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Sorraksa N, Kaokaen P, Kunhorm P, Heebkaew N, Promjantuek W, Noisa P. Rapid induction of dopaminergic neuron-like cells from human fibroblasts by autophagy activation with only 2-small molecules. 3 Biotech 2024; 14:115. [PMID: 38524239 PMCID: PMC10954591 DOI: 10.1007/s13205-024-03957-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 02/08/2024] [Indexed: 03/26/2024] Open
Abstract
The dopaminergic neurons are responsible for the release of dopamine. Several diseases that affect motor function, including Parkinson's disease (PD), are rooted in inadequate dopamine (DA) neurotransmission. The study's goal was to create a quick way to make dopaminergic neuron-like cells from human fibroblasts (hNF) using only two small molecules: hedgehog pathway inhibitor 1 (HPI-1) and neurodazine (NZ). Two small compounds have been shown to induce the transdifferentiation of hNF cells into dopaminergic neuron-like cells. After 10 days of treatment, hNF cells had a big drop in fibroblastic markers (Col1A1, KRT18, and Elastin) and a rise in neuron marker genes (TUJ1, PAX6, and SOX1). Different proteins and factors related to dopaminergic neurons (TH, TUJ1, and dopamine) were significantly increased in cells that behave like dopaminergic neurons after treatment. A study of the autophagy signaling pathway showed that apoptotic genes were downregulated while autophagy genes (LC3, ATG5, and ATG12) were significantly upregulated. Our results showed that treating hNF cells with both HPI-1 and NZ together can quickly change them into mature neurons that have dopaminergic activity. However, the current understanding of the underlying mechanisms involved in nerve guidance remains unstable and complex. Ongoing research in this field must continue to advance for a more in-depth understanding. This is crucial for the safe and highly effective clinical application of the knowledge gained to promote neural regeneration in different neurological diseases.
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Affiliation(s)
- Natchadaporn Sorraksa
- Laboratory of Cell-Based Assays and Innovations, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, 111 University Avenue, Nakhon Ratchasima, 30000 Thailand
| | - Palakorn Kaokaen
- Laboratory of Cell-Based Assays and Innovations, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, 111 University Avenue, Nakhon Ratchasima, 30000 Thailand
| | - Phongsakorn Kunhorm
- Laboratory of Cell-Based Assays and Innovations, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, 111 University Avenue, Nakhon Ratchasima, 30000 Thailand
| | - Nudjanad Heebkaew
- Laboratory of Cell-Based Assays and Innovations, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, 111 University Avenue, Nakhon Ratchasima, 30000 Thailand
| | - Wilasinee Promjantuek
- Laboratory of Cell-Based Assays and Innovations, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, 111 University Avenue, Nakhon Ratchasima, 30000 Thailand
| | - Parinya Noisa
- Laboratory of Cell-Based Assays and Innovations, School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, 111 University Avenue, Nakhon Ratchasima, 30000 Thailand
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2
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Brusa I, Sondo E, Falchi F, Pedemonte N, Roberti M, Cavalli A. Proteostasis Regulators in Cystic Fibrosis: Current Development and Future Perspectives. J Med Chem 2022; 65:5212-5243. [PMID: 35377645 PMCID: PMC9014417 DOI: 10.1021/acs.jmedchem.1c01897] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In cystic fibrosis (CF), the deletion of phenylalanine 508 (F508del) in the CF transmembrane conductance regulator (CFTR) leads to misfolding and premature degradation of the mutant protein. These defects can be targeted with pharmacological agents named potentiators and correctors. During the past years, several efforts have been devoted to develop and approve new effective molecules. However, their clinical use remains limited, as they fail to fully restore F508del-CFTR biological function. Indeed, the search for CFTR correctors with different and additive mechanisms has recently increased. Among them, drugs that modulate the CFTR proteostasis environment are particularly attractive to enhance therapy effectiveness further. This Perspective focuses on reviewing the recent progress in discovering CFTR proteostasis regulators, mainly describing the design, chemical structure, and structure-activity relationships. The opportunities, challenges, and future directions in this emerging and promising field of research are discussed, as well.
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Affiliation(s)
- Irene Brusa
- Department of Pharmacy and Biotechnology, University of Bologna, 40126 Bologna, Italy.,Computational & Chemical Biology, Istituto Italiano di Tecnologia, 16163 Genova, Italy
| | - Elvira Sondo
- UOC Genetica Medica, IRCCS Istituto Giannina Gaslini, 16147 Genova, Italy
| | | | | | - Marinella Roberti
- Department of Pharmacy and Biotechnology, University of Bologna, 40126 Bologna, Italy
| | - Andrea Cavalli
- Department of Pharmacy and Biotechnology, University of Bologna, 40126 Bologna, Italy.,Computational & Chemical Biology, Istituto Italiano di Tecnologia, 16163 Genova, Italy
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3
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Shin I, Li H, Lee CH. A Thiol-Activated Fluorogenic Probe for Detection of a Target Protein. Chem Commun (Camb) 2022; 58:6336-6339. [DOI: 10.1039/d2cc02029g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel fluorogenic probe for facile and efficient detection of a target protein that binds to a bioactive small molecule was developed. The probe was composed of a thiol-activated fluorogenic...
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Asressu KH, Chan CK, Wang CC. TMSOTf-catalyzed synthesis of trisubstituted imidazoles using hexamethyldisilazane as a nitrogen source under neat and microwave irradiation conditions. RSC Adv 2021; 11:28061-28071. [PMID: 35480777 PMCID: PMC9039414 DOI: 10.1039/d1ra05802a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 08/12/2021] [Indexed: 12/15/2022] Open
Abstract
In the process of drug discovery and development, an efficient and expedient synthetic method for imidazole-based small molecules from commercially available and cheap starting materials has great significance. Herein, we developed a TMSOTf-catalyzed synthesis of trisubstituted imidazoles through the reaction of 1,2-diketones and aldehydes using hexamethyldisilazane as a nitrogen source under microwave heating and solvent-free conditions. The chemical structures of representative trisubstituted imidazoles were confirmed using X-ray single-crystal diffraction analysis. This synthetic method has several advantages including the involvement of mild Lewis acid, being metal- and additive-free, wide substrate scope with good to excellent yields and short reaction time. Furthermore, we demonstrate the application of the methodology in the synthesis of biologically active imidazole-based drugs. Trisubstituted imidazoles are synthesized efficiently from the readily available 1,2-diketones and aldehydes using hexamethyldisilazane as a new and stable nitrogen source under TMSOTf-catalysis system, microwave heating and solvent-free conditions.![]()
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Affiliation(s)
| | - Chieh-Kai Chan
- Institute of Chemistry, Academia Sinica Taipei 115 Taiwan
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5
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Lobana TS. Heterocyclic-2-thione derivatives of group 10–12 metals: Coordination versatility, activation of C S (thione) bonds and biochemical potential. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213884] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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6
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Park SH, Shin I, Kim GH, Ko SK, Shin I. An Autophagy-Disrupting Small Molecule Promotes Cancer Cell Death via Caspase Activation. Chembiochem 2021; 22:3425-3430. [PMID: 34263972 DOI: 10.1002/cbic.202100296] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/14/2021] [Indexed: 12/15/2022]
Abstract
A novel autophagy inhibitor, autophazole (Atz), which promoted cancer cell death via caspase activation, is described. This compound was identified from cell-based high-content screening of an imidazole library. The results showed that Atz was internalized into lysosomes of cells where it induced lysosomal membrane permeabilization (LMP). This process generated nonfunctional autolysosomes, thereby inhibiting autophagy. In addition, Atz was found to promote LMP-mediated apoptosis. Specifically, LMP induced by Atz caused release of cathepsins from lysosomes into the cytosol. Cathepsins in the cytosol cleaved Bid to generate tBid, which subsequently activated Bax to induce mitochondrial outer membrane permeabilization (MOMP). This event led to cancer cell death via caspase activation. Overall, the findings suggest that Atz will serve as a new chemical probe in efforts aimed at gaining a better understanding of the autophagic process.
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Affiliation(s)
- Sang-Hyun Park
- Department of Chemistry, Yonsei University, Seoul, 03722, South Korea
| | - Insu Shin
- Department of Chemistry, Yonsei University, Seoul, 03722, South Korea
| | - Gun-Hee Kim
- Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, 28116, South Korea
| | - Sung-Kyun Ko
- Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, 28116, South Korea
| | - Injae Shin
- Department of Chemistry, Yonsei University, Seoul, 03722, South Korea
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Augustine R, Dan P, Hasan A, Khalaf IM, Prasad P, Ghosal K, Gentile C, McClements L, Maureira P. Stem cell-based approaches in cardiac tissue engineering: controlling the microenvironment for autologous cells. Biomed Pharmacother 2021; 138:111425. [PMID: 33756154 DOI: 10.1016/j.biopha.2021.111425] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 02/08/2021] [Accepted: 02/21/2021] [Indexed: 02/07/2023] Open
Abstract
Cardiovascular disease is one of the leading causes of mortality worldwide. Cardiac tissue engineering strategies focusing on biomaterial scaffolds incorporating cells and growth factors are emerging as highly promising for cardiac repair and regeneration. The use of stem cells within cardiac microengineered tissue constructs present an inherent ability to differentiate into cell types of the human heart. Stem cells derived from various tissues including bone marrow, dental pulp, adipose tissue and umbilical cord can be used for this purpose. Approaches ranging from stem cell injections, stem cell spheroids, cell encapsulation in a suitable hydrogel, use of prefabricated scaffold and bioprinting technology are at the forefront in the field of cardiac tissue engineering. The stem cell microenvironment plays a key role in the maintenance of stemness and/or differentiation into cardiac specific lineages. This review provides a detailed overview of the recent advances in microengineering of autologous stem cell-based tissue engineering platforms for the repair of damaged cardiac tissue. A particular emphasis is given to the roles played by the extracellular matrix (ECM) in regulating the physiological response of stem cells within cardiac tissue engineering platforms.
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Affiliation(s)
- Robin Augustine
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, 2713, Doha, Qatar; Biomedical Research Center (BRC), Qatar University, PO Box 2713, Doha, Qatar.
| | - Pan Dan
- Department of Cardiovascular and Transplantation Surgery, Regional Central Hospital of Nancy, Lorraine University, Nancy 54500, France; Department of Thoracic and Cardiovascular Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Anwarul Hasan
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, 2713, Doha, Qatar; Biomedical Research Center (BRC), Qatar University, PO Box 2713, Doha, Qatar.
| | | | - Parvathy Prasad
- International and Inter University Center for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam, Kerala 686560, India
| | - Kajal Ghosal
- Dr. B. C. Roy College of Pharmacy and AHS, Durgapur 713206, India
| | - Carmine Gentile
- School of Biomedical Engineering, Faculty of Engineering and IT, University of Technology Sydney, NSW 2007, Australia; School of Medicine, Faculty of Medicine and Health, University of Sydney, NSW 2000, Australia; Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Lana McClements
- School of Life Sciences, Faculty of Science, University of Technology Sydney, NSW 2007, Australia
| | - Pablo Maureira
- Department of Cardiovascular and Transplantation Surgery, Regional Central Hospital of Nancy, Lorraine University, Nancy 54500, France
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Nikitina PA, Koldaeva TY, Zakharko MA, Perevalov VP. Synthesis and Study of Prototropic Tautomerism of 2-(2-Furyl)-1-hydroxyimidazoles. Aust J Chem 2020. [DOI: 10.1071/ch20044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Novel 2-(2-furyl)imidazole derivatives were synthesised. 2-(2-Furyl)-1-methoxyimidazoles and 2-(2-furyl)-1-methylimidazole 3-oxides were used as model compounds in the study of the prototropic tautomerism of 2-(2-furyl)-1-hydroxyimidazoles by means of 1H, 13C NMR and UV/vis spectroscopies. It was demonstrated that the interaction of the π-excessive furyl moiety with an electron-withdrawing carbonyl group in position 5 of imidazole stabilised the N-hydroxy tautomeric form in both deuterated chloroform and d6-DMSO. In ethanol the N-oxide tautomer is also present along with the prevailing N-hydroxyimidazole.
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Rossi R, Ciofalo M. Current Advances in the Synthesis and Biological Evaluation of Pharmacologically Relevant 1,2,4,5-Tetrasubstituted-1H-Imidazole Derivatives. CURR ORG CHEM 2019. [DOI: 10.2174/1385272823666191014154129] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
:
In recent years, the synthesis and evaluation of the
biological properties of 1,2,4,5-tetrasubstituted-1H-imidazole
derivatives have been the subject of a large number of studies
by academia and industry. In these studies it has been shown
that this large and highly differentiated class of heteroarene
derivatives includes high valuable compounds having important
biological and pharmacological properties such as
antibacterial, antifungal, anthelmintic, anti-inflammatory, anticancer,
antiviral, antihypertensive, cholesterol-lowering, antifibrotic,
antiuricemic, antidiabetic, antileishmanial and antiulcer
activities.
:
The present review with 411 references, in which we focused on the literature data published mainly from 2011
to 2017, aims to update the readers on the recent developments on the synthesis and biological evaluation of
pharmacologically relevant 1,2,4,5-tetrasubstituted-1H-imidazole derivatives with an emphasis on their different
molecular targets and their potential use as drugs to treat various types of diseases. Reference was also
made to substantial literature data acquired before 2011 in this burgeoning research area.
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Affiliation(s)
- Renzo Rossi
- Dipartimento di Chimica e Chimica Industriale, University of Pisa - via Moruzzi, 3, I-56124 Pisa, Italy
| | - Maurizio Ciofalo
- Dipartimento di Scienze Agrarie, Alimentari e Forestali, University of Palermo - Viale delle Scienze, Edificio 4, I-90128 Palermo, Italy
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10
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Naskar S, Kumaran V, Markandeya YS, Mehta B, Basu B. Neurogenesis-on-Chip: Electric field modulated transdifferentiation of human mesenchymal stem cell and mouse muscle precursor cell coculture. Biomaterials 2019; 226:119522. [PMID: 31669894 DOI: 10.1016/j.biomaterials.2019.119522] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 09/19/2019] [Accepted: 09/23/2019] [Indexed: 12/21/2022]
Abstract
A number of bioengineering strategies, using biophysical stimulation, are being explored to guide the human mesenchymal stem cells (hMScs) into different lineages. In this context, we have limited understanding on the transdifferentiation of matured cells to another functional-cell type, when grown with stem cells, in a constrained cellular microenvironment under biophysical stimulation. While addressing such aspects, the present work reports the influence of the electric field (EF) stimulation on the phenotypic and functionality modulation of the coculture of murine myoblasts (C2C12) with hMScs [hMSc:C2C12=1:10] in a custom designed polymethylmethacrylate (PMMA) based microfluidic device with in-built metal electrodes. The quantitative and qualitative analysis of the immunofluorescence study confirms that the cocultured cells in the conditioned medium with astrocytic feed, exhibit differentiation towards neural-committed cells under biophysical stimulation in the range of the endogenous physiological electric field strength (8 ± 0.06 mV/mm). The control experiments using similar culture protocols revealed that while C2C12 monoculture exhibited myotube-like fused structures, the hMScs exhibited the neurosphere-like clusters with SOX2, nestin, βIII-tubulin expression. The electrophysiological study indicates the significant role of intercellular calcium signalling among the differentiated cells towards transdifferentiation. Furthermore, the depolarization induced calcium influx strongly supports neural-like behaviour for the electric field stimulated cells in coculture. The intriguing results are explained in terms of the paracrine signalling among the transdifferentiated cells in the electric field stimulated cellular microenvironment. In summary, the present study establishes the potential for neurogenesis on-chip for the coculture of hMSc and C2C12 cells under tailored electric field stimulation, in vitro.
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Affiliation(s)
- Sharmistha Naskar
- Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, 560012, India; Department of Chemical Engineering, Indian Institute of Science, Bangalore, 560012, India; Laboratory for Biomaterials, Materials Research Centre, Indian Institute of Science, Bangalore, 560012, India; Centres of Excellence and Innovation in Biotechnology - Translational Centre on Biomaterials for Orthopaedic and Dental Applications, Materials Research Centre, IISc, Bangalore, India
| | - Viswanathan Kumaran
- Department of Chemical Engineering, Indian Institute of Science, Bangalore, 560012, India
| | - Yogananda S Markandeya
- Department of Biophysics, National Institute of Mental Health and Neurosciences, Bangalore, 560029, India
| | - Bhupesh Mehta
- Department of Biophysics, National Institute of Mental Health and Neurosciences, Bangalore, 560029, India
| | - Bikramjit Basu
- Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, 560012, India; Laboratory for Biomaterials, Materials Research Centre, Indian Institute of Science, Bangalore, 560012, India; Centres of Excellence and Innovation in Biotechnology - Translational Centre on Biomaterials for Orthopaedic and Dental Applications, Materials Research Centre, IISc, Bangalore, India.
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Tuttle RR, Rubin HN, Rithner CD, Finke RG, Reynolds MM. Copper ion vs copper metal-organic framework catalyzed NO release from bioavailable S-Nitrosoglutathione en route to biomedical applications: Direct 1H NMR monitoring in water allowing identification of the distinct, true reaction stoichiometries and thiol dependencies. J Inorg Biochem 2019; 199:110760. [PMID: 31349071 DOI: 10.1016/j.jinorgbio.2019.110760] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 06/24/2019] [Accepted: 07/07/2019] [Indexed: 01/23/2023]
Abstract
Copper containing compounds catalyze decomposition of S-Nitrosoglutathione (GSNO) in the presence of glutathione (GSH) yielding glutathione disulfide (GSSG) and nitric oxide (NO). Extended NO generation from an endogenous source is medically desirable to achieve vasodilation, reduction in biofilms on medical devices, and antibacterial activity. Homogeneous and heterogeneous copper species catalyze release of NO from endogenous GSNO. One heterogeneous catalyst used for GSNO decomposition in blood plasma is the metal-organic framework (MOF), H3[(Cu4Cl)3-(BTTri)8, H3BTTri = 1,3,5-tris(1H-1,2,3-triazol-5-yl) benzene] (CuBTTri). Fundamental questions about these systems remain unanswered, despite their use in biomedical applications, in part because no method previously existed for simultaneous tracking of [GSNO], [GSH], and [GSSG] in water. Tracking these reactions in water is a necessary step towards study in biological media (blood is approximately 80% water) where NO release systems must operate. Even the balanced stoichiometry remains unknown for copper-ion and CuBTTri catalyzed GSNO decomposition. Herein, we report a direct 1H NMR method which: simultaneously monitors [GSNO], [GSH], and [GSSG] in water; provides the experimentally determined stoichiometry for copper-ion vs CuBTTri catalyzed GSNO decomposition; reveals that the CuBTTri-catalyzed reaction reaches 10% GSNO decomposition (16 h) without added GSH, yet the copper-ion catalyzed reaction reaches 100% GSNO decomposition (16 h) without added GSH; and shows 100% GSNO decomposition upon addition of stoichiometric GSH to the CuBTTri catalyzed reaction. These observations provide evidence that copper-ion and CuBTTri catalyzed GSNO decomposition in water operate through different reaction mechanisms, the details of which can now be probed by 1H NMR kinetics and other needed studies.
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Affiliation(s)
- Robert R Tuttle
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, United States
| | - Heather N Rubin
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, United States
| | - Christopher D Rithner
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, United States
| | - Richard G Finke
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, United States
| | - Melissa M Reynolds
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, United States; School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, United States; Department of Chemical & Biological Engineering, Colorado State University, Fort Collins, CO 80523, United States.
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Sobechko I, Horak Y, Dibrivnyi V, Obushak M, Goshko L. Thermodynamic Properties of 2-Methyl-5-arylfuran-3 Carboxylic Acids Chlorine Derivatives in Organic Solvents. CHEMISTRY & CHEMICAL TECHNOLOGY 2019. [DOI: 10.23939/chcht13.03.280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Rossi R, Angelici G, Casotti G, Manzini C, Lessi M. Catalytic Synthesis of 1,2,4,5‐Tetrasubstituted 1
H
‐Imidazole Derivatives: State of the Art. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801381] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Renzo Rossi
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| | - Gaetano Angelici
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| | - Gianluca Casotti
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| | - Chiara Manzini
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
| | - Marco Lessi
- Dipartimento di Chimica e Chimica IndustrialeUniversity of Pisa via G. Moruzzi 13 56124 Pisa Italy
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Sundar S, Rengan R. Direct synthesis of 2,4,5-trisubstituted imidazoles from primary alcohols by diruthenium(ii) catalysts under aerobic conditions. Org Biomol Chem 2019; 17:1402-1409. [DOI: 10.1039/c8ob02785d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A straightforward synthetic approach to 2,4,5-trisubstituted imidazoles from readily available primary alcohols using arene diruthenium(ii) catalysts has been described.
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Affiliation(s)
- Saranya Sundar
- Centre for Organometallic Chemistry
- School of Chemistry
- Bharathidasan University
- Tiruchirappalli 620 024
- India
| | - Ramesh Rengan
- Centre for Organometallic Chemistry
- School of Chemistry
- Bharathidasan University
- Tiruchirappalli 620 024
- India
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15
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Sobechko I, Dibrivnyi V, Horak Y, Velychkivska N, Kochubei V, Obushak M. Thermodynamic properties of solubility of 2-methyl-5-arylfuran-3-carboxylic acids in organic solvents. CHEMISTRY & CHEMICAL TECHNOLOGY 2017. [DOI: 10.23939/chcht11.04.397] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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16
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Sobechko I, Chetverzhuk Y, Horak Y, Serheyev V, Kochubei V, Velychkivska N. THERMODYNAMIC PROPERTIES OF 2-CYANO-3-[5-(PHENYL)-2-FURYL]-2-PROPENAMIDE AND 2-CYANO-3-[5-(4-METHYLPHENYL)-2-FURYL]-2-PROPENAMIDE SOLUTIONS IN ORGANIC SOLVENTS. CHEMISTRY & CHEMICAL TECHNOLOGY 2017. [DOI: 10.23939/chcht11.02.131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Tjutrins J, Arndtsen BA. A palladium-catalyzed synthesis of (hetero)aryl-substituted imidazoles from aryl halides, imines and carbon monoxide. Chem Sci 2017; 8:1002-1007. [PMID: 28451237 PMCID: PMC5354067 DOI: 10.1039/c6sc04371b] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 11/02/2016] [Indexed: 11/21/2022] Open
Abstract
We describe here a tandem catalytic route to prepare imidazoles in a single operation from aryl iodides, imines and CO. The reaction involves a catalytic carbonylation of aryl halides with imines to form 1,3-dipoles, which undergo spontaneous 1,3-dipolar cycloaddition. Overall, this offers an alternative to coupling reactions to construct the (hetero)aryl-imidazole motif, where variation of the building blocks can allow the synthesis of broad families of imidazoles with independent control of all substituents.
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Affiliation(s)
- Jevgenijs Tjutrins
- Department of Chemistry , McGill University , 801 Sherbrooke St. W. , Montreal , QC , Canada H3A 0B8 . ; ; Tel: +1-514-398-6999
| | - Bruce A Arndtsen
- Department of Chemistry , McGill University , 801 Sherbrooke St. W. , Montreal , QC , Canada H3A 0B8 . ; ; Tel: +1-514-398-6999
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18
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Abstract
This review highlights recent advances made using small molecules that promote changes in the fate of cells.
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Affiliation(s)
- Debojyoti De
- Department of Molecular Cell Biology
- Sungkyunkwan University School of Medicine
- Suwon 16419
- Korea
| | | | - Injae Shin
- Department of Chemistry
- Yonsei University
- Seoul 03722
- Korea
| | - Kyeong Kyu Kim
- Department of Molecular Cell Biology
- Sungkyunkwan University School of Medicine
- Suwon 16419
- Korea
- Department of Health Sciences and Technology
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A potent and selective small molecule inhibitor of sirtuin 1 promotes differentiation of pluripotent P19 cells into functional neurons. Sci Rep 2016; 6:34324. [PMID: 27680533 PMCID: PMC5041152 DOI: 10.1038/srep34324] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 09/12/2016] [Indexed: 12/20/2022] Open
Abstract
Sirtuin 1 (SIRT1) is known to suppress differentiation of pluripotent/multipotent cells and neural progenitor cells into neurons by blocking activation of transcription factors critical for neurogenesis. EX-527 is a highly selective and potent inhibitor against SIRT1 and has been used as a chemical probe that modulates SIRT1-associated biological processes. However, the effect of EX-527 on neuronal differentiation in pluripotent cells has not been well elucidated. Here, we report an examination of EX-527 effects on neurogenesis of pluripotent P19 cells. The results showed that EX-527 greatly accelerated differentiation of P19 cells into neurons without generation of cardiac cells and astrocytes. Importantly, neurons derived from P19 cells treated with EX-527 generated voltage-dependent sodium currents and depolarization-induced action potentials. The findings indicate that the differentiated cells have electrophysiological properties. The present study suggests that the selective SIRT1 inhibitor could have the potential of being employed as a chemical inducer to generate functionally active neurons.
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Halder D, Chang GE, De D, Cheong E, Kim KK, Shin I. Combining Suppression of Stemness with Lineage-Specific Induction Leads to Conversion of Pluripotent Cells into Functional Neurons. ACTA ACUST UNITED AC 2016; 22:1512-1520. [PMID: 26590637 DOI: 10.1016/j.chembiol.2015.10.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 10/05/2015] [Accepted: 10/09/2015] [Indexed: 01/16/2023]
Abstract
Sox2 is a key player in the maintenance of pluripotency and stemness, and thus inhibition of its function would abrogate the stemness of pluripotent cells and induce differentiation into several types of cells. Herein we describe a strategy that relies on a combination of Sox2 inhibition with lineage-specific induction to promote efficient and selective differentiation of pluripotent P19 cells into neurons. When P19 cells transduced with Skp protein, an inhibitor of Sox2, are incubated with a neurogenesis inducer, the cells are selectively converted into neurons that generate depolarization-induced sodium currents and action potentials. This finding indicates that the differentiated neurons are electrophysiologically active. Signaling pathway studies lead us to conclude that a combination of Skp with the neurogenesis inducer enhances neurogenesis in P19 cells by activating Wnt and Notch pathways. The present differentiation protocol could be valuable to selectively generate functionally active neurons from pluripotent cells.
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Affiliation(s)
- Debasish Halder
- Department of Chemistry, National Creative Research Initiative Center for Biofunctional Molecules, Yonsei University, Seoul 120-749, Korea
| | - Gyeong-Eon Chang
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul 120-749, Korea
| | - Debojyoti De
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon 440-746, Korea
| | - Eunji Cheong
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul 120-749, Korea
| | - Kyeong Kyu Kim
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon 440-746, Korea.
| | - Injae Shin
- Department of Chemistry, National Creative Research Initiative Center for Biofunctional Molecules, Yonsei University, Seoul 120-749, Korea.
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21
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Cho HJ, Kim GH, Park SH, Hyun JY, Kim NK, Shin I. Probing the effect of an inhibitor of an ATPase domain of Hsc70 on clathrin-mediated endocytosis. MOLECULAR BIOSYSTEMS 2016; 11:2763-9. [PMID: 25728281 DOI: 10.1039/c4mb00695j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Hsc70 is known to be involved in clathrin-mediated endocytosis (CME) by which cells take up various extracellular materials. More specifically, this protein promotes the disassembly of clathrin-coated vesicles (CCVs) by directly binding to clathrin during CME. As the ATPase activity of Hsc70 is required for its association with clathrin, we have investigated the effect of an inhibitor (apoptozole, Az) of an ATPase domain of Hsc70 on CME. The results of biochemical studies show that Az binds to Hsc70 and Hsp70 without binding to other types of heat shock proteins. Structure-activity relationship studies provide information on the structural features responsible for the inhibition of the ATPase activity of Hsc70. The results obtained from cell experiments reveal that Az disrupts the interaction of Hsc70 with clathrin in cells, thereby leading to the accumulation of transferrin in CCVs and suppression of release of free Fe(3+) from CCVs during transferrin receptor-mediated endocytosis.
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Affiliation(s)
- Hyungseoph J Cho
- National Creative Research Initiative Center for Biofunctional Molecules, Department of Chemistry, Yonsei University, Seoul 120-749, Korea.
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22
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Halder D, Kim GH, Shin I. Synthetic small molecules that induce neuronal differentiation in neuroblastoma and fibroblast cells. MOLECULAR BIOSYSTEMS 2016; 11:2727-37. [PMID: 25872738 DOI: 10.1039/c5mb00161g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
An investigation was conducted to demonstrate that neurodazine (Nz) and neurodazole (Nzl), two imidazole-based small molecules, promote neuronal differentiation in both neuroblastoma and fibroblast cells. The results show that differentiated cells generated by treatment with Nz and Nzl express neuron-specific markers. The ability of Nz and Nzl to induce neurogenesis of neuroblastoma and fibroblast cells was found to be comparable to those of the known neurogenic factors, retinoic acid and trichostatin A. In addition, the cells differentiated by Nz and Nzl are observed to express different isoforms of glutamate receptors. The results of signaling pathway studies reveal that two substances enhance neurogenesis in neuroblastoma cells by activating Wnt and Shh signaling pathways and neurogenesis in fibroblast cells by mainly activating the Wnt signaling pathway. Observations made in the present study suggest that Nz and Nzl will serve as chemical tools to generate specific populations of neuronal cells from readily available and simply manageable cells.
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Affiliation(s)
- Debasish Halder
- National Creative Research Initiative Center for Biofunctional Molecules, Department of Chemistry, Yonsei University, Seoul 120-749, Korea.
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23
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A Flavonoid Compound Promotes Neuronal Differentiation of Embryonic Stem Cells via PPAR-β Modulating Mitochondrial Energy Metabolism. PLoS One 2016; 11:e0157747. [PMID: 27315062 PMCID: PMC4912105 DOI: 10.1371/journal.pone.0157747] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Accepted: 06/04/2016] [Indexed: 12/20/2022] Open
Abstract
Relatively little is known regarding mitochondrial metabolism in neuronal differentiation of embryonic stem (ES) cells. By using a small molecule, present research has investigated the pattern of cellular energy metabolism in neural progenitor cells derived from mouse ES cells. Flavonoid compound 4a faithfully facilitated ES cells to differentiate into neurons morphologically and functionally. The expression and localization of peroxisome proliferator-activated receptors (PPARs) were examined in neural progenitor cells. PPAR-β expression showed robust upregulation compared to solvent control. Treatment with PPAR-β agonist L165041 alone or together with compound 4a significantly promoted neuronal differentiation, while antagonist GSK0660 blocked the neurogenesis-promoting effect of compound 4a. Consistently, knockdown of PPAR-β in ES cells abolished compound 4a-induced neuronal differentiation. Interestingly, we found that mitochondrial fusion protein Mfn2 was also abolished by sh-PPAR-β, resulting in abnormal mitochondrial Ca2+ ([Ca2+]M) transients as well as impaired mitochondrial bioenergetics. In conclusion, we demonstrated that by modulating mitochondrial energy metabolism through Mfn2 and mitochondrial Ca2+, PPAR-β took an important role in neuronal differentiation induced by flavonoid compound 4a.
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24
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Ko SK, Kim J, Na DC, Park S, Park SH, Hyun JY, Baek KH, Kim ND, Kim NK, Park YN, Song K, Shin I. A small molecule inhibitor of ATPase activity of HSP70 induces apoptosis and has antitumor activities. ACTA ACUST UNITED AC 2015; 22:391-403. [PMID: 25772468 DOI: 10.1016/j.chembiol.2015.02.004] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 01/20/2015] [Accepted: 02/05/2015] [Indexed: 01/13/2023]
Abstract
The heat shock protein HSP70 plays antiapoptotic and oncogenic roles, and thus its inhibition has been recognized as a potential avenue for anticancer therapy. Here we describe the small molecule, apoptozole (Az), which inhibits the ATPase activity of HSP70 by binding to its ATPase domain and, as a result, induces an array of apoptotic phenotypes in cancer cells. Affinity chromatography provides evidence that Az binds HSP70 but not other types of heat shock proteins including HSP40, HSP60, and HSP90. We also demonstrate that Az induces cancer cell death via caspase-dependent apoptosis by disrupting the interaction of HSP70 with APAF-1. Animal studies indicate that Az treatment retards tumor growth in a xenograft mouse model without affecting mouse viability. These studies suggest that Az will aid the development of new cancer therapies and serve as a chemical probe to gain a better understanding of the diverse functions of HSP70.
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Affiliation(s)
- Sung-Kyun Ko
- Center for Biofunctional Molecules, Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Jiyeon Kim
- Department of Biochemistry, Yonsei University, Seoul 120-749, Korea
| | - Deuk Chae Na
- Department of Pathology, Yonsei University College of Medicine, Seoul 120-752, Korea
| | - Sookil Park
- Center for Biofunctional Molecules, Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Seong-Hyun Park
- Center for Biofunctional Molecules, Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Ji Young Hyun
- Center for Biofunctional Molecules, Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Kyung-Hwa Baek
- Center for Biofunctional Molecules, Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Nam Doo Kim
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu 706-010, Korea
| | - Nak-Kyoon Kim
- Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 136-791, Korea
| | - Young Nyun Park
- Department of Pathology, Yonsei University College of Medicine, Seoul 120-752, Korea
| | - Kiwon Song
- Department of Biochemistry, Yonsei University, Seoul 120-749, Korea
| | - Injae Shin
- Center for Biofunctional Molecules, Department of Chemistry, Yonsei University, Seoul 120-749, Korea.
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25
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Davies SG, Kennewell PD, Russell AJ, Seden PT, Westwood R, Wynne GM. Stemistry: the control of stem cells in situ using chemistry. J Med Chem 2015; 58:2863-94. [PMID: 25590360 DOI: 10.1021/jm500838d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A new paradigm for drug research has emerged, namely the deliberate search for molecules able to selectively affect the proliferation, differentiation, and migration of adult stem cells within the tissues in which they exist. Recently, there has been significant interest in medicinal chemistry toward the discovery and design of low molecular weight molecules that affect stem cells and thus have novel therapeutic activity. We believe that a successful agent from such a discover program would have profound effects on the treatment of many long-term degenerative disorders. Among these conditions are examples such as cardiovascular decay, neurological disorders including Alzheimer's disease, and macular degeneration, all of which have significant unmet medical needs. This perspective will review evidence from the literature that indicates that discovery of such agents is achievable and represents a worthwhile pursuit for the skills of the medicinal chemist.
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Affiliation(s)
- Stephen G Davies
- †Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, U.K
| | - Peter D Kennewell
- †Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, U.K
| | - Angela J Russell
- †Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, U.K.,‡Department of Pharmacology, University of Oxford, Mansfield Road, Oxford, OX1 3QT, U.K
| | - Peter T Seden
- †Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, U.K
| | - Robert Westwood
- †Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, U.K
| | - Graham M Wynne
- †Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, U.K
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26
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Pérez-Caaveiro C, Pérez Sestelo J, Martínez MM, Sarandeses LA. Triorganoindium Reagents in Selective Palladium-Catalyzed Cross-Coupling with Iodoimidazoles: Synthesis of Neurodazine. J Org Chem 2014; 79:9586-93. [DOI: 10.1021/jo501664p] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Cristina Pérez-Caaveiro
- Departamento de Química
Fundamental and Centro de Investigaciones Científicas Avanzadas
(CICA), Universidade da Coruña, E-15071 A Coruña, Spain
| | - José Pérez Sestelo
- Departamento de Química
Fundamental and Centro de Investigaciones Científicas Avanzadas
(CICA), Universidade da Coruña, E-15071 A Coruña, Spain
| | - M. Montserrat Martínez
- Departamento de Química
Fundamental and Centro de Investigaciones Científicas Avanzadas
(CICA), Universidade da Coruña, E-15071 A Coruña, Spain
| | - Luis A. Sarandeses
- Departamento de Química
Fundamental and Centro de Investigaciones Científicas Avanzadas
(CICA), Universidade da Coruña, E-15071 A Coruña, Spain
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27
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Kim GH, Halder D, Park J, Namkung W, Shin I. Imidazole-Based Small Molecules that Promote Neurogenesis in Pluripotent Cells. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201404871] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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28
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Kim GH, Halder D, Park J, Namkung W, Shin I. Imidazole-Based Small Molecules that Promote Neurogenesis in Pluripotent Cells. Angew Chem Int Ed Engl 2014; 53:9271-4. [DOI: 10.1002/anie.201404871] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Indexed: 11/06/2022]
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29
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Tian X, Baek KH, Shin I. Dual-targeting delivery system for selective cancer cell death and imaging. Chem Sci 2013. [DOI: 10.1039/c2sc21777e] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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30
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Ko SK, Shin I. Cardiosulfa induces heart deformation in zebrafish through the AhR-mediated, CYP1A-independent pathway. Chembiochem 2012; 13:1483-9. [PMID: 22692990 DOI: 10.1002/cbic.201200177] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Indexed: 11/07/2022]
Abstract
Heart development is a complicated and elaborate biological process. To study this and similar complicated process and diseases, the discovery and use of small molecules for probing biological events is invaluable. As part of such an investigation, we have identified cardiosulfa, a small molecule that induces severely impaired heart morphology and function in zebrafish. The results of the present study show that cardiosulfa-promoted heart deformation is protected by negative regulators of the aryl hydrocarbon receptor (AhR) signaling pathway, such as the AhR antagonist CH-223191 and an AhR2-morpholino antisense oligonucleotide, zfahr2-MO. However, the toxic effect of cardiosulfa is not alleviated by zfcyp1a-MO, a morpholino antisense oligo for cytochrome P450 1A (CYP1A), which is the most well-characterized gene of the AhR pathway. Similar results were obtained for the known AhR agonist PCB126. These observations suggest that cardiosulfa causes heart deformation in zebrafish through the AhR-mediated, CYP1A-independent pathway. Our results indicate that cardiosulfa has potential as a novel type of a biological probe to investigate the AhR pathway.
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Affiliation(s)
- Sung-Kyun Ko
- Center for Biofunctional Molecules, Department of Chemistry, Yonsei University, 120-749 Seoul, Korea
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31
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Baek KH, Park J, Shin I. Autophagy-regulating small molecules and their therapeutic applications. Chem Soc Rev 2012; 41:3245-63. [PMID: 22293658 DOI: 10.1039/c2cs15328a] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Autophagy or self-eating is a complicated cellular process that is involved in protein and organelle digestion occurring via a lysosome-dependent pathway. This process is of great importance in maintaining normal cellular homeostasis. However, disruption of autophagy is closely associated with various human diseases such as cancer, neurodegenerative disorders, heart disease and pathogen infection. Therefore, small molecules that modulate autophagy can be employed to dissect this complex process and ultimately could have high potential for the treatment of a variety of diseases. This critical review discusses general aspects of autophagy, autophagy-associated diseases and autophagy regulators for biological research and therapeutic applications (207 references).
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Affiliation(s)
- Kyung-Hwa Baek
- Center for Biofunctional Molecules, Department of Chemistry, Yonsei University, Seoul 120-749, Korea
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32
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Cho HJ, Gee HY, Baek KH, Ko SK, Park JM, Lee H, Kim ND, Lee MG, Shin I. A small molecule that binds to an ATPase domain of Hsc70 promotes membrane trafficking of mutant cystic fibrosis transmembrane conductance regulator. J Am Chem Soc 2011; 133:20267-76. [PMID: 22074182 DOI: 10.1021/ja206762p] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Cystic fibrosis transmembrane conductance regulator (CFTR) is a cell-surface anion channel that permeates chloride and bicarbonate ions. The most frequent mutation of CFTR that causes cystic fibrosis is the deletion of phenylalanine at position 508 (ΔF508), which leads to defects in protein folding and cellular trafficking to the plasma membrane. The lack of the cell-surface CFTR results in a reduction in the lifespan due to chronic lung infection with progressive deterioration of lung function. Hsc70 plays a crucial role in degradation of mutant CFTR by the ubiquitin-proteasome system. To date, various Hsc70 inhibitors and transcription regulators have been tested to determine whether they correct the defective activity of mutant CFTR. However, they exhibited limited or questionable effects on restoring the chloride channel activity in cystic fibrosis cells. Herein, we show that a small molecule apoptozole (Az) has high cellular potency to promote membrane trafficking of mutant CFTR and its chloride channel activity in cystic fibrosis cells. Results from affinity chromatography and ATPase activity assay indicate that Az inhibits the ATPase activity of Hsc70 by binding to its ATPase domain. In addition, a ligand-directed protein labeling and molecular modeling studies also suggest the binding of Az to an ATPase domain, in particular, an ATP-binding pocket. It is proposed that Az suppresses ubiquitination of ΔF508-CFTR maybe by blocking interaction of the mutant with Hsc70 and CHIP, and, as a consequence, it enhances membrane trafficking of the mutant.
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Affiliation(s)
- Hyungseoph J Cho
- Center for Biofunctional Molecules, Department of Chemistry, Yonsei University, Seoul 120-749, Korea
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33
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Schnürch M, Waldner B, Hilber K, Mihovilovic MD. Synthesis of 5-arylated N-arylthiazole-2-amines as potential skeletal muscle cell differentiation promoters. Bioorg Med Chem Lett 2011; 21:2149-54. [DOI: 10.1016/j.bmcl.2011.01.123] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2010] [Revised: 01/24/2011] [Accepted: 01/27/2011] [Indexed: 12/22/2022]
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Park S, Pai J, Han EH, Jun CH, Shin I. One-step, aid-mediated method for modification of glass surfaces with N-hydroxysuccinimide esters and its application to the construction of microarrays for studies of biomolecular interactions. Bioconjug Chem 2010; 21:1246-53. [PMID: 20568727 DOI: 10.1021/bc100042j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Microarray technologies have received considerable attention owing to the fact that they serve as powerful tools for the high-throughput analysis of biomolecular interactions and the identification of bioactive substances that bind to biomolecules. Most of the current methods used to construct microarrays rely on the immobilization of substances on properly derivatized surfaces. Among various functional groups used for this purpose, the N-hydroxysuccinimide (NHS) ester group has been largely employed because it can be readily reacted with amine or hydrazide functionalities in substances of interest. However, the NHS ester group is usually introduced onto the surface of a glass slide by employing inconvenient and time-consuming multistep processes. In recent studies, we have developed an efficient, single step method for derivatization of glass surfaces with NHS ester groups that takes advantage of an acid-mediated reaction of NHS ester functionalized dimethallylsilanes with silanols on the glass surface. Conditions for the surface modification procedure that utilize TfOH rather than Sc(OTf)(3) were found to be superior. Protein and RNA-binding experiments show that glass surfaces modified by employing this method are suitable for efficient immobilization of various substances that are appended by amine, hydrazide, and alcohol functionalities. The microarrays, generated in this way, are applicable to procedures for rapid analysis of protein-protein, protein-glycan, protein-small molecule, and peptide-RNA interactions, as well as for profiling enzyme activities. The newly developed acid-mediated, glass surface modification method should be generally applicable to the preparation of various functional group-modified surfaces.
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Affiliation(s)
- Sungjin Park
- Center for Biofunctional Molecules, Department of Chemistry, Yonsei University, Seoul 120-749, Korea
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35
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Orner B. The first Asian Chemical Biology conference meets at Seoul National University. ACS Chem Biol 2010; 5:725-7. [PMID: 20722456 DOI: 10.1021/cb100206k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Brendan Orner
- Nanyang Technological University, Singapore, Singapore.
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36
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Abstract
In the cochlea, spiral ganglion neurons play a critical role in hearing as they form the relay between mechanosensory hair cells in the inner ear and cochlear nuclei in the brainstem. The proneural basic helix-loop-helix transcription factors Neurogenin1 (Neurog1) and NeuroD1 have been shown to be essential for the development of otocyst-derived inner ear sensory neurons. Here, we show neural competence of nonsensory epithelial cells in the cochlea, as ectopic expression of either Neurog1 or NeuroD1 results in the formation of neuronal cells. Since the high-mobility-group type transcription factor Sox2, which is also known to play a role in neurogenesis, is expressed in otocyst-derived neural precursor cells and later in the spiral ganglion neurons along with Neurog1 and NeuroD1, we used both gain- and loss-of-function experiments to examine the role of Sox2 in spiral ganglion neuron formation. We demonstrate that overexpression of Sox2 results in the production of neurons, suggesting that Sox2 is sufficient for the induction of neuronal fate in nonsensory epithelial cells. Furthermore, spiral ganglion neurons are absent in cochleae from Sox2(Lcc/Lcc) mice, indicating that Sox2 is also required for neuronal formation in the cochlea. Our results indicate that Sox2, along with Neurog1 and NeuroD1, are sufficient to induce a neuronal fate in nonsensory regions of the cochlea. Finally, we demonstrate that nonsensory cells within the cochlea retain neural competence through at least the early postnatal period.
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37
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Wei D, Tang M. DFT study on the mechanisms of stereoselective C2-vinylation of 1-substituted imidazoles with 3-phenyl-2-propynenitrile. J Phys Chem A 2010; 113:11035-41. [PMID: 19757851 DOI: 10.1021/jp9047874] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Recently, the first examples of direct vinylation of 1-substituted imidazoles at the 2-position of the imidazole nucleus have been described (J. Org. Chem. 2008, 73, 9155-9157). 1-Substituted imidazoles are C(2)-vinylated with 3-phenyl-2-propynenitrile at room temperature without catalyst and solvent to afford 3-(1-organyl-1H-imidazol-2-yl)-3-phenyl-2-propenenitriles, mainly (ca. 95%) as (Z)-isomers, in 56-88% yield. Nevertheless, the stereoselectivity of vinylation, which has been elusive over the past decades, is still a big problem to explain. In this paper, the reaction mechanisms of stereoselective C(2)-vinylation of 1-methylimidazole with 3-phenyl-2-propynenitrile have been investigated using density functional theory (DFT). The geometries of the reactants, transition states, intermediates, and products were optimized at the B3LYP/6-31G(d,p) level. The calculated results reveal that the reaction contains three processes: formation of zwitterion, proton transfer, and ring rearrangement. Four possible reaction channels are shown, including two (E)-isomer channels and two (Z)-isomer channels. One of the (Z)-isomer channels has the lowest energy barrier among all the four channels, with the highest energy barrier for 83.62 kJ/mol, so it occurs more often than the others at room temperature, which is in good agreement with experiment. Further calculations of solvation effects show that the title reaction can be carried out more smoothly in the gas phase.
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Affiliation(s)
- Donghui Wei
- Department of Chemistry, Center of Computational Chemistry, Zhengzhou University, Zhengzhou, Henan, 450052
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38
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Kim NR, Kang SK, Ahn HH, Kwon SW, Park WS, Kim KS, Kim SS, Jung HJ, Choi SU, Ahn JH, Kim KR. Discovery of a new and efficient small molecule for neuronal differentiation from mesenchymal stem cell. J Med Chem 2010; 52:7931-3. [PMID: 20014867 DOI: 10.1021/jm9015558] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A new synthetic small molecule, compound 1, which induced a neuronal differentiation from mesenchymal stem cells (MSCs) with an excellent efficiency, was identified. Furthermore the differentiated cell by 1 showed the neural electrophysiological and cholinergic neuron properties.
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Affiliation(s)
- Na Ri Kim
- Korea Research Institute of Chemical Technology, Daejeon, 305-600, Korea
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39
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Ko SK, Jin H, Jung DW, Tian X, Shin I. Cardiosulfa, a Small Molecule that Induces Abnormal Heart Development in Zebrafish, and Its Biological Implications. Angew Chem Int Ed Engl 2009; 48:7809-12. [DOI: 10.1002/anie.200902370] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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40
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Ko SK, Jin H, Jung DW, Tian X, Shin I. Cardiosulfa, a Small Molecule that Induces Abnormal Heart Development in Zebrafish, and Its Biological Implications. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200902370] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Cho MH, Lee JH, Ahn HH, Lee JY, Kim ES, Kang YM, Min BH, Kim JH, Lee HB, Kim MS. Induction of neurogenesis in rat bone marrow mesenchymal stem cells using purine structure-based compounds. MOLECULAR BIOSYSTEMS 2009; 5:609-11. [DOI: 10.1039/b905598n] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Williams DR, Ko SK, Park S, Lee MR, Shin I. An apoptosis-inducing small molecule that binds to heat shock protein 70. Angew Chem Int Ed Engl 2008; 47:7466-9. [PMID: 18729127 DOI: 10.1002/anie.200802801] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Dolle RE, Bourdonnec BL, Goodman AJ, Morales GA, Thomas CJ, Zhang W. Comprehensive Survey of Chemical Libraries for Drug Discovery and Chemical Biology: 2007. ACTA ACUST UNITED AC 2008; 10:753-802. [PMID: 18991466 DOI: 10.1021/cc800119z] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Roland E. Dolle
- Adolor Corporation, 700 Pennsylvania Drive, Exton, Pennsylvania 19341, Semafore Pharmaceuticals Inc., 8496 Georgetown Road, Indianapolis, Indiana 46268, NIH Chemical Genomics Center, National Human Genome Research Institute, National Institutes of Health, 9800 Medical Center Drive, Rockville, Maryland 20850, and Department of Chemistry, University of Massachusetts, 100 Morrissey Boulevard, Boston, Massachusetts 02125
| | - Bertrand Le Bourdonnec
- Adolor Corporation, 700 Pennsylvania Drive, Exton, Pennsylvania 19341, Semafore Pharmaceuticals Inc., 8496 Georgetown Road, Indianapolis, Indiana 46268, NIH Chemical Genomics Center, National Human Genome Research Institute, National Institutes of Health, 9800 Medical Center Drive, Rockville, Maryland 20850, and Department of Chemistry, University of Massachusetts, 100 Morrissey Boulevard, Boston, Massachusetts 02125
| | - Allan J. Goodman
- Adolor Corporation, 700 Pennsylvania Drive, Exton, Pennsylvania 19341, Semafore Pharmaceuticals Inc., 8496 Georgetown Road, Indianapolis, Indiana 46268, NIH Chemical Genomics Center, National Human Genome Research Institute, National Institutes of Health, 9800 Medical Center Drive, Rockville, Maryland 20850, and Department of Chemistry, University of Massachusetts, 100 Morrissey Boulevard, Boston, Massachusetts 02125
| | - Guillermo A. Morales
- Adolor Corporation, 700 Pennsylvania Drive, Exton, Pennsylvania 19341, Semafore Pharmaceuticals Inc., 8496 Georgetown Road, Indianapolis, Indiana 46268, NIH Chemical Genomics Center, National Human Genome Research Institute, National Institutes of Health, 9800 Medical Center Drive, Rockville, Maryland 20850, and Department of Chemistry, University of Massachusetts, 100 Morrissey Boulevard, Boston, Massachusetts 02125
| | - Craig J. Thomas
- Adolor Corporation, 700 Pennsylvania Drive, Exton, Pennsylvania 19341, Semafore Pharmaceuticals Inc., 8496 Georgetown Road, Indianapolis, Indiana 46268, NIH Chemical Genomics Center, National Human Genome Research Institute, National Institutes of Health, 9800 Medical Center Drive, Rockville, Maryland 20850, and Department of Chemistry, University of Massachusetts, 100 Morrissey Boulevard, Boston, Massachusetts 02125
| | - Wei Zhang
- Adolor Corporation, 700 Pennsylvania Drive, Exton, Pennsylvania 19341, Semafore Pharmaceuticals Inc., 8496 Georgetown Road, Indianapolis, Indiana 46268, NIH Chemical Genomics Center, National Human Genome Research Institute, National Institutes of Health, 9800 Medical Center Drive, Rockville, Maryland 20850, and Department of Chemistry, University of Massachusetts, 100 Morrissey Boulevard, Boston, Massachusetts 02125
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Williams D, Ko SK, Park S, Lee MR, Shin I. An Apoptosis-Inducing Small Molecule That Binds to Heat Shock Protein 70. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200802801] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Sakurada K, McDonald F, Shimada F. Regenerative Medicine and Stem Cell Based Drug Discovery. Angew Chem Int Ed Engl 2008; 47:5718-38. [DOI: 10.1002/anie.200700724] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Siddle JS, Batsanov AS, Bryce MR. Sequential Metal-CatalyzedN-Heteroarylation and C–C Cross-Coupling Reactions: An Expedient Route to Tris(hetero)aryl Systems. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800018] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Fluorescent high-throughput screening of chemical inducers of neuronal differentiation in skeletal muscle cells. Nat Protoc 2008; 3:835-9. [DOI: 10.1038/nprot.2008.47] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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