Chemiluminescence and Bioluminescence Past, Present and Future Chemiluminescence and Bioluminescence Past, Present and Future Edited by Aldo Roda Department of Pharmaceutical Sciences, University of Bologna-Alma Mater Studiorum, Bologna, Italy ISBN:978-1-84755-812-1 AcataloguerecordforthisbookisavailablefromtheBritishLibrary rRoyalSocietyofChemistry2011 Allrightsreserved Apartfromfairdealingforthepurposesofresearchfornon-commercialpurposesorfor privatestudy,criticismorreview,aspermittedundertheCopyright,DesignsandPatents Act1988andtheCopyrightandRelatedRightsRegulations2003,thispublicationmaynot bereproduced,storedortransmitted,inanyformorbyanymeans,withouttheprior permissioninwritingofTheRoyalSocietyofChemistryorthecopyrightowner,orinthe caseofreproductioninaccordancewiththetermsoflicencesissuedbytheCopyright LicensingAgencyintheUK,orinaccordancewiththetermsofthelicencesissuedbythe appropriateReproductionRightsOrganizationoutsidetheUK. Enquiriesconcerning reproductionoutsidethetermsstatedhereshouldbesenttoTheRoyalSocietyof Chemistryattheaddressprintedonthispage. TheRSCisnotresponsibleforindividualopinionsexpressedinthiswork. PublishedbyTheRoyalSocietyofChemistry, ThomasGrahamHouse,SciencePark,MiltonRoad, CambridgeCB40WF,UK RegisteredCharityNumber207890 Forfurtherinformationseeourwebsiteatwww.rsc.org Preface The use of chemiluminescence and bioluminescence detection techniques in various fields of analytical and bioanalytical chemistry is continuously expanding thanks to recent achievements that have made available both new chemical or molecular biology tools and advanced instrumentation for light measurement and imaging. The recent 2008 Nobel Prize in Chemistry awarded to Osamu Shimomura, Martin Chalfie and Roger Y. Tsien for the discovery and development of the green fluorescent protein (GFP) testifies to the importance of luminescence in biosciences. The observation of bioluminescence in nature has stimulated, in the last 50 years, basic photophysics and biochemical research aimed at explaining dif- ferentaspectsofthisfascinatingphenomenon,suchasunravellingitsfunctions innature,studyingtheevolutionofbioluminescentspeciesandinvestigatingits biochemicalmechanisms. As aresult, manybioluminescentsystems have been carefullycharacterizedandvariousluciferinsandluciferaseenzymeshavebeen isolated and are nowadays available as analytical tools. Nevertheless, much work needs to be done, since many bioluminescent marine and terrestrial sys- tems are still unknown. Disclosure of the fine mechanism responsible for light emission in biolumi- nescent systems also enabled scientists to design new synthetic chemilumines- cent compounds, exploiting the knowledge of which functional groups are responsibleforlightemissioninnature.Allworkperformedinthe1500–1700s ontheobservationandaccurateclassificationofbioluminescentorganismsand the early attempts to demonstrate the mechanisms of the light emission phe- nomenonpavedthewayforsubsequentachievements,particularlyattheendof the 1800s and during the 1900s. Nowadays, we have extraordinary tools, allowing us to detect a few molecules in a complex sample. In recent years, tremendous progress in the chemiluminescence field has occurred, thanks to the development of new chemical probes, enhancers and advanced instrumentation. Bio- and chemiluminescence have been employed successfully in biospecific assays, exploiting the high detectability of such ChemiluminescenceandBioluminescence:Past,PresentandFuture EditedbyAldoRoda rRoyalSocietyofChemistry2011 PublishedbytheRoyalSocietyofChemistry,www.rsc.org v vi Preface detection systems in combination with high specificity of target recognition offered by antibodies and nucleic acid probes. Furthermore, the intrinsic high sensitivity of bio- and chemiluminescence in small reaction volumes has also allowedthedevelopmentofhigh-throughputscreeningmethods,thusboosting the drug discovery process. The possibility of coupling bio- or chemilumines- cent reactions with other enzyme reactions has led to amplified enzyme-based assayssuitableforautomationandminiaturizationusingimmobilizedenzymes. Finally, the availability of sensitive and compact light detectors has allowed successful implementation of bio- and chemiluminescence detections in por- table analytical devices. Bioluminescent reporter gene technology has propelled revolutionary advances in many fields of basic and applied science, from drug discovery to environmental monitoring. Thanks to its high sensitivity, bioluminescence has been widely used to monitor cellular events and unravel the molecular mechanisms associated with signal transduction and gene expression. More recently, its potential has been also applied to monitor protein–protein inter- actions via resonance energy transfer processes or split-complementation strategies. These findings in signal transduction and protein‘‘chattering’’have beenachievedatthecellularandtissuelevelwithinvitrobioluminescentassays andalsoinwholeorganisms,asinbioluminescenceimaging.Non-invasive‘‘in vivo’’ bioluminescence imaging has emerged as a powerful alternative to other imagingtechniquesandhasbeenappliedforthestudyoftumormetastasisand progression,formonitoringbacterialandviralinfectionsandinstudiesofstem cell homing. In recent years many xenograft and transgenic bioluminescent animals have been created and proposed as preclinical models for drug devel- opment and for pathophysiological studies. Inthisbook,thehistoryandmostrecentadvancesintheapplicationsofbio- and chemiluminescence in analytical chemistry are reported. The first part (Basics of Chemiluminescence and Bioluminescence) reviews the historical developmentofbio-andchemiluminescence,aswellasthefundamentsofsuch phenomena and the most recent advancements in luminescence instrumenta- tion. The second part (Analytical Applications of Chemiluminescence and Bioluminescence) deals with applications of bio- and chemiluminescence in various research fields, such as life sciences, drug discovery, diagnostics, environment, agrofood and forensics. I hope that this book will become a reference text not only for researchers currently employing such detection techniques in their research activity, but also for those approaching bio- and chemiluminescence for the first time. Aldo Roda Bologna, Italy Contents Part 1: Basics of Chemiluminescence and Bioluminescence Chapter 1 A History of Bioluminescence and Chemiluminescence from Ancient Times to the Present 3 Aldo Roda 1.1 Introduction 3 1.2 Ancient Era 4 1.3 Middle Ages to the Sixteenth Century 7 1.4 Seventeenth Century 9 1.5 Eighteenth Century 23 1.6 Nineteenth Century: Modern Science 25 1.7 Twentieth Century: the Brightest Era 27 1.7.1 Bio- and Chemiluminescence in the United States and the Americas 29 1.7.2 Bio- and Chemiluminescence in Europe 38 1.7.3 Bio- and Chemiluminescence in Russia 40 1.7.4 Bio- and Chemiluminescence in Japan 41 1.7.5 Bio- and Chemiluminescence in China 41 1.8 Suggested Further Reading 41 1.9 Conclusions 43 References 43 Chapter 2 The Nature of Chemiluminescent Reactions 51 Gijsbert Zomer 2.1 Introduction 51 2.2 1,2-Dioxetane Chemiexcitation 56 2.2.1 Synthesis of 1,2-Dioxetanes 61 2.3 Peroxyoxalates 63 ChemiluminescenceandBioluminescence:Past,PresentandFuture EditedbyAldoRoda rRoyalSocietyofChemistry2011 PublishedbytheRoyalSocietyofChemistry,www.rsc.org vii viii Contents 2.4 Luminol 69 2.5 Acridinium and Acridine Compounds 73 2.6 Acridan Esters 81 2.7 Concluding Remarks 85 References 85 Chapter 3 Progress and Perspectives on Bioluminescence: from Luminous Organisms to Molecular Mechanisms 91 J. Woodland Hastings 3.1 Introduction 91 3.2 Isolation of Many Different Bioluminescence Systems 92 3.2.1 Insects: Beetles and Diptera 93 3.2.2 Bacterial Luminescence 94 3.2.3 Fungi:SimilarbutnottheSameMechanismas Bacteria 96 3.2.4 Dinoflagellates: Scintillons and Novel Regulation by pH 97 3.2.5 Cypridinids: Luminous Ostracod Crustacea 99 3.2.6 Coelenterates: Aequorin and GFP 100 3.2.7 Pholas 101 3.3 Discussion 102 3.3.1 Milky Seas 102 3.3.2 Beetle Luciferase Structure and Color of Emission 102 3.3.3 Evolutionary Origins and Phylogeny of Luciferases; Lateral Gene Transfer 102 3.3.4 Luciferins: Biosynthesis and Nutritional Transfer 103 3.3.5 Biochemical Basis for Flashing in Luminous Organisms; the Off Rate 103 3.3.6 BasicandAppliedResearch–thePositivesand Negatives 104 3.4 Definitions and Terms 105 3.4.1 Luciferin 105 3.4.2 Photoprotein 106 3.4.3 A More Inclusive Terminology for Luciferin and Luciferase 107 References 107 Chapter 4 Instrumentation for Chemiluminescence and Bioluminescence 113 Fritz Berthold, Manfred Hennecke and Ju¨rgen Wulf 4.1 Introduction 113 4.2 Luminometers 114 Contents ix 4.2.1 Detector 114 4.2.2 Reagent Injectors 118 4.2.3 Transfer Optics 119 4.2.4 Multimode Readers 119 4.2.5 High-throughput Luminometers 119 4.2.6 Tube Luminometers 119 4.2.7 Temperature Control 120 4.2.8 Relative Light Units 120 4.2.9 Sensitivity and Dynamic Range 120 4.2.10 Clinical Applications 121 4.2.11 Practical Hints 121 4.3 Imagers 122 4.3.1 Camera Principles and Types 123 4.3.2 General Camera Aspects 127 4.3.3 Transfer Optics 130 4.3.4 System Sensitivity 130 4.3.5 Sample Illumination 131 4.3.6 Sample Holder 131 4.3.7 Accessories for Dedicated Applications 132 4.3.8 In Vivo Imaging 134 4.3.9 Multimodal Imaging 135 4.3.10 Software 135 4.3.11 Plant Imager 136 References 138 Part 2: Analytical Applications of Chemiluminescence and Bioluminescence Chapter 5 ‘‘Classical’’ Applications of Chemiluminescence and Bioluminescence 143 Massimo Guardigli, Arne Lundin and Aldo Roda 5.1 Introduction 143 5.2 Luminol Chemiluminescence 144 5.2.1 Analytical Applications 144 5.3 Peroxyoxalate Chemiluminescence 148 5.3.1 Analytical Applications 148 5.4 Other CL Systems 149 5.5 Detection of Free Radicals by Chemiluminescence 150 5.5.1 Ultraweak Chemiluminescence 151 5.5.2 Enhanced Chemiluminescence 152 5.5.3 Study of ROS Production 154 5.6 Evaluation of Antioxidant Activity 157 5.6.1 Chemiluminescence Methods 158 5.6.2 Clinical Applications 159 5.6.3 Antioxidant Activity of Foods and Food Derivatives 161 x Contents 5.7 Firefly Luciferase Reaction 162 5.8 Kinetics of Light Emission 164 5.9 DegradationofAdenineNucleotidesinLuminescent Reagents 165 5.10 Reducing Contamination Problems in Assays of ATP 166 5.11 Internal ATP Standard Technique 166 5.12 ATP Biomass Testing 169 5.12.1 ATP per Cell 169 5.12.2 Pretreatment of Samples 169 5.12.3 Extraction of ATP from Cells 170 5.12.4 Assay of ATP in Eukaryotes 172 5.12.5 Assay of ATP in Prokaryotes 173 5.13 Measurement of ATP/ADP/AMP 174 5.13.1 Energy Charge Concept 174 5.13.2 Measuring Energy Charge 175 5.14 Hygiene Control 175 5.15 Enumeration of Bacterial Cells on Filter without Cultivation 176 5.16 Coliform Test 176 5.17 Assays of Enzymes and Metabolites 177 5.17.1 ATP Monitoring Concept 177 5.17.2 Monitoring ATP Forming Enzyme Reactions 178 5.17.3 Monitoring Oxidative Phosphorylation and Photophosphorylation 178 5.17.4 Monitoring ATP Degrading Enzyme Reactions 179 5.18 Reporter Gene Assays 182 5.19 Bacterial Luciferase 182 5.19.1 Enzymatic Assays 182 5.19.2 Cell-based Tests 182 5.20 Conclusions 183 Acknowledgements 183 References 183 Chapter 6 Flow-assisted Analysis 191 Aldo Roda, Mara Mirasoli, Barbara Roda and Pierluigi Reschiglian 6.1 Introduction 191 6.2 Fundamental and Analytical Setup 192 6.2.1 Flow Injection Analysis 192 6.2.2 Sequential Injection Analysis 193 6.2.3 Multisyringe Flow Injection Analysis and Multicommutation in Flow Analysis 194