.012] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 05/08/2017] [Accepted: 05/08/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND & AIMS Early-onset gastric cancer, which develops in patients younger than most gastric cancers, is usually detected at advanced stages, has diffuse histologic features, and occurs more frequently in women. We investigated somatic genomic alterations associated with the unique characteristics of sporadic diffuse gastric cancers (DGCs) from younger patients. METHODS We conducted whole exome and RNA sequence analyses of 80 resected DGC samples from patients 45 years old or younger in Korea. Patients with pathogenic germline mutations in CDH1, TP53, and ATM were excluded from the onset of this analysis, given our focus on somatic alterations. We used MutSig2CV to evaluate the significance of mutated genes. We recruited 29 additional early-onset Korean DGC samples and performed SNP6.0 array and targeted sequencing analyses of these 109 early-onset DGC samples (54.1% female, median age, 38 years). We compared the SNP6.0 array and targeted sequencing data of the 109 early-onset DGC samples with those from diffuse-type stomach tumor samples collected from 115 patients in Korea who were 46 years or older (late onset) at the time of diagnosis (controls; 29.6% female, median age, 67 years). We compared patient survival times among tumors from different subgroups and with different somatic mutations. We performed gene silencing of RHOA or CDH1 in DGC cells with small interfering RNAs for cell-based assays. RESULTS We identified somatic mutations in the following genes in a significant number of early-onset DGCs: the cadherin 1 gene (CDH1), TP53, ARID1A, KRAS, PIK3CA, ERBB3, TGFBR1, FBXW7, RHOA, and MAP2K1. None of 109 early-onset DGC cases had pathogenic germline CDH1 mutations. A higher proportion of early-onset DGCs had mutations in CDH1 (42.2%) or TGFBR1 (7.3%) compared with control DGCs (17.4% and 0.9%, respectively) (P < .001 and P = .014 for CDH1 and TGFBR1, respectively). In contrast, a smaller proportion of early-onset DGCs contained mutations in RHOA (9.2%) than control DGCs (19.1%) (P = .033). Late-onset DGCs in The Cancer Genome Atlas also contained less frequent mutations in CDH1 and TGFBR1 and more frequent RHOA mutations, compared with early-onset DGCs. Early-onset DGCs from women contained significantly more mutations in CDH1 or TGFBR1 than early-onset DGCs from men. CDH1 alterations, but not RHOA mutations, were associated with shorter survival times in patients with early-onset DGCs (hazard ratio, 3.4; 95% confidence interval, 1.5-7.7). RHOA activity was reduced by an R5W substitution-the RHOA mutation most frequently detected in early-onset DGCs. Silencing of CDH1, but not RHOA, increased migratory activity of DGC cells. CONCLUSIONS In an integrative genomic analysis, we found higher proportions of early-onset DGCs to contain somatic mutations in CDH1 or TGFBR1 compared with late-onset DGCs. However, a smaller proportion of early-onset DGCs contained somatic mutations in RHOA than late-onset DGCs. CDH1 alterations, but not RHOA mutations, were associated with shorter survival times of patients, which might account for the aggressive clinical course of early-onset gastric cancer. Female predominance in early-onset gastric cancer may be related to relatively high rates of somatic CDH1 and TGFBR1 mutations in this population.
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Affiliation(s)
- Soo Young Cho
- National Cancer Center, Goyang, Gyeonggi, Republic of Korea
| | - Jun Won Park
- National Cancer Center, Goyang, Gyeonggi, Republic of Korea
| | - Yang Liu
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Young Soo Park
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Ju Hee Kim
- National Cancer Center, Goyang, Gyeonggi, Republic of Korea
| | - Hanna Yang
- National Cancer Center, Goyang, Gyeonggi, Republic of Korea
| | - Hyejin Um
- National Cancer Center, Goyang, Gyeonggi, Republic of Korea
| | - Woo Ri Ko
- National Cancer Center, Goyang, Gyeonggi, Republic of Korea
| | - Byung Il Lee
- National Cancer Center, Goyang, Gyeonggi, Republic of Korea
| | - Sun Young Kwon
- Department of Pathology, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Seung Wan Ryu
- Department of Surgery, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Chae Hwa Kwon
- Department of Pathology and BioMedical Research Institute, Pusan National University Hospital and Pusan National University School of Medicine, Busan, Republic of Korea
| | - Do Youn Park
- Department of Pathology and BioMedical Research Institute, Pusan National University Hospital and Pusan National University School of Medicine, Busan, Republic of Korea
| | - Jae-Hyuk Lee
- Department of Pathology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Sang Il Lee
- Department of Surgery, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Kyu Sang Song
- Department of Pathology, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Hoon Hur
- Department of Surgery, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Sang-Uk Han
- Department of Surgery, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Heekyung Chang
- Department of Pathology, Kosin University College of Medicine, Busan, Republic of Korea
| | - Su-Jin Kim
- Department of Pathology, Dong-A University College of Medicine, Busan, Republic of Korea
| | - Byung-Sik Kim
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jeong-Hwan Yook
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Moon-Won Yoo
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Beom-Su Kim
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - In-Seob Lee
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | | | - Nina Thiessen
- British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - An He
- British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - Chip Stewart
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Andrew Dunford
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Jaegil Kim
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Juliann Shih
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts;,Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Gordon Saksena
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Andrew D. Cherniack
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts;,Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Steven Schumacher
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Amaro-Taylor Weiner
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Mara Rosenberg
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Gad Getz
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Eun Gyeong Yang
- Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Min-Hee Ryu
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Adam J. Bass
- Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts;,Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Hark Kyun Kim
- National Cancer Center, Goyang, Gyeonggi, Republic of Korea; National Cancer Center Graduate School of Cancer Science and Policy, Goyang, Gyeonggi, Republic of Korea.
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25
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Woo JK, Jung HJ, Park JY, Kang JH, Lee BI, Shin D, Nho CW, Cho SY, Seong JK, Oh SH. Daurinol blocks breast and lung cancer metastasis and development by inhibition of focal adhesion kinase (FAK). Oncotarget 2017; 8:57058-57071. [PMID: 28915654 PMCID: PMC5593625 DOI: 10.18632/oncotarget.18983] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 06/18/2017] [Indexed: 01/16/2023] Open
Abstract
FAK overexpression has been reported in diverse primary and metastatic tumor tissues, supporting its pro-tumorigenic and pro-metastatic roles. Therefore, we have developed a neo-treatment strategy using daurinol to effectively treat cancer metastasis. Daurinol blocked cancer cell migration and invasion in vitro and exhibited anti-metastatic activity in an experimental metastasis model of breast and lung cancer. Daurinol selectively inhibited phosphorylation of FAK at Tyr925, Tyr576/577, and Tyr397 sites in a dose- and time-dependent manner. Daurinol effectively suppressed migration and invasion of MDA-MB-231 and A549 cancer cells. These data were associated with inhibition of expression and secretion of invasion factors, including matrix metalloproteinase (MMP) 2, MMP9, and urokinase plasminogen activator (uPA). Consistent with these in vitro results, daurinol (10 mg/kg; Oral gavage) effectively inhibited breast and lung cancer metastasis in a mouse model. In addition, daurinol showed strong suppressive activity of cell survival as revealed by colony formation assays. Analysis of cellular phenotypes revealed that inhibition of FAK phosphorylation in cancer cells limited colony formation, cell migration, and invasion, thereby reducing the cell proliferation rate. Furthermore, daurinol significantly reduced tumor development in 4-(methylnitrosoamino)-1-(3-pyridyl)-1-butanone (NNK)/benzo(a)pyrene (BaP)-treated A/J mice. Our results suggest that daurinol suppresses lung metastasis through inhibition of migration and survival via blockade of FAK activity.
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Affiliation(s)
- Jong Kyu Woo
- Gachon Institute of Pharmaceutical Sciences, Gachon University, Incheon, Republic of Korea.,Korea Mouse Phenotyping Center, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Hyun Jin Jung
- Korea Mouse Phenotyping Center, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Ji-Youn Park
- Gachon Institute of Pharmaceutical Sciences, Gachon University, Incheon, Republic of Korea
| | - Ju-Hee Kang
- Gachon Institute of Pharmaceutical Sciences, Gachon University, Incheon, Republic of Korea
| | - Byung Il Lee
- National Cancer Center, Goyang-si, Republic of Korea
| | - DongYun Shin
- Gachon Institute of Pharmaceutical Sciences, Gachon University, Incheon, Republic of Korea
| | - Chu Won Nho
- Korea Institute of Science and Technology (KIST), Gangneung Institute, Gangneung-si, Republic of Korea
| | - Soo-Young Cho
- National Cancer Center, Goyang-si, Republic of Korea
| | - Je Kyung Seong
- Korea Mouse Phenotyping Center, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Seung Hyun Oh
- Gachon Institute of Pharmaceutical Sciences, Gachon University, Incheon, Republic of Korea
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Kim K, Lee BI, Chung YJ, Choi WS, Park CB. Alzheimer's Disease: Hematite-Based Photoelectrode Materials for Photoelectrocatalytic Inhibition of Alzheimer's β-Amyloid Self-Assembly (Adv. Healthcare Mater. 8/2017). Adv Healthc Mater 2017. [DOI: 10.1002/adhm.201770037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kayoung Kim
- Department of Materials Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST); 335 Science Road Yuseong-gu Daejeon 305-701 Republic of Korea
| | - Byung Il Lee
- Department of Materials Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST); 335 Science Road Yuseong-gu Daejeon 305-701 Republic of Korea
| | - You Jung Chung
- Department of Materials Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST); 335 Science Road Yuseong-gu Daejeon 305-701 Republic of Korea
| | - Woo Seok Choi
- Department of Materials Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST); 335 Science Road Yuseong-gu Daejeon 305-701 Republic of Korea
| | - Chan Beum Park
- Department of Materials Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST); 335 Science Road Yuseong-gu Daejeon 305-701 Republic of Korea
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27
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Kim K, Lee BI, Chung YJ, Choi WS, Park CB. Hematite-Based Photoelectrode Materials for Photoelectrocatalytic Inhibition of Alzheimer's β-Amyloid Self-Assembly. Adv Healthc Mater 2017; 6. [PMID: 28194907 DOI: 10.1002/adhm.201601133] [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: 10/05/2016] [Revised: 12/22/2016] [Indexed: 01/24/2023]
Abstract
A visible light-active, hematite-based photoelectrode platform for suppressing β-amyloid (Aβ) self-assembly in vitro is reported. Upon illumination of a light-emitting diode with an anodic bias, the hematite photoanode generates reactive radical species, such as superoxide ions and hydroxyl radicals, via photoelectrocatalytic process. According to our analyses, the hematite photoanode exhibited a strong inhibitory effect on Aβ aggregation under visible light illumination and anodic bias. We found that hole-derived radicals played a significant role of oxidizing Aβ peptides, which effectively blocked further aggregation. The efficacy of photoelectrocatalytic inhibition on Aβ aggregation was enhanced by introducing cobalt phosphate (Co-Pi) as a co-catalyst on the hematite photoanode, which facilitated the separation of electron-hole pairs. We verified that both bare and Co-Pi@hematite photoanodes are biocompatible and effective in reducing Aβ aggregation-induced cytotoxicity.
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Affiliation(s)
- Kayoung Kim
- Department of Materials Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST); 335 Science Road Yuseong-gu Daejeon 305-701 Republic of Korea
| | - Byung Il Lee
- Department of Materials Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST); 335 Science Road Yuseong-gu Daejeon 305-701 Republic of Korea
| | - You Jung Chung
- Department of Materials Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST); 335 Science Road Yuseong-gu Daejeon 305-701 Republic of Korea
| | - Woo Seok Choi
- Department of Materials Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST); 335 Science Road Yuseong-gu Daejeon 305-701 Republic of Korea
| | - Chan Beum Park
- Department of Materials Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST); 335 Science Road Yuseong-gu Daejeon 305-701 Republic of Korea
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28
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Imre G, Berthelet J, Heering J, Kehrloesser S, Melzer IM, Lee BI, Thiede B, Dötsch V, Rajalingam K. Apoptosis inhibitor 5 is an endogenous inhibitor of caspase-2. EMBO Rep 2017; 18:733-744. [PMID: 28336776 DOI: 10.15252/embr.201643744] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 02/09/2017] [Accepted: 02/14/2017] [Indexed: 11/09/2022] Open
Abstract
Caspases are key enzymes responsible for mediating apoptotic cell death. Across species, caspase-2 is the most conserved caspase and stands out due to unique features. Apart from cell death, caspase-2 also regulates autophagy, genomic stability and ageing. Caspase-2 requires dimerization for its activation which is primarily accomplished by recruitment to high molecular weight protein complexes in cells. Here, we demonstrate that apoptosis inhibitor 5 (API5/AAC11) is an endogenous and direct inhibitor of caspase-2. API5 protein directly binds to the caspase recruitment domain (CARD) of caspase-2 and impedes dimerization and activation of caspase-2. Interestingly, recombinant API5 directly inhibits full length but not processed caspase-2. Depletion of endogenous API5 leads to an increase in caspase-2 dimerization and activation. Consistently, loss of API5 sensitizes cells to caspase-2-dependent apoptotic cell death. These results establish API5/AAC-11 as a direct inhibitor of caspase-2 and shed further light onto mechanisms driving the activation of this poorly understood caspase.
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Affiliation(s)
- Gergely Imre
- MSU-FZI, Institute of Immunology, University Medical Center Mainz, JGU, Mainz, Germany
| | - Jean Berthelet
- MSU-FZI, Institute of Immunology, University Medical Center Mainz, JGU, Mainz, Germany
| | - Jan Heering
- Institute of Biophysical Chemistry and Center for Biomolecular Magnetic Resonance, Goethe University, Frankfurt, Germany
| | - Sebastian Kehrloesser
- Institute of Biophysical Chemistry and Center for Biomolecular Magnetic Resonance, Goethe University, Frankfurt, Germany
| | - Inga Maria Melzer
- MSU-FZI, Institute of Immunology, University Medical Center Mainz, JGU, Mainz, Germany
| | - Byung Il Lee
- Division of Convergence Technology, Biomolecular Function Research Branch, National Cancer Center, Goyang-si, Gyeonggi-do, Korea
| | - Bernd Thiede
- Department of Biosciences, University of Oslo, Oslo, Norway
| | - Volker Dötsch
- Institute of Biophysical Chemistry and Center for Biomolecular Magnetic Resonance, Goethe University, Frankfurt, Germany
| | - Krishnaraj Rajalingam
- MSU-FZI, Institute of Immunology, University Medical Center Mainz, JGU, Mainz, Germany .,UCT, Mainz, German Cancer Consortium (DKTK), Partner Site Frankfurt/Mainz, Frankfurt, Germany.,German Cancer Research Center (DKFZ), Heidelberg, Germany
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29
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Kuk S, Lee BI, Lee JS, Park CB. Rattle-Structured Upconversion Nanoparticles for Near-IR-Induced Suppression of Alzheimer's β-Amyloid Aggregation. Small 2017; 13:1603139. [PMID: 28092125 DOI: 10.1002/smll.201603139] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 11/08/2016] [Indexed: 05/28/2023]
Abstract
Rose bengal (RB)-loaded upconverting nanocomposites are synthesized as a near-infrared (NIR)-responsive inhibitor of Aβ aggregation. Rattle-structured, organosilica shell (ROS) is deposited on NaYF4 :Yb,Er nanocrystals (UCNPs) for high loading efficiency and disaggregation of RB. RB/UCNP@ROS successfully inhibits Aβ self-assembly under NIR irradiation by generating 1 O2 . Furthermore, photoexcited RB/UCNP@ROS is effective in suppressing Aβ-induced cytotoxicity.
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Affiliation(s)
- Sukeun Kuk
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Byung Il Lee
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Joon Seok Lee
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Chan Beum Park
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
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30
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Kim H, Choi HS, Kim SK, Lee BI, Choi Y. Antigen-responsive molecular sensor enables real-time tumor-specific imaging. Am J Cancer Res 2017; 7:952-961. [PMID: 28382167 PMCID: PMC5381257 DOI: 10.7150/thno.16647] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 01/02/2017] [Indexed: 12/22/2022] Open
Abstract
Antibody-fluorophore conjugates have high potential for the specific fluorescence detection of target cancer cells in vitro and in vivo. However, the antibody-fluorophore conjugates described to date are inappropriate for real-time imaging of target cells because removal of unbound antibody is required to reduce background fluorescence before quantifiable analysis by microscopy. In addition, clinical applications of the conjugates have been limited by persistent background retention due to their long systemic circulation and nonspecific uptake. Here we report fast and real-time near-infrared fluorescence imaging of target cancer cells using an antigen-responsive molecular “on-off” sensor: the fluorescence of trastuzumab-ATTO680 conjugate is dark (i.e., turned off) in the extracellular region, while it becomes highly fluorescent (i.e., turned on) upon binding to the target antigen HER2 on cancer cell surface. This molecular switch enables fast and real-time imaging of target cancer cells in vitro and in vivo.
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31
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Lee SJ, Choi JS, Han BG, Kim HS, Song HJ, Lee J, Nam S, Goh SH, Kim JH, Koh JS, Lee BI. Crystal structures of spleen tyrosine kinase in complex with novel inhibitors: structural insights for design of anticancer drugs. FEBS J 2016; 283:3613-3625. [DOI: 10.1111/febs.13831] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 07/04/2016] [Accepted: 08/08/2016] [Indexed: 11/27/2022]
Affiliation(s)
- Sang Jae Lee
- Research Institute; National Cancer Center; Goyang Gyeonggi Korea
- The Research Institute of Pharmaceutical Sciences; College of Pharmacy; Seoul National University; Korea
| | | | - Byeong-Gu Han
- Research Institute; National Cancer Center; Goyang Gyeonggi Korea
| | - Hyoun Sook Kim
- Research Institute; National Cancer Center; Goyang Gyeonggi Korea
| | | | | | - Seungyoon Nam
- Department of Life Sciences; College of BioNano Technology; Gachon University; Sungnam Korea
- Department of Genome Medicine and Science; Graduate School of Medicine; Gachon University; Incheon Korea
| | - Sung-Ho Goh
- Research Institute; National Cancer Center; Goyang Gyeonggi Korea
| | | | | | - Byung Il Lee
- Research Institute; National Cancer Center; Goyang Gyeonggi Korea
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32
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Yoon KA, Park B, Lee BI, Yang MJ, Kong SY, Lee ES. Clinically Significant Unclassified Variants in BRCA1 and BRCA2 genes among Korean Breast Cancer Patients. Cancer Res Treat 2016; 49:627-634. [PMID: 27658390 PMCID: PMC5512368 DOI: 10.4143/crt.2016.292] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [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: 07/05/2016] [Accepted: 09/13/2016] [Indexed: 12/24/2022] Open
Abstract
PURPOSE Unclassified variants (UVs) of BRCA1 and BRCA2 genes are not defined as pathogenic for breast cancer, and their clinical significance currently remains undefined. Therefore, this study was conducted to identify potentially pathogenic UVs by comparing their prevalence between breast cancer patients and controls. MATERIALS AND METHODS A total of 328 breast cancer patients underwent BRCA1/2 genetic screening at the National Cancer Center of Korea. Genetic variants of BRCA genes that were categorized as unclassified according to the Breast Cancer Information Core database were selected based on allelic frequency, after which candidate variants were genotyped in 421 healthy controls. We also examined family members of the study participants. Finally, the effects of amino acid substitutions on protein structure and function were predicted in silico. RESULTS Genetic tests revealed 33 UVs in BRCA1 and 47 in BRCA2. Among 15 candidates genotyped in healthy controls, c.5339T>C in BRCA1 and c.6029T>G, c.7522G>A in BRCA2 were not detected. Moreover, the c.5339T>C variant in the BRCA1 gene was detected in four patients with a family history of breast cancer. This nonsynonymous variant (Leu1780Pro) in the BRCA1 C-terminal domain was predicted to have an effect on BRCA1 protein structure/function. CONCLUSION This study showed that comparison of genotype frequency between cases and controls could help identify UVs of BRCA genes that are potentially pathogenic. Moreover, ourfindings suggest that c.5339T>C in BRCA1 might be a pathogenic variant for patients and their families.
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Affiliation(s)
- Kyong-Ah Yoon
- Center for Breast Cancer, Hospital, National Cancer Center, Goyang, Korea.,College of Veterinary Medicine, Konkuk University, Seoul, Korea
| | - Boyoung Park
- Department of Cancer Control and Policy, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea
| | - Byung Il Lee
- Biomolecular Function Research Branch, National Cancer Center, Goyang, Korea
| | - Moon Jung Yang
- Center for Breast Cancer, Hospital, National Cancer Center, Goyang, Korea
| | - Sun-Young Kong
- Genetic Counseling Clinic, Hospital, National Cancer Center, Goyang, Korea.,Department of System Cancer Science, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea.,Translational Epidemiology Branch, National Cancer Center, Goyang, Korea
| | - Eun Sook Lee
- Center for Breast Cancer, Hospital, National Cancer Center, Goyang, Korea.,Department of System Cancer Science, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea.,Precision Medicine Branch, Research Institute, National Cancer Center, Goyang, Korea
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33
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Chung YJ, Lee BI, Ko JW, Park CB. Alzheimer Therapy: Photoactive g-C3N4Nanosheets for Light-Induced Suppression of Alzheimer's β-Amyloid Aggregation and Toxicity (Adv. Healthcare Mater. 13/2016). Adv Healthc Mater 2016. [DOI: 10.1002/adhm.201670064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- You Jung Chung
- Department of Materials Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST); 335 Science Road Yuseong-gu Daejeon 305-701 South Korea
| | - Byung Il Lee
- Department of Materials Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST); 335 Science Road Yuseong-gu Daejeon 305-701 South Korea
| | - Jong Wan Ko
- Department of Materials Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST); 335 Science Road Yuseong-gu Daejeon 305-701 South Korea
| | - Chan Beum Park
- Department of Materials Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST); 335 Science Road Yuseong-gu Daejeon 305-701 South Korea
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Chung YJ, Lee BI, Ko JW, Park CB. Photoactive g-C3 N4 Nanosheets for Light-Induced Suppression of Alzheimer's β-Amyloid Aggregation and Toxicity. Adv Healthc Mater 2016; 5:1560-5. [PMID: 27111552 DOI: 10.1002/adhm.201500964] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [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: 11/30/2015] [Revised: 03/02/2016] [Indexed: 12/12/2022]
Abstract
Graphitic carbon nitride (g-C3 N4 ) has a suppressive capability toward Alzheimer's Aβ aggregation under light-illumination. Photoinduced electrons of g-C3 N4 generate reactive oxygen resulting in photooxidation of amyloid peptides that blocks Aβ aggregation. Fe doping of g-C3 N4 frameworks results in enhanced optical properties and even stronger inhibition of Aβ aggregation.
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Affiliation(s)
- You Jung Chung
- Department of Materials Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST); 335 Science Road Yuseong-gu Daejeon 305-701 South Korea
| | - Byung Il Lee
- Department of Materials Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST); 335 Science Road Yuseong-gu Daejeon 305-701 South Korea
| | - Jong Wan Ko
- Department of Materials Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST); 335 Science Road Yuseong-gu Daejeon 305-701 South Korea
| | - Chan Beum Park
- Department of Materials Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST); 335 Science Road Yuseong-gu Daejeon 305-701 South Korea
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35
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Bong SM, Son KB, Yang SW, Park JW, Cho JW, Kim KT, Kim H, Kim SJ, Kim YJ, Lee BI. Crystal Structure of Human Myotubularin-Related Protein 1 Provides Insight into the Structural Basis of Substrate Specificity. PLoS One 2016; 11:e0152611. [PMID: 27018598 PMCID: PMC4809516 DOI: 10.1371/journal.pone.0152611] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 03/16/2016] [Indexed: 01/07/2023] Open
Abstract
Myotubularin-related protein 1 (MTMR1) is a phosphatase that belongs to the tyrosine/dual-specificity phosphatase superfamily. MTMR1 has been shown to use phosphatidylinositol 3-monophosphate (PI(3)P) and/or phosphatidylinositol 3,5-bisphosphate (PI(3,5)P2) as substrates. Here, we determined the crystal structure of human MTMR1. The refined model consists of the Pleckstrin homology (PH)-GRAM and phosphatase (PTP) domains. The overall structure was highly similar to the previously reported MTMR2 structure. Interestingly, two phosphate molecules were coordinated by strictly conserved residues located in the C(X)5R motif of the active site. Additionally, our biochemical studies confirmed the substrate specificity of MTMR1 for PI(3)P and PI(3,5)P2 over other phosphatidylinositol phosphates. Our structural and enzymatic analyses provide insight into the catalytic mechanism and biochemical properties of MTMR1.
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Affiliation(s)
- Seoung Min Bong
- Research institute, National Cancer Center, Goyang, Gyeonggi 10408, Republic of Korea
| | - Kka-bi Son
- Department of Biomedical Chemistry, Konkuk University, Chungju 27478, Republic of Korea
| | - Seung-Won Yang
- Research institute, National Cancer Center, Goyang, Gyeonggi 10408, Republic of Korea
| | - Jae-Won Park
- Research institute, National Cancer Center, Goyang, Gyeonggi 10408, Republic of Korea
| | - Jea-Won Cho
- Research institute, National Cancer Center, Goyang, Gyeonggi 10408, Republic of Korea
| | - Kyung-Tae Kim
- Research institute, National Cancer Center, Goyang, Gyeonggi 10408, Republic of Korea
| | - Hackyoung Kim
- Department of Biomedical Chemistry, Konkuk University, Chungju 27478, Republic of Korea
| | - Seung Jun Kim
- Medical Proteomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Republic of Korea
| | - Young Jun Kim
- Department of Biomedical Chemistry, Konkuk University, Chungju 27478, Republic of Korea
- * E-mail: (YJK); (BIL)
| | - Byung Il Lee
- Research institute, National Cancer Center, Goyang, Gyeonggi 10408, Republic of Korea
- * E-mail: (YJK); (BIL)
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36
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Choi JW, Bong SM, Yang SW, Jang H, Park S, Kim SJ, Lee BI. Recombinant Human Laforin Expressed in Insect Cells: Expression, Purification, and Biochemical Characterizations. Journal of the Korean Chemical Society 2015. [DOI: 10.5012/jkcs.2015.59.5.466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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37
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Choi JS, Hwang HJ, Kim SW, Lee BI, Lee J, Song HJ, Koh JS, Kim JH, Lee PH. Highly potent and selective pyrazolylpyrimidines as Syk kinase inhibitors. Bioorg Med Chem Lett 2015; 25:4441-6. [PMID: 26384287 DOI: 10.1016/j.bmcl.2015.09.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [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: 06/17/2015] [Revised: 09/02/2015] [Accepted: 09/05/2015] [Indexed: 12/29/2022]
Abstract
A series of pyrazolylpyrimidine scaffold based Syk inhibitors were synthesized and evaluated for their biological activities and selectivity. Lead optimization efforts provided compounds with potent Syk inhibition in both enzymatic and TNF-α release assay.
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Affiliation(s)
- Jang-Sik Choi
- Department of Chemistry, Kangwon National University, Chuncheon 200-701, Republic of Korea; Oscotec Inc., 694-1 Sampyeong-dong, Bundang-gu, Seongnam-si, Gyeonggi-do 463-400, Republic of Korea
| | - Hae-Jun Hwang
- Oscotec Inc., 694-1 Sampyeong-dong, Bundang-gu, Seongnam-si, Gyeonggi-do 463-400, Republic of Korea
| | - Se-Won Kim
- Oscotec Inc., 694-1 Sampyeong-dong, Bundang-gu, Seongnam-si, Gyeonggi-do 463-400, Republic of Korea
| | - Byung Il Lee
- Biomolecular Function Research Branch, Division of Convergence Technology, Research Institute, National Cancer Center, Goyang, Gyeonggi 410-769, Republic of Korea
| | - Jaekyoo Lee
- Genosco, 767C Concord Avenue, 2nd Floor, Cambridge, MA 02138, USA
| | - Ho-Juhn Song
- Genosco, 767C Concord Avenue, 2nd Floor, Cambridge, MA 02138, USA
| | - Jong Sung Koh
- Genosco, 767C Concord Avenue, 2nd Floor, Cambridge, MA 02138, USA
| | - Jung-Ho Kim
- Oscotec Inc., 694-1 Sampyeong-dong, Bundang-gu, Seongnam-si, Gyeonggi-do 463-400, Republic of Korea.
| | - Phil Ho Lee
- Department of Chemistry, Kangwon National University, Chuncheon 200-701, Republic of Korea.
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38
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Lee BI, Lee S, Suh YS, Lee JS, Kim AK, Kwon OY, Yu K, Park CB. Titelbild: Photoexcited Porphyrins as a Strong Suppressor of β-Amyloid Aggregation and Synaptic Toxicity (Angew. Chem. 39/2015). Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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39
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Kim HS, Im HN, An DR, Yoon JY, Jang JY, Mobashery S, Hesek D, Lee M, Yoo J, Cui M, Choi S, Kim C, Lee NK, Kim SJ, Kim JY, Bang G, Han BW, Lee BI, Yoon HJ, Suh SW. The Cell Shape-determining Csd6 Protein from Helicobacter pylori Constitutes a New Family of L,D-Carboxypeptidase. J Biol Chem 2015; 290:25103-17. [PMID: 26306031 PMCID: PMC4599014 DOI: 10.1074/jbc.m115.658781] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Indexed: 01/01/2023] Open
Abstract
Helicobacter pylori causes gastrointestinal diseases, including gastric cancer. Its high motility in the viscous gastric mucosa facilitates colonization of the human stomach and depends on the helical cell shape and the flagella. In H. pylori, Csd6 is one of the cell shape-determining proteins that play key roles in alteration of cross-linking or by trimming of peptidoglycan muropeptides. Csd6 is also involved in deglycosylation of the flagellar protein FlaA. To better understand its function, biochemical, biophysical, and structural characterizations were carried out. We show that Csd6 has a three-domain architecture and exists as a dimer in solution. The N-terminal domain plays a key role in dimerization. The middle catalytic domain resembles those of l,d-transpeptidases, but its pocket-shaped active site is uniquely defined by the four loops I to IV, among which loops I and III show the most distinct variations from the known l,d-transpeptidases. Mass analyses confirm that Csd6 functions only as an l,d-carboxypeptidase and not as an l,d-transpeptidase. The d-Ala-complexed structure suggests possible binding modes of both the substrate and product to the catalytic domain. The C-terminal nuclear transport factor 2-like domain possesses a deep pocket for possible binding of pseudaminic acid, and in silico docking supports its role in deglycosylation of flagellin. On the basis of these findings, it is proposed that H. pylori Csd6 and its homologs constitute a new family of l,d-carboxypeptidase. This work provides insights into the function of Csd6 in regulating the helical cell shape and motility of H. pylori.
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Affiliation(s)
- Hyoun Sook Kim
- From the Departments of Chemistry and Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Ha Na Im
- Biophysics and Chemical Biology, College of Natural Sciences, and
| | - Doo Ri An
- Biophysics and Chemical Biology, College of Natural Sciences, and
| | - Ji Young Yoon
- Biophysics and Chemical Biology, College of Natural Sciences, and
| | | | - Shahriar Mobashery
- the Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556
| | - Dusan Hesek
- the Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556
| | - Mijoon Lee
- the Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556
| | - Jakyung Yoo
- the National Leading Research Laboratory of Molecular Modeling and Drug Design, College of Pharmacy, Graduate School of Pharmaceutical Sciences, and Global Top 5 Research Program, Ewha Womans University, Seoul 120-750, Republic of Korea
| | - Minghua Cui
- the National Leading Research Laboratory of Molecular Modeling and Drug Design, College of Pharmacy, Graduate School of Pharmaceutical Sciences, and Global Top 5 Research Program, Ewha Womans University, Seoul 120-750, Republic of Korea
| | - Sun Choi
- the National Leading Research Laboratory of Molecular Modeling and Drug Design, College of Pharmacy, Graduate School of Pharmaceutical Sciences, and Global Top 5 Research Program, Ewha Womans University, Seoul 120-750, Republic of Korea
| | - Cheolhee Kim
- the Department of Physics, POSTECH, Pohang 790-784, Republic of Korea
| | - Nam Ki Lee
- the Department of Physics, POSTECH, Pohang 790-784, Republic of Korea
| | - Soon-Jong Kim
- the Department of Chemistry, Mokpo National University, Chonnam 534-729, Republic of Korea
| | - Jin Young Kim
- the Division of Mass Spectrometry, Korea Basic Science Institute, Chungbuk 363-883, Republic of Korea, and
| | - Geul Bang
- the Division of Mass Spectrometry, Korea Basic Science Institute, Chungbuk 363-883, Republic of Korea, and
| | - Byung Woo Han
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Byung Il Lee
- the Biomolecular Function Research Branch, Division of Convergence Technology, Research Institute, National Cancer Center, Gyeonggi 410-769, Republic of Korea
| | | | - Se Won Suh
- From the Departments of Chemistry and Biophysics and Chemical Biology, College of Natural Sciences, and
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Lee BI, Lee S, Suh YS, Lee JS, Kim A, Kwon O, Yu K, Park CB. Cover Picture: Photoexcited Porphyrins as a Strong Suppressor of β‐Amyloid Aggregation and Synaptic Toxicity (Angew. Chem. Int. Ed. 39/2015). Angew Chem Int Ed Engl 2015. [DOI: 10.1002/anie.201507432] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Byung Il Lee
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Science Road, Daejeon 305‐701 (Republic of Korea)
| | - Seongsoo Lee
- Neurophysiology Research Group, Bionano Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Department of Functional Genomics, Korea University of Science and Technology (UST), Daejeon 305‐333 (Korea)
- Gwangju Center, Korea Basic Science Institute (KBSI), Gwangju 500‐757 (Korea)
| | - Yoon Seok Suh
- Neurophysiology Research Group, Bionano Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Department of Functional Genomics, Korea University of Science and Technology (UST), Daejeon 305‐333 (Korea)
| | - Joon Seok Lee
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Science Road, Daejeon 305‐701 (Republic of Korea)
| | - Ae‐kyeong Kim
- Neurophysiology Research Group, Bionano Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Department of Functional Genomics, Korea University of Science and Technology (UST), Daejeon 305‐333 (Korea)
| | - O‐Yu Kwon
- Department of Anatomy, College of Medicine, Chungnam National University, Daejeon 301‐747 (Korea)
| | - Kweon Yu
- Neurophysiology Research Group, Bionano Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Department of Functional Genomics, Korea University of Science and Technology (UST), Daejeon 305‐333 (Korea)
| | - Chan Beum Park
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Science Road, Daejeon 305‐701 (Republic of Korea)
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41
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Park E, Kim N, Ficarro SB, Zhang Y, Lee BI, Cho A, Kim K, Park AKJ, Park WY, Murray B, Meyerson M, Beroukhim R, Marto JA, Cho J, Eck MJ. Structure and mechanism of activity-based inhibition of the EGF receptor by Mig6. Nat Struct Mol Biol 2015; 22:703-711. [PMID: 26280531 PMCID: PMC4790445 DOI: 10.1038/nsmb.3074] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 07/24/2015] [Indexed: 12/17/2022]
Abstract
Mig6 is a feedback inhibitor that directly binds, inhibits and drives internalization of ErbB-family receptors. Mig6 selectivity targets activated receptors. Here we find that the EGF receptor phosphorylates Mig6 on Tyr394, and that this phosphorylation is primed by prior phosphorylation of an adjacent residue, Tyr395, by Src. Crystal structures of human EGFR–Mig6 complexes reveal the structural basis for enhanced phosphorylation of primed Mig6 and show how Mig6 rearranges after phosphorylation by EGFR to effectively irreversibly inhibit the same receptor that catalyzed its phosphorylation. This dual phosphorylation site allows Mig6 to inactivate EGFR in a manner that requires activation of the target receptor and can be modulated by Src. Loss of Mig6 is a driving event in human cancer; analysis of 1057 gliomas reveals frequent focal deletions of ERRFI, the gene that encodes Mig6, in EGFR-amplified glioblastomas.
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Affiliation(s)
- Eunyoung Park
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA USA.,Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA USA
| | - Nayoung Kim
- Samsung Genome Institute, Samsung Medical Center, Seoul, Republic of Korea.,Samsung Advanced Institute for Health Sciences and Technology, SungKyunKwan University, Seoul, Republic of Korea
| | - Scott B Ficarro
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA USA.,Blais Proteomics Center, Dana-Farber Cancer Institute, Boston, MA USA
| | - Yi Zhang
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA USA.,Blais Proteomics Center, Dana-Farber Cancer Institute, Boston, MA USA
| | - Byung Il Lee
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA USA.,Biomolecular Function Research Branch, Division of Convergence Technology, Research Institute, National Cancer Center, Goyang, Gyeonggi Republic of Korea
| | - Ahye Cho
- Samsung Genome Institute, Samsung Medical Center, Seoul, Republic of Korea.,Samsung Advanced Institute for Health Sciences and Technology, SungKyunKwan University, Seoul, Republic of Korea
| | - Kihong Kim
- Samsung Advanced Institute for Health Sciences and Technology, SungKyunKwan University, Seoul, Republic of Korea
| | - Angela K J Park
- Samsung Genome Institute, Samsung Medical Center, Seoul, Republic of Korea.,Samsung Advanced Institute for Health Sciences and Technology, SungKyunKwan University, Seoul, Republic of Korea
| | - Woong-Yang Park
- Samsung Genome Institute, Samsung Medical Center, Seoul, Republic of Korea.,Samsung Advanced Institute for Health Sciences and Technology, SungKyunKwan University, Seoul, Republic of Korea
| | | | - Matthew Meyerson
- Broad Institute of Harvard and MIT, Cambridge, MA USA.,Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA USA.,Department of Pathology, Harvard Medical School, Boston, MA USA
| | - Rameen Beroukhim
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA USA.,Broad Institute of Harvard and MIT, Cambridge, MA USA.,Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA USA.,Department of Medicine, Harvard Medical School, Boston, MA USA
| | - Jarrod A Marto
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA USA.,Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA USA.,Blais Proteomics Center, Dana-Farber Cancer Institute, Boston, MA USA
| | - Jeonghee Cho
- Samsung Genome Institute, Samsung Medical Center, Seoul, Republic of Korea.,Samsung Advanced Institute for Health Sciences and Technology, SungKyunKwan University, Seoul, Republic of Korea
| | - Michael J Eck
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA USA.,Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA USA
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42
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Lee BI, Lee S, Suh YS, Lee JS, Kim A, Kwon O, Yu K, Park CB. Photoexcited Porphyrins as a Strong Suppressor of β‐Amyloid Aggregation and Synaptic Toxicity. Angew Chem Int Ed Engl 2015; 54:11472-6. [DOI: 10.1002/anie.201504310] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 06/22/2015] [Indexed: 12/20/2022]
Affiliation(s)
- Byung Il Lee
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Science Road, Daejeon 305‐701 (Republic of Korea)
| | - Seongsoo Lee
- Neurophysiology Research Group, Bionano Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Department of Functional Genomics, Korea University of Science and Technology (UST), Daejeon 305‐333 (Korea)
- Gwangju Center, Korea Basic Science Institute (KBSI), Gwangju 500‐757 (Korea)
| | - Yoon Seok Suh
- Neurophysiology Research Group, Bionano Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Department of Functional Genomics, Korea University of Science and Technology (UST), Daejeon 305‐333 (Korea)
| | - Joon Seok Lee
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Science Road, Daejeon 305‐701 (Republic of Korea)
| | - Ae‐kyeong Kim
- Neurophysiology Research Group, Bionano Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Department of Functional Genomics, Korea University of Science and Technology (UST), Daejeon 305‐333 (Korea)
| | - O‐Yu Kwon
- Department of Anatomy, College of Medicine, Chungnam National University, Daejeon 301‐747 (Korea)
| | - Kweon Yu
- Neurophysiology Research Group, Bionano Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Department of Functional Genomics, Korea University of Science and Technology (UST), Daejeon 305‐333 (Korea)
| | - Chan Beum Park
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Science Road, Daejeon 305‐701 (Republic of Korea)
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43
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Lee BI, Lee S, Suh YS, Lee JS, Kim AK, Kwon OY, Yu K, Park CB. Photoexcited Porphyrins as a Strong Suppressor of β-Amyloid Aggregation and Synaptic Toxicity. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504310] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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44
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Bong SM, Yang SW, Choi JW, Kim SJ, Lee BI. Crystallization and preliminary X-ray crystallographic analysis of human myotubularin-related protein 1. Acta Crystallogr F Struct Biol Commun 2015; 71:261-5. [PMID: 25760698 DOI: 10.1107/s2053230x15000606] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 01/12/2015] [Indexed: 11/10/2022]
Abstract
Myotubularin-related protein 1 is a phosphatase that dephosphorylates phospholipids such as phosphatidylinositol 3-phosphate or phosphatidylinositol 3,5-bisphosphate. In this study, human MTMR1 was overexpressed in Escherichia coli, purified and crystallized at 277 K using polyethylene glycol 20,000 as a precipitant. Diffraction data were collected to 2.0 Å resolution using synchrotron radiation. The crystals belonged to space group P1, with unit-cell parameters a = 67.219, b = 96.587, c = 97.581 Å, α = 87.597, β = 86.072, γ = 77.327°. Assuming the presence of four molecules in the asymmetric unit, the calculated Matthews coefficient value was 2.61 Å(3) Da(-1) and the corresponding solvent content was 52.9%.
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Affiliation(s)
- Seoung Min Bong
- Biomolecular Function Research Branch, Division of Convergence Technology, Research Institute, National Cancer Center, Goyang, Gyeonggi 411-769, Republic of Korea
| | - Seung Won Yang
- Biomolecular Function Research Branch, Division of Convergence Technology, Research Institute, National Cancer Center, Goyang, Gyeonggi 411-769, Republic of Korea
| | - Ji-Woong Choi
- Biomolecular Function Research Branch, Division of Convergence Technology, Research Institute, National Cancer Center, Goyang, Gyeonggi 411-769, Republic of Korea
| | - Seung Jun Kim
- Medical Proteomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Republic of Korea
| | - Byung Il Lee
- Biomolecular Function Research Branch, Division of Convergence Technology, Research Institute, National Cancer Center, Goyang, Gyeonggi 411-769, Republic of Korea
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45
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An DR, Kim HS, Kim J, Im HN, Yoon HJ, Yoon JY, Jang JY, Hesek D, Lee M, Mobashery S, Kim SJ, Lee BI, Suh SW. Structure of Csd3 from Helicobacter pylori, a cell shape-determining metallopeptidase. Acta Crystallogr D Biol Crystallogr 2015; 71:675-86. [PMID: 25760614 PMCID: PMC4356371 DOI: 10.1107/s1399004715000152] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 01/06/2015] [Indexed: 12/14/2022]
Abstract
Helicobacter pylori is associated with various gastrointestinal diseases such as gastritis, ulcers and gastric cancer. Its colonization of the human gastric mucosa requires high motility, which depends on its helical cell shape. Seven cell shape-determining genes (csd1, csd2, csd3/hdpA, ccmA, csd4, csd5 and csd6) have been identified in H. pylori. Their proteins play key roles in determining the cell shape through modifications of the cell-wall peptidoglycan by the alteration of cross-linking or by the trimming of peptidoglycan muropeptides. Among them, Csd3 (also known as HdpA) is a bifunctional enzyme. Its D,D-endopeptidase activity cleaves the D-Ala(4)-mDAP(3) peptide bond between cross-linked muramyl tetrapeptides and pentapeptides. It is also a D,D-carboxypeptidase that cleaves off the terminal D-Ala(5) from the muramyl pentapeptide. Here, the crystal structure of this protein has been determined, revealing the organization of its three domains in a latent and inactive state. The N-terminal domain 1 and the core of domain 2 share the same fold despite a very low level of sequence identity, and their surface-charge distributions are different. The C-terminal LytM domain contains the catalytic site with a Zn(2+) ion, like the similar domains of other M23 metallopeptidases. Domain 1 occludes the active site of the LytM domain. The core of domain 2 is held against the LytM domain by the C-terminal tail region that protrudes from the LytM domain.
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Affiliation(s)
- Doo Ri An
- Department of Biophysics and Chemical Biology, College of Natural Sciences, Seoul National University, Seoul 151-742, Republic of Korea
| | - Hyoun Sook Kim
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-742, Republic of Korea
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151 742, Republic of Korea
| | - Jieun Kim
- Department of Biophysics and Chemical Biology, College of Natural Sciences, Seoul National University, Seoul 151-742, Republic of Korea
| | - Ha Na Im
- Department of Biophysics and Chemical Biology, College of Natural Sciences, Seoul National University, Seoul 151-742, Republic of Korea
| | - Hye Jin Yoon
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-742, Republic of Korea
| | - Ji Young Yoon
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-742, Republic of Korea
| | - Jun Young Jang
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-742, Republic of Korea
| | - Dusan Hesek
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Mijoon Lee
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Shahriar Mobashery
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Soon-Jong Kim
- Department of Chemistry, Mokpo National University, Chonnam 534-729, Republic of Korea
| | - Byung Il Lee
- Biomolecular Function Research Branch, Division of Convergence Technology, Research Institute, National Cancer Center, Gyeonggi 410-769, Republic of Korea
| | - Se Won Suh
- Department of Biophysics and Chemical Biology, College of Natural Sciences, Seoul National University, Seoul 151-742, Republic of Korea
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-742, Republic of Korea
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Kim S, Kim KY, Park JK, Lee BI, Kim YG, Park S. Overproduction, crystallization and preliminary X-ray crystallographic analysis of Escherichia coli tRNA N6-threonylcarbamoyladenosine dehydratase. Acta Crystallogr F Struct Biol Commun 2014; 70:1517-20. [PMID: 25372820 DOI: 10.1107/s2053230x14020883] [Citation(s) in RCA: 3] [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] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 09/17/2014] [Indexed: 11/10/2022]
Abstract
Escherichia coli tRNA N6-threonylcarbamoyladenosine dehydratase (TcdA), previously called CsdL or YgdL, was overproduced and purified from E. coli and crystallized using polyethylene glycol 3350 as a crystallizing agent. X-ray diffraction data were collected to 2.70 Å resolution under cryoconditions using synchrotron X-rays. The crystals belonged to space group P2₁, with unit-cell parameters a=65.4, b=96.8, c=83.3 Å, β=111.7°. According to the Matthews coefficient, the asymmetric unit may contain up to four subunits of the monomeric protein, with a crystal volume per protein mass (VM) of 2.12 Å3 Da(-1) and 42.1% solvent content.
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Affiliation(s)
- Sunmin Kim
- School of Systems Biomedical Science, Soongsil University, Seoul 156-743, Republic of Korea
| | - Keon Young Kim
- School of Systems Biomedical Science, Soongsil University, Seoul 156-743, Republic of Korea
| | - Jeong Kuk Park
- School of Systems Biomedical Science, Soongsil University, Seoul 156-743, Republic of Korea
| | - Byung Il Lee
- Biomolecular Function Research Branch, Division of Convergence Technology, Research Institute, National Cancer Center, Goyang, Gyeonggi 410-769, Republic of Korea
| | - Yun-Gon Kim
- Department of Chemical Engineering, Soongsil University, Seoul 156-743, Republic of Korea
| | - SangYoun Park
- School of Systems Biomedical Science, Soongsil University, Seoul 156-743, Republic of Korea
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Kim HS, Kim J, Im HN, An DR, Lee M, Hesek D, Mobashery S, Kim JY, Cho K, Yoon HJ, Han BW, Lee BI, Suh SW. Structural basis for the recognition of muramyltripeptide by Helicobacter pylori Csd4, a D,L-carboxypeptidase controlling the helical cell shape. ACTA ACUST UNITED AC 2014; 70:2800-12. [PMID: 25372672 PMCID: PMC4220969 DOI: 10.1107/s1399004714018732] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 08/18/2014] [Indexed: 01/01/2023]
Abstract
H. pylori Csd4 (HP1075), together with other peptidoglycan hydrolases, plays an important role in determining the helical cell shape. Its crystal structure has been determined in three different forms. Helicobacter pylori infection causes a variety of gastrointestinal diseases, including peptic ulcers and gastric cancer. Its colonization of the gastric mucosa of the human stomach is a prerequisite for survival in the stomach. Colonization depends on its motility, which is facilitated by the helical shape of the bacterium. In H. pylori, cross-linking relaxation or trimming of peptidoglycan muropeptides affects the helical cell shape. Csd4 has been identified as one of the cell shape-determining peptidoglycan hydrolases in H. pylori. It is a Zn2+-dependent d,l-carboxypeptidase that cleaves the bond between the γ-d-Glu and the mDAP of the non-cross-linked muramyltripeptide (muramyl-l-Ala-γ-d-Glu-mDAP) of the peptidoglycan to produce the muramyldipeptide (muramyl-l-Ala-γ-d-Glu) and mDAP. Here, the crystal structure of H. pylori Csd4 (HP1075 in strain 26695) is reported in three different states: the ligand-unbound form, the substrate-bound form and the product-bound form. H. pylori Csd4 consists of three domains: an N-terminal d,l-carboxypeptidase domain with a typical carboxypeptidase fold, a central β-barrel domain with a novel fold and a C-terminal immunoglobulin-like domain. The d,l-carboxypeptidase domain recognizes the substrate by interacting primarily with the terminal mDAP moiety of the muramyltripeptide. It undergoes a significant structural change upon binding either mDAP or the mDAP-containing muramyltripeptide. It it also shown that Csd5, another cell-shape determinant in H. pylori, is capable of interacting not only with H. pylori Csd4 but also with the dipeptide product of the reaction catalyzed by Csd4.
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Affiliation(s)
- Hyoun Sook Kim
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Jieun Kim
- Department of Biophysics and Chemical Biology, College of Natural Sciences, Seoul National University, Seoul 151-742, Republic of Korea
| | - Ha Na Im
- Department of Biophysics and Chemical Biology, College of Natural Sciences, Seoul National University, Seoul 151-742, Republic of Korea
| | - Doo Ri An
- Department of Biophysics and Chemical Biology, College of Natural Sciences, Seoul National University, Seoul 151-742, Republic of Korea
| | - Mijoon Lee
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Dusan Hesek
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Shahriar Mobashery
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Jin Young Kim
- Division of Mass Spectrometry, Korea Basic Science Institute, Chungbuk 363-883, Republic of Korea
| | - Kun Cho
- Division of Mass Spectrometry, Korea Basic Science Institute, Chungbuk 363-883, Republic of Korea
| | - Hye Jin Yoon
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-742, Republic of Korea
| | - Byung Woo Han
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea
| | - Byung Il Lee
- Biomolecular Function Research Branch, Division of Convergence Technology, Research Institute, National Cancer Center, Gyeonggi 410-769, Republic of Korea
| | - Se Won Suh
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-742, Republic of Korea
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Kim JH, Shim J, Ji MJ, Jung Y, Bong SM, Jang YJ, Yoon EK, Lee SJ, Kim KG, Kim YH, Lee C, Lee BI, Kim KT. The condensin component NCAPG2 regulates microtubule-kinetochore attachment through recruitment of Polo-like kinase 1 to kinetochores. Nat Commun 2014; 5:4588. [PMID: 25109385 DOI: 10.1038/ncomms5588] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 07/03/2014] [Indexed: 12/21/2022] Open
Abstract
The early event of microtubule-kinetochore attachment is a critical stage for precise chromosome segregation. Here we report that NCAPG2, which is a component of the condensin II complex, mediates chromosome segregation through microtubule-kinetochore attachment by recruiting PLK1 to prometaphase kinetochores. NCAPG2 colocalizes with PLK1 at prometaphase kinetochores and directly interacts with the polo-box domain (PBD) of PLK1 via its highly conserved C-terminal region. In both humans and Caenorhabditis elegans, when NCAPG2 is depleted, the attachment of the spindle to the kinetochore is loosened and misoriented. This is caused by the disruption of PLK1 localization to the kinetochore and by the decreased phosphorylation of its kinetochore substrate, BubR1. In addition, the crystal structure of the PBD of PLK1, in complex with the C-terminal region of NCAPG2, (1007)VLS-pT-L(1011), exhibits structural conservation of PBD-phosphopeptides, suggesting that the regulation of NCAPG2 function is phosphorylation-dependent. These findings suggest that NCAPG2 plays an important role in regulating proper chromosome segregation through a functional interaction with PLK1 during mitosis.
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Affiliation(s)
- Jae Hyeong Kim
- 1] Research Institute, National Cancer Center, Goyang, Gyeonggi 410-769, Republic of Korea [2]
| | - Jaegal Shim
- 1] Research Institute, National Cancer Center, Goyang, Gyeonggi 410-769, Republic of Korea [2]
| | - Min-Ju Ji
- Research Institute, National Cancer Center, Goyang, Gyeonggi 410-769, Republic of Korea
| | - Yuna Jung
- Research Institute, National Cancer Center, Goyang, Gyeonggi 410-769, Republic of Korea
| | - Seoung Min Bong
- Research Institute, National Cancer Center, Goyang, Gyeonggi 410-769, Republic of Korea
| | - Young-Joo Jang
- Laboratory of Cell Cycle and Signal Transduction, Department of Nanobiomedical Science and BK21 PLUS Research Center for Regenerative Medicine, Dankook University, Cheonan, Chungnam 330-714, Republic of Korea
| | - Eun-Kyung Yoon
- Research Institute, National Cancer Center, Goyang, Gyeonggi 410-769, Republic of Korea
| | - Sang-Jin Lee
- Research Institute, National Cancer Center, Goyang, Gyeonggi 410-769, Republic of Korea
| | - Kwang Gi Kim
- Research Institute, National Cancer Center, Goyang, Gyeonggi 410-769, Republic of Korea
| | - Yon Hui Kim
- Research Institute, National Cancer Center, Goyang, Gyeonggi 410-769, Republic of Korea
| | - Changwoo Lee
- Department of Molecular Cell Biology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, Gyeonggi 440-746, Republic of Korea
| | - Byung Il Lee
- Research Institute, National Cancer Center, Goyang, Gyeonggi 410-769, Republic of Korea
| | - Kyung-Tae Kim
- Research Institute, National Cancer Center, Goyang, Gyeonggi 410-769, Republic of Korea
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Kim HS, Han BW, Lee BI, Suh SW. Structural basis for the peptidoglycan recognition by Helicobacter pylori Csd4. Acta Crystallogr A Found Adv 2014. [DOI: 10.1107/s2053273314091827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Helicobacter pylori infection causes a variety of gastrointestinal diseases including peptic ulcers and gastric cancer. The colonization of this bacterium in the gastric mucosa is required for the survival in the stomach. Its colonization of the gastric mucosa of human stomach depends on its motility, which is facilitated by the helical cell shape. In H. pylori, crosslinking relaxation or trimming of peptidoglycan muropeptide affects the helical shape. Among several cell shape-determining peptidoglycan hydrolases identified in H. pylori, Csd4 is a Zn2+-dependent D,L-carboxypeptidase that cleaves the bond between the γ-D-Glu and mDAP bond of the uncrosslinked tripeptide of peptidoglycan (L-Ala-γ-D-Glu-mDAP) to produce L-Ala-γ-D-Glu dipeptide and mDAP, promoting the helical cell shape. Inhibition of D,L-carboxypeptidase activity of Csd4 may represent a novel therapeutic approach. We report here the crystal structures of H. pylori Csd4 in three different states: the ligand-free form, the substrate-bound form, and the product-bound form. H. pylori Csd4 consists of three domains: an N-terminal D,L-carboxypeptidase domain, a novel β-barrel domain, and a C-terminal immunoglobulin-like domain. Our ligand-bound structures provide structural basis of peptidoglycan recognition by D,L-carboxypeptidase. H. pylori Csd4 recognizes primarily the terminal mDAP of the tripeptide substrate and undergoes a significant structural change upon binding either mDAP or mDAP-containing tripeptide.
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Lee M, Kim JU, Lee JS, Lee BI, Shin J, Park CB. Mussel-inspired plasmonic nanohybrids for light harvesting. Adv Mater 2014; 26:4463-4468. [PMID: 24623446 DOI: 10.1002/adma.201305766] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 01/27/2014] [Indexed: 06/03/2023]
Abstract
Core-shell plasmonic nanohybrids are synthesized through a simple solutionbased process utilizing mussel-inspired polydopamine (PDA). The multi-purpose PDA not only facilitates plasmonic metal formation, but also serves as a scaffold to incorporate photosensitizers around the metal cores, as well as an adhesive between the nanohybrids and the substrate. The resulting plasmonic assembly exhibits highly enhanced light absorption in photo catalytic systems to augment artificial photosynthesis.
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Affiliation(s)
- Minah Lee
- Department of Materials Science and Engineering, KAIST Institute for NanoCentury, KAIST, Daejeon, 305-701, Republic of Korea
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