Methods and Protocols M ETHODS in M OLECULAR B IOLOGY
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Issn: 2455-7080
ISSN: 2455-7080 Contents lists available at http://www.albertscience.com ASIO Journal of Experimental Pharmacology & Clinical Research (ASIO-JEPCR) Volume 1, Issue 1, 2016, 01-07 AN OVERVIEW OF TUBERCULOSIS MANAGEMENT: MECHANISM AND THERAPEUTIC APPLICATIONS Nidhi Singh Joint Replacement Surgery Research Unit, Fortis Escort Hospital, Jaipur, Rajasthan, India ARTICLE INFO ABSTRACT Tuberculosis infections have exceptional virulence factors compared to other Review Article History pathogens and they infect host cell and persist inside phagosomes. First Received: 29 October, 2015 symptoms of active pulmonary TB can include weight loss, night sweats, fever, Accepted: 05 January, 2016 and loss of appetite etc. The infection can either go into remission or become more serious with onset of chest pain and coughing up bloody sputum. The exact Corresponding Author: symptoms of extra-pulmonary TB vary according to the site of infection in the body. The Mantoux tuberculin skin test, also called as the PPD (purified protein Nidhi Singh derivative) test, is primarily used to identify TB infection. According to their clinical utility the anti-TB drugs can be divided into, two categories; one is first Joint Replacement Surgery line, these drugs have high anti-tubercular efficiency as well as low toxicity; are Research Unit, Fortis Escort used routinely, as for examples- Rifampin (R), Isoniazid (H), Streptomycin (S), Hospital, Jaipur, Rajasthan, India Pyrazinamide (Z), Ethambutol (E) and another is second line, these drugs have either low anti-tubercular efficacy or high toxicity or both; are used in special circumstances only. There are six classes of second-line drugs likes amino Email: [email protected] glycosides, fluoro quinolones, polypeptides, thioamides, cycloserine, p-amino salicylic acid. -
Chloroquine Stimulates Cl Secretion by Ca Activated Cl Channels in Rat
Chloroquine Stimulates Cl2 Secretion by Ca2+ Activated Cl2 Channels in Rat Ileum Ning Yang1., Zhen Lei2., Xiaoyu Li1, Junhan Zhao1, Tianjian Liu1, Nannan Ning1, Ailin Xiao1, Linlin Xu1, Jingxin Li1* 1 Department of Physiology, Shandong University School of Medicine, Jinan, China, 2 Department of Anesthesiology, Qilu Hospital, Shandong University, Jinan, China Abstract Chloroquine (CQ), a bitter tasting drug widely used in treatment of malaria, is associated gastrointestinal side effects including nausea or diarrhea. In the present study, we investigated the effect of CQ on electrolyte transport in rat ileum using the Ussing chamber technique. The results showed that CQ evoked an increase in short circuit current (ISC) in rat ileum at lower concentration (#561024 M ) but induced a decrease at higher concentrations ($1023 M). These responses were not affected by tetrodotoxin (TTX). Other bitter compounds, such as denatoniumbenzoate and quinine, exhibited similar 24 + effects. CQ-evoked increase in ISC was partly reduced by amiloride(10 M), a blocker of epithelial Na channels. Furosemide 24 + + 2 2 (10 M), an inhibitor of Na -K -2Cl co-transporter, also inhibited the increased ISC response to CQ, whereas another Cl channel inhibitor, CFTR(inh)-172(1025M), had no effect. Intriguingly, CQ-evoked increases were almost completely abolished by niflumic acid (1024M), a relatively specific Ca2+-activated Cl2 channel (CaCC) inhibitor. Furthermore, other CaCC inhibitors, such as DIDS and NPPB, also exhibited similar effects. CQ-induced increases in ISC were also abolished by thapsigargin(1026M), a Ca2+ pump inhibitor and in the absence of either Cl2 or Ca2+ from bathing solutions. Further studies demonstrated that T2R and CaCC-TMEM16A were colocalized in small intestinal epithelial cells and the T2R agonist CQ evoked an increase of intracelluar Ca2+ in small intestinal epithelial cells. -
Proteome Cold-Shock Response in the Extremely Acidophilic Archaeon, Cuniculiplasma Divulgatum
microorganisms Article Proteome Cold-Shock Response in the Extremely Acidophilic Archaeon, Cuniculiplasma divulgatum Rafael Bargiela 1 , Karin Lanthaler 1,2, Colin M. Potter 1,2 , Manuel Ferrer 3 , Alexander F. Yakunin 1,2, Bela Paizs 1,2, Peter N. Golyshin 1,2 and Olga V. Golyshina 1,2,* 1 School of Natural Sciences, Bangor University, Deiniol Rd, Bangor LL57 2UW, UK; [email protected] (R.B.); [email protected] (K.L.); [email protected] (C.M.P.); [email protected] (A.F.Y.); [email protected] (B.P.); [email protected] (P.N.G.) 2 Centre for Environmental Biotechnology, Bangor University, Deiniol Rd, Bangor LL57 2UW, UK 3 Systems Biotechnology Group, Department of Applied Biocatalysis, CSIC—Institute of Catalysis, Marie Curie 2, 28049 Madrid, Spain; [email protected] * Correspondence: [email protected]; Tel.: +44-1248-388607; Fax: +44-1248-382569 Received: 27 April 2020; Accepted: 15 May 2020; Published: 19 May 2020 Abstract: The archaeon Cuniculiplasma divulgatum is ubiquitous in acidic environments with low-to-moderate temperatures. However, molecular mechanisms underlying its ability to thrive at lower temperatures remain unexplored. Using mass spectrometry (MS)-based proteomics, we analysed the effect of short-term (3 h) exposure to cold. The C. divulgatum genome encodes 2016 protein-coding genes, from which 819 proteins were identified in the cells grown under optimal conditions. In line with the peptidolytic lifestyle of C. divulgatum, its intracellular proteome revealed the abundance of proteases, ABC transporters and cytochrome C oxidase. From 747 quantifiable polypeptides, the levels of 582 proteins showed no change after the cold shock, whereas 104 proteins were upregulated suggesting that they might be contributing to cold adaptation. -
Ion Channels
UC Davis UC Davis Previously Published Works Title THE CONCISE GUIDE TO PHARMACOLOGY 2019/20: Ion channels. Permalink https://escholarship.org/uc/item/1442g5hg Journal British journal of pharmacology, 176 Suppl 1(S1) ISSN 0007-1188 Authors Alexander, Stephen PH Mathie, Alistair Peters, John A et al. Publication Date 2019-12-01 DOI 10.1111/bph.14749 License https://creativecommons.org/licenses/by/4.0/ 4.0 Peer reviewed eScholarship.org Powered by the California Digital Library University of California S.P.H. Alexander et al. The Concise Guide to PHARMACOLOGY 2019/20: Ion channels. British Journal of Pharmacology (2019) 176, S142–S228 THE CONCISE GUIDE TO PHARMACOLOGY 2019/20: Ion channels Stephen PH Alexander1 , Alistair Mathie2 ,JohnAPeters3 , Emma L Veale2 , Jörg Striessnig4 , Eamonn Kelly5, Jane F Armstrong6 , Elena Faccenda6 ,SimonDHarding6 ,AdamJPawson6 , Joanna L Sharman6 , Christopher Southan6 , Jamie A Davies6 and CGTP Collaborators 1School of Life Sciences, University of Nottingham Medical School, Nottingham, NG7 2UH, UK 2Medway School of Pharmacy, The Universities of Greenwich and Kent at Medway, Anson Building, Central Avenue, Chatham Maritime, Chatham, Kent, ME4 4TB, UK 3Neuroscience Division, Medical Education Institute, Ninewells Hospital and Medical School, University of Dundee, Dundee, DD1 9SY, UK 4Pharmacology and Toxicology, Institute of Pharmacy, University of Innsbruck, A-6020 Innsbruck, Austria 5School of Physiology, Pharmacology and Neuroscience, University of Bristol, Bristol, BS8 1TD, UK 6Centre for Discovery Brain Science, University of Edinburgh, Edinburgh, EH8 9XD, UK Abstract The Concise Guide to PHARMACOLOGY 2019/20 is the fourth in this series of biennial publications. The Concise Guide provides concise overviews of the key properties of nearly 1800 human drug targets with an emphasis on selective pharmacology (where available), plus links to the open access knowledgebase source of drug targets and their ligands (www.guidetopharmacology.org), which provides more detailed views of target and ligand properties. -
VDAC1 Is Essential for Neurite Maintenance and the Inhibition Of
www.nature.com/scientificreports OPEN VDAC1 is essential for neurite maintenance and the inhibition of its oligomerization protects Received: 4 July 2019 Accepted: 4 September 2019 spinal cord from demyelination Published: xx xx xxxx and facilitates locomotor function recovery after spinal cord injury Vera Paschon1, Beatriz Cintra Morena1, Felipe Fernandes Correia1, Giovanna Rossi Beltrame1, Gustavo Bispo dos Santos2, Alexandre Fogaça Cristante2 & Alexandre Hiroaki Kihara 1 During the progression of the neurodegenerative process, mitochondria participates in several intercellular signaling pathways. Voltage-dependent anion-selective channel 1 (VDAC1) is a mitochondrial porin involved in the cellular metabolism and apoptosis intrinsic pathway in many neuropathological processes. In spinal cord injury (SCI), after the primary cell death, a secondary response that comprises the release of pro-infammatory molecules triggers apoptosis, infammation, and demyelination, often leading to the loss of motor functions. Here, we investigated the functional role of VDAC1 in the neurodegeneration triggered by SCI. We frst determined that in vitro targeted ablation of VDAC1 by specifc morpholino antisense nucleotides (MOs) clearly promotes neurite retraction, whereas a pharmacological blocker of VDAC1 oligomerization (4, 4′-diisothiocyanatostilbene-2, 2′-disulfonic acid, DIDS), does not cause this efect. We next determined that, after SCI, VDAC1 undergoes conformational changes, including oligomerization and N-terminal exposition, which are important steps in the triggering of apoptotic signaling. Considering this, we investigated the efects of DIDS in vivo application after SCI. Interestingly, blockade of VDAC1 oligomerization decreases the number of apoptotic cells without interfering in the neuroinfammatory response. DIDS attenuates the massive oligodendrocyte cell death, subserving undisputable motor function recovery. Taken together, our results suggest that the prevention of VDAC1 oligomerization might be benefcial for the clinical treatment of SCI. -
Microbiology)
Goa University P.O. Goa University, Taleigao Plateau, Goa 403 206, India Syllabus for entrance to Ph.D./M.Phil. (Microbiology) MICROBIAL BIOCHEMISTRY 1. Biological Molecules 1.1 Proteins Amino acids: features and properties. Protein: structure, principles of separation and purification, molecular weight determination; sequencing and synthesis. Enzymes: activity, inhibition, mechanism of action; regulatory – allosteric and covalently modulated enzymes and their significance in metabolism. 1.2 Carbohydrates Monosaccharides: types, characteristics and properties. Disaccharides, oligosaccharides, polysaccharides – biological significance. 1.3 Lipids Fatty acids: saturated and unsaturated, structure and properties. Lipids: biological significance; lipid composition of microorganisms. 2. Bioenergetics and Carbohydrate Metabolism 2.1 Bioenergetics Thermodynamics, exergonic and endergonic reactions, redox potential, high energy compounds, ATP structure and significance. 2.2 Oxidative Phosphorylation Redox enzymes, aerobic electron transport and oxidative phosphorylation. 2.3 Carbohydrate metabolism A. Carbohydrates: Central pathways of metabolism – regulatory mechanisms, bioenergetics and significance – EMP, TCA cycle (glucose aerobic and anaerobic metabolism, malate metabolism), Glyoxylate cycle. B. Gluconeogenesis from TCA intermediates / amino acids / acetyl-CoA; biosynthesis of polysaccharides and sugar interconversions. 3. Lipids, Amino Acids, Nucleotides and other Metabolic Paths 3.1 Lipid Metabolism A. Anabolism: Biosynthesis of fatty -
Discovery, Characterization, and Development of Small
DISCOVERY, CHARACTERIZATION, AND DEVELOPMENT OF SMALL MOLECULE INHIBITORS OF GLYCOGEN SYNTHASE Buyun Tang Submitted to the faculty of the University Graduate School in partial fulfillment of the requirements for the degree Doctor of Philosophy in the Department of Biochemistry and Molecular Biology, Indiana University June 2020 Accepted by the Graduate Faculty of Indiana University, in partial fulfillment of the requirements for the degree of Doctor of Philosophy. Doctoral Committee ______________________________________ Thomas D. Hurley, Ph.D., Chair ______________________________________ Peter J. Roach, Ph.D. April 30, 2020 ______________________________________ Millie M. Georgiadis, Ph.D. ______________________________________ Steven M. Johnson, Ph.D. ______________________________________ Jeffrey S. Elmendorf, Ph.D. ii © 2020 Buyun Tang iii Dedication I dedicate this work to my beloved family, my grandparents, my parents, and my brother. iv Acknowledgement First and foremost, I would like to express my deepest gratitude to my thesis advisor, Dr. Thomas D. Hurley. I am grateful to have him as my research mentor over the past four years. He has continuously guided, supported, and inspired me during my study at IUSM. His passion for science and devotion of mentorship offered me the best training experience I could ever receive in graduate school. His easygoing personality reminded me of all the wonderful times inside and outside of the lab. I remember him instructing me handling crystal instrument hand by hand, flying with me to San Diego for a conference, and driving me to a farm restaurant at Illinois. Dr. Hurley is not only an outstanding research mentor, but also a trustful friend. I deeply thank him for all his time, patience, and encouragement along my graduate training. -
Planktonic Euryarchaeota Are a Significant Source of Archaeal Tetraether Lipids in the Ocean
Planktonic Euryarchaeota are a significant source of archaeal tetraether lipids in the ocean Sara A. Lincolna,b,1,2, Brenner Waib,c, John M. Eppleyb,d, Matthew J. Churchb,c, Roger E. Summonsa, and Edward F. DeLongb,c,d,2 aDepartment of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139; bCenter for Microbial Oceanography: Research and Education, University of Hawaii at Manoa, Honolulu, HI 96822; cDepartment of Oceanography, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, Honolulu, HI 96822; and dDepartment of Civil and Environmental Engineering and Division of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 Contributed by Edward F. DeLong, May 23, 2014 (sent for review October 6, 2013) Archaea are ubiquitous in marine plankton, and fossil forms of Thaumarchaeota (1, 2, 12)—have been isolated in pure culture. archaeal tetraether membrane lipids in sedimentary rocks docu- All MG-I strains isolated to date are chemolithoautotrophic, ment their participation in marine biogeochemical cycles for >100 fixing inorganic carbon via energy obtained from the oxidation of million years. Ribosomal RNA surveys have identified four major ammonia to nitrite (13). Recent evidence suggests that MG-I clades of planktonic archaea but, to date, tetraether lipids have also contribute to the flux of potent greenhouse gases nitrous been characterized in only one, the Marine Group I Thaumarch- oxide (14) and methane (15) from the water column to the at- aeota. The membrane lipid composition of the other planktonic mosphere. The membrane lipid assemblage of MG-I includes — — archaeal groups all uncultured Euryarchaeota is currently un- GDGTs with zero through four cyclopentyl moieties and cren- known. -
Life in Extreme Environments
insight review articles Life in extreme environments Lynn J. Rothschild & Rocco L. Mancinelli NASA Ames Research Center, Moffett Field, California 94035-1000, USA (e-mail: [email protected]; [email protected]) Each recent report of liquid water existing elsewhere in the Solar System has reverberated through the international press and excited the imagination of humankind. Why? Because in the past few decades we have come to realize that where there is liquid water on Earth, virtually no matter what the physical conditions, there is life. What we previously thought of as insurmountable physical and chemical barriers to life, we now see as yet another niche harbouring ‘extremophiles’. This realization, coupled with new data on the survival of microbes in the space environment and modelling of the potential for transfer of life between celestial bodies, suggests that life could be more common than previously thought. Here we examine critically what it means to be an extremophile, and the implications of this for evolution, biotechnology and especially the search for life in the Universe. ormal is passé; extreme is chic. While thriving in biological extremes (for example, nutritional Aristotle cautioned “everything in extremes, and extremes of population density, parasites, moderation”, the Romans, known for their prey, and so on). excesses, coined the word ‘extremus’, the ‘Extremophile’ conjures up images of prokaryotes, yet the superlative of exter (‘being on the outside’). taxonomic range spans all three domains. Although all NBy the fifteenth century ‘extreme’ had arrived, via Middle hyperthermophiles are members of the Archaea and French, to English. At the dawning of the twenty-first Bacteria, eukaryotes are common among the psychrophiles, century we know that the Solar System, and even Earth, acidophiles, alkaliphiles, piezophiles, xerophiles and contain environmental extremes unimaginable to the halophiles (which respectively thrive at low temperatures, low ‘ancients’ of the nineteenth century. -
Extremophiles-Basic Concepts
CONTENTS CONTENTS EXTREMOPHILES Extremophiles - Volume 1 No. of Pages: 396 ISBN: 978-1-905839-93-3 (eBook) ISBN: 978-1-84826-993-4 (Print Volume) Extremophiles - Volume 2 No. of Pages: 392 ISBN: 978-1-905839-94-0 (eBook) ISBN: 978-1-84826-994-1 (Print Volume) Extremophiles - Volume 3 No. of Pages: 364 ISBN: 978-1-905839-95-7 (eBook) ISBN: 978-1-84826-995-8 (Print Volume) For more information of e-book and Print Volume(s) order, please click here Or contact : [email protected] ©Encyclopedia of Life Support Systems (EOLSS) EXTREMOPHILES CONTENTS VOLUME I Extremophiles: Basic Concepts 1 Charles Gerday, Laboratory of Biochemistry, University of Liège, Belgium 1. Introduction 2. Effects of Extreme Conditions on Cellular Components 2.1. Membrane Structure 2.2. Nucleic Acids 2.2.1. Introduction 2.2.2. Desoxyribonucleic Acids 2.2.3. Ribonucleic Acids 2.3. Proteins 2.3.1. Introduction 2.3.2. Thermophilic Proteins 2.3.2.1. Enthalpically Driven Stabilization Factors: 2.3.2.2. Entropically Driven Stabilization Factors: 2.3.3. Psychrophilic Proteins 2.3.4. Halophilic Proteins 2.3.5. Piezophilic Proteins 2.3.5.1. Interaction with Other Proteins and Ligands: 2.3.5.2. Substrate Binding and Catalytic Efficiency: 2.3.6. Alkaliphilic Proteins 2.3.7. Acidophilic Proteins 3. Conclusions Extremophiles: Overview of the Biotopes 43 Michael Gross, University of London, London, UK 1. Introduction 2. Extreme Temperatures 2.1. Terrestrial Hot Springs 2.2. Hot Springs on the Ocean Floor and Black Smokers 2.3. Life at Low Temperatures 3. High Pressure 3.1. -
(GSNOR1) Function Leads to an Altered DNA and Histone Methylation Pattern in Arabidopsis Thaliana
TECHNISCHE UNIVERSITÄT MÜNCHEN Wissenschaftszentrum Weihenstephan für Ernährung, Landnutzung und Umwelt (WZW) Lehrstuhl für Biochemische Pflanzenpathologie Loss of S-NITROSOGLUTATHIONE REDUCTASE 1 (GSNOR1) function leads to an altered DNA and histone methylation pattern in Arabidopsis thaliana Eva Rudolf Vollständiger Abdruck der von der Fakultät Wissenschaftszentrum Weihenstephan für Ernährung, Landnutzung und Umwelt der Technischen Universität München zur Erlangung des akademischen Grades eines Doktors der Naturwissenschaften genehmigten Dissertation. Vorsitzender: Prof. Dr. Frank Johannes Prüfer der Dissertation: 1. Prof. Dr. Jörg Durner 2. apl. Prof. Dr. Ramon A. Torres Ruiz Die Dissertation wurde am 30.01.2020 bei der Technischen Universität München eingereicht und durch die Fakultät Wissenschaftszentrum Weihenstephan für Ernährung, Landnutzung und Umwelt am 20.04.2020 angenommen. To my family, Florian and Tobias. Publications and conference contributions related to this thesis: Izabella Kovacs, Alexandra Ageeva, Eva König and Christian Lindermayr, 2016. Chapter Two – S-Nitrosylation of Nuclear Proteins: New Pathways in Regulation of Gene Expression. In Advances in Botanical Research edited by David Wendehenne. Nitric Oxide and Signaling in Plants. Academic Press, 77, 15–39. Eva Rudolf, Markus Wirtz, Ignasi Forné and Christian Lindermayr. S-Nitrosothiols as architect of the methylome in Arabidopsis thaliana. EMBO Conference - Chromatin and Epigenetics 2017, Heidelberg, Germany, Poster. Eva Rudolf, Alexandra Ageeva-Kieferle, Alexander Mengel, Ignasi Forné, Rüdiger Hell, Axel Imhof, Markus Wirtz, Jörg Durner and Christian Lindermayr. Post-translational modification of histones: Nitric oxide modulates chromatin structure. Symposium - From Proteome to Phenotype: role of post- translational modifications 2017, Edinburgh, United Kingdom, Oral presentation. Alexandra Ageeva-Kieferle, Eva Rudolf and Christian Lindermayr, 2019. Redox-Dependent Chromatin Remodeling: A New Function of Nitric Oxide as Architect of Chromatin Structure in Plants. -
Norspermine Substitutes for Thermospermine in the Control of Stem Elongation in Arabidopsis Thaliana
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Elsevier - Publisher Connector FEBS Letters 584 (2010) 3042–3046 journal homepage: www.FEBSLetters.org Norspermine substitutes for thermospermine in the control of stem elongation in Arabidopsis thaliana Jun-Ichi Kakehi a, Yoshitaka Kuwashiro a, Hiroyasu Motose a, Kazuei Igarashi b, Taku Takahashi a,* a Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan b Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan article info abstract Article history: Thermospermine is a structural isomer of spermine and is required for stem elongation in Arabid- Received 26 March 2010 opsis thaliana. We noted the C3C3 arrangement of carbon chains in thermospermine (C3C3C4), Revised 16 May 2010 which is not present in spermine (C3C4C3), and examined if it is functionally replaced with norsper- Accepted 17 May 2010 mine (C3C3C3) or not. Exogenous application of norspermine to acl5, a mutant defective in the syn- Available online 24 May 2010 thesis of thermospermine, partially suppressed its dwarf phenotype, and down-regulated the level Edited by Ulf-Ingo Flügge of the acl5 transcript which is much higher than that of the ACL5 transcript in the wild type. Further- more, in the Zinnia culture, differentiation of mesophyll cells into tracheary elements was blocked by thermospermine and norspermine but not by spermine. Our results indicate that norspermine Keywords: Arabidopsis can functionally substitute for thermospermine. Thermospermine Ó 2010 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved. Norspermine Polyamine Stem elongation Xylem 1.