Methods and Tools in Biosciences and Medicine – serie

Prion diseases, also known as Transmissible Spongiform Encephalopathies (TSEs), exist in both humans (Creutzfeldt-Jakob disease (CJD)) and animals (scrapie, bovine spongiform encephalopathy (BSE), chronic wasting disease) and have the unique property of being infectious, sporadic or genetic in origin.Although the precise nature of the infectious agent responsible for TSEs is not definitely identified, it is now clearly demonstrated that a protein named PrP (for Prion Protein) plays a critical role in the transmission and pathogenesis of TSEs.This book provides the general description as well as the details of the techniques currently used for the study of prion diseases. Taking into account the pivotal role played by PrP it is not surprising that many Chapters of this book deal with the purification, the detection and the characterization of the different forms of this protein. In addition, in vitro, cellular and animal models specifically adapted to the study of TSEs, as well as bio-safety procedures are described.Each Chapter is written by scientists involved for many years in their respective domain of prion biology who give the best of their knowledge in this technical document. This volume is a very useful tool for any laboratory which recently decided to contribute to the study of TSEs as well as for teams already engaged in this field for many years but interested in extending their technical capacity toward new methods.Features:Purification of PrPC and the Pathological Isoform of Prion Protein (PrPsc or PrP-res)Animal Models of TSEsCell Culture Models of TSEsPrPsc ImmunohistochemistryWestern Immunoblotting TechniquesAntibody Production and ELISATSE Strain Typing in MiceBiosafety and Decontamination ProceduresCell-free Conversion of Prion ProteinsCytotoxicity of PrP PeptidesCyclic Amplification of Prion Protein MisfoldingOf interest to:Researchers and clinicians in the fields of cell biology, biomedicine, neuroscience/neuropathology, veterinary medicine and biochemistry.

Prion diseases, also known as Transmissible Spongiform Encephalopathies (TSEs), exist in both humans (Creutzfeldt-Jakob disease (CJD) and animals (scrapie, bovine spongiform encephalopathy (BSE), chronic wasting disease) and have the unique property of being infectious, sporadic or genetic in origin.Although the precise nature of the infectious agent responsible for TSEs is not definitely identified, it is now clearly demonstrated that a protein named PrP (for Prion Protein) plays a critical role in the transmission and pathogenesis of TSEs.This book provides the general description as well as the details of the techniques currently used for the study of prion diseases. Taking into account the pivotal role played by PrP it is not surprising that many Chapters of this book deal with the purification, the detection and the characterization of the different forms of this protein. In addition, in vitro, cellular and animal models specifically adapted to the study of TSEs, as well as bio-safety procedures are described.Each Chapter is written by scientists involved for many years in their respective domain of prion biology who give the best of their knowledge in this technical document. This volume is a very useful tool for any laboratory which recently decided to contribute to the study of TSEs as well as for teams already engaged in this field for many years but interested in extending their technical capacity toward new methods.

Extending the range of enzymatic catalysis by using non-aqueous media has now developed into a powerful approach in biochemistry and biotechnology. One peculiar feature which distinguishes it from the conventional enzymology (carried out in aqueous buffers) is that the awareness of different parameters that control and influence the behaviour of enzymes in such environments has emerged rather slowly. Science is about being able to repeat what somebody else has done. Absence of knowledge about such well-defined parameters/fac­ tors has sometimes made some workers rather cautious and diffident about using this approach in their laboratories. But for this, non-aqueous enzymol­ ogy would be more widely practised. It is these thoughts that made me feel that the availability of some well-defined protocols for various applications invol­ ving enzymes in non-aqueous environments would further catalyze the growth of this area. Hence this book, in which each chapter has some protocols in a specific area. The protocols are preceded by brief background material. The early chapters, which are of general importance, concern control of water ac­ tivity and stabilization via immobilization. Some subsequent chapters provide the protocols for transformations involving lipids and carbohydrates, peptide synthesis, and preparation of chiral compounds. The disproportionate focus on lipases is not a coincidence; this class of enzymes has been used more often than others in non-aqueous enzymology.

The technique of needle microinjection has become a prominent experimental approach in biological research. Cellular organelles, DNA and RNA, enzymes, structural proteins, metabolites, ions and antibodies are just some of the molecular and cellular elements that have been transposed from test tubes into living cells by needle injection. This technique is broadly used as a valuable tool for the study of many different cell responses in a variety of systems. This text presents information on the technique of needle microinjection's principles, the required equipment, preparation of receiving cells and injected material and the analysis of the results. It provides detailed protocols for a wide range of important applications and different cellular systems from the fields of cell cycle regulation, signal transduction, study of transcriptional regulations, cytoskeletal functions, secretion and intracellular transport.

Natural toxins form a major component of the molecular tools used increasingly frequently by the ever growing number of laboratories of various kinds. Evidence for this is provided not only by the increasing number of firms including such toxins in their catalogues but also by the large number of demands received by those who discover new toxins. Twenty chapters survey important aspects of toxin origin, their structure and molecular mechanism, and their cellular and pathogenic effects. In addition, the text provides comprehensive and specific methodology for the application of these toxins in the research laboratory. This begins with the description of the method of extraction, biochemical and pharmacological characterization, and assessment of purity, and continues with methods for chemical modification, e.g. labelling, and eventually describes applications in pharmacological studies in vivo and/or in vitro. The length of this book has been kept reasonable by concentrating on animal toxins,...

This manual presents practical approaches to using DNA fingerprinting and genetic profiling to answer a variety of biological and medical questions. It provides detailed methodology for setting up and performing experiments and evaluating results. Extensive troubleshooting tips, helpful hints, and advice for daily practice are also included. This will be a useful guide for scientists and researchers engaged in genetic identification and relationship analyses.

This manual describes the methodology and applications of microinjection, a powerful technique for transposing material into living cells through needle injection. Information is presented on the techniques principles, the required equipment, preparation of receiving cells and injected material, and the analysis of results. Detailed protocols for a wide range of applications in different cellular systems are included. A large part of the book is also dedicated to the Xenopus laevis oocyte system.

It is now something of a truism to say that natural toxins form a major compo­ nent of the molecular tools used increasingly frequently by the ever growing number of laboratories of various kinds. Evidence for this is provided not only by the increasing number of firms including such toxins in their catalogues but also by the large number of demands received by those who discover new tox­ ins. This book is designed to facilitate the work of scientists interested in explor­ ing a new domain of toxicology or in using toxins as tools for research. The length of this book has been kept reasonable by concentrating on animal tox­ ins, most of which are polypeptides. The venom of each animal contains a large number of toxins, which may be similar in terms of their physical and chemical properties and are therefore difficult to purify. However, their pharmacological activities may be very differ­ ent. These toxins are extremely active, and it is therefore necessary to demon­ strate conclusively that the activity observed really does correspond to the newly characterized molecule.

Covering applications in different types of non-aqueous media, this volume covers: protocols for specific applications, peptide synthesis, sugar transformation, and preparation of chiral compounds. The book also includes an extensive troubleshooting guide as well as hints and advice from and for daily practice.

The amount of information that can be obtained by using molecular techniques in evolution, systematics and ecology has increased exponentially over the last ten years. The need for more rapid and efficient methods of data acquisition and analysis is growing accordingly. This manual presents some of the most important techniques for data acquisition developed over the last years. The choice and justification of data analysis techniques is also an important and critical aspect of modern phylogenetic and evolutionary analysis and so a considerable part of this volume addresses this important subject. The book is mainly written for students and researchers from evolutionary biology in search for methods to acquire data, but also from molecular biology who might be looking for information on how data are analyzed in an evolutionary context. To aid the user, information on web-located sites is included wherever possible. Approaches that will push the amount of information which systematics will gather in the

The amount of information that can be obtained by using molecular techniques in evolution, systematics and ecology has increased exponentially over the last ten years. The need for more rapid and efficient methods of data acquisition and analysis is growing accordingly. This manual presents some of the most important techniques for data acquisition developed over the last years. The choice and justification of data analysis techniques is also an important and critical aspect of modern phylogenetic and evolutionary analysis and so a considerable part of this volume addresses this important subject. The book is mainly written for students and researchers from evolutionary biology in search for methods to acquire data, but also from molecular biology who might be looking for information on how data are analyzed in an evolutionary context. To aid the user, information on web-located sites is included wherever possible. Approaches that will push the amount of information which systematics will gather in the

Shape your heart to front the hour, but dream not that the hour will lost. Alfred Tennyson Locksley Hall Sixty YeO!, After Numerous advances in the life sciences have necessitated the need to develop gentle, quick and economical methods for separation of proteins/enzymes. Affmity-based separations, with their high selectivity, have thus come to be used more frequently. In the beginning, we just had atrmity chromatography. Today we have several strategies that employ atrmity interactions for separa- tion and analysis. This book is an attempt to provide a short introduction and illustrative protocols for some important and current affinity-based approaches inthe area ofdownstream processingofenzymes/proteins. Today, people from a variety of disciplines have to purify proteins. It is hoped that this book will provide some quick insight into the various available options and guide even a novice (in the area ofprotein separation) to obtain his/her target protein at the level of purity that he/she desires.

Shape your heart to front the hour, but dream not that the hour will lost. Alfred Tennyson Locksley Hall Sixty YeO!, After Numerous advances in the life sciences have necessitated the need to develop gentle, quick and economical methods for separation of proteins/enzymes. Affmity-based separations, with their high selectivity, have thus come to be used more frequently. In the beginning, we just had atrmity chromatography. Today we have several strategies that employ atrmity interactions for separa- tion and analysis. This book is an attempt to provide a short introduction and illustrative protocols for some important and current affinity-based approaches inthe area ofdownstream processingofenzymes/proteins. Today, people from a variety of disciplines have to purify proteins. It is hoped that this book will provide some quick insight into the various available options and guide even a novice (in the area ofprotein separation) to obtain his/her target protein at the level of purity that he/she desires.

Modern analytical biotechnology is focused on the use of a set of enabling platform technologies that provide contemporary, state-of-the-art tools for genomics, proteomics, metabolomics, drug discovery, screening, and analysis of natural product molecules. Thus, analytical biotechnology covers all areas of bioanalysis from biochips and nano-chemistry to biology and high throughput screening. Moreover, it aims to apply advanced automation and micro fabrica­ tion technology to the development of robotic and fluidic devices as well as integrated systems. This book focuses on enhancement technology development by promoting cross-disciplinary approaches directed toward solving key problems in biology and medicine. The scope thus brings under one umbrella many different techniques in allied areas. The purpose is to support and teach the fundamental principles and practical uses of major instrumental techniques. Major platforms are the use of immobilized molecules in biotechnology and bioanalysis, im­ munological techniques, immunological strip tests, fluorescence detection and confocal techniques, optical and electrochemical biosensors, biochips, micro dotting, novel transducers such as nano clusters, atomic force microscopy based techniques and analysis in complex media such as fermentation broth, plasma and serum. Techniques related to HPLC, capillary electrophoresis, gel electrophoresis, and mass spectrometry have not been included in this book but will be covered by further publications. Fundamentals in analytical biotechnology include basic and practical aspects of characterizing and analyzing DNA, proteins, and small metabolites.

Modern analytical biotechnology is focused on the use of a set of enabling platform technologies that provide contemporary, state-of-the-art tools for genomics, proteomics, metabolomics, drug discovery, screening, and analysis of natural product molecules. Thus, analytical biotechnology covers all areas of bioanalysis from biochips and nano-chemistry to biology and high throughput screening. Moreover, it aims to apply advanced automation and micro fabrica­ tion technology to the development of robotic and fluidic devices as well as integrated systems. This book focuses on enhancement technology development by promoting cross-disciplinary approaches directed toward solving key problems in biology and medicine. The scope thus brings under one umbrella many different techniques in allied areas. The purpose is to support and teach the fundamental principles and practical uses of major instrumental techniques. Major platforms are the use of immobilized molecules in biotechnology and bioanalysis, im­ munological techniques, immunological strip tests, fluorescence detection and confocal techniques, optical and electrochemical biosensors, biochips, micro dotting, novel transducers such as nano clusters, atomic force microscopy based techniques and analysis in complex media such as fermentation broth, plasma and serum. Techniques related to HPLC, capillary electrophoresis, gel electrophoresis, and mass spectrometry have not been included in this book but will be covered by further publications. Fundamentals in analytical biotechnology include basic and practical aspects of characterizing and analyzing DNA, proteins, and small metabolites.

This manual reflects practical approaches to handling bacteria in the labora- tory. It is designed to recall historical methods of bacterial genetics that have had recent developments and to present new techniques that allow full genome analysis. It has been written for microbiologists who need to group their protocols at the state of the art of a new millennium and also for scientists in other fields of life sciences who need to use bacteria for their research. Teachers, graduate students, and postdocs also will benefit from having these protocols to help them understand modern bacterial genetics. I learned so much from these contributions from my colleagues that I have no doubt about the daily usefulness of this book.April 2002 Michel Blot XII Abbreviations Acyl-HSL N-acyl homoserine lactone moi multiplicity of infection Amp or Ap ampicillin N amino C carboxy NMR nuclear magnetic resonance CIO-HSL N-decanoyl-L-homoserine lactone 3-0H-C14:1-HSL N-(3-hydroxy-7 -cis-tetra- C12-HSL N-dodecanoyl-L-homoserine lac- decanoyl)homo-serine lactone tone 3-0H-C4-HSL N-3-hydroxybutanoyl-L- C14-HSL N-tetradecanoyl-L-homoserine homoserine lactone lactone ONPG o-nitrophenyl ~-D-galactopyranoside C4-HSL N-butanoyl-L-homoserine lactone ORF open reading frame C6-HSL N-hexanoyl-L-homoserine lactone OTG I-S-octyl-~-D-thioglucoside C8-HSL N-octanoyl-L-homoserine lactone 3-oxo-CIO-HSL N-3-oxodecanoyl-L-homo- Cam or Cm chloramphenicol serine lactone CBD chitin binding domain 3-oxo-C12-HSL N-3-oxododecanoyl-L- CHEF contour clamped homogenous electric homoserine lactone field 3-oxo-C14-HSL N-3-oxotetradecanoyl-L- CI consistency index homoserine lactone CRIM conditional-replication, integration, 3-oxo-C4-HSL N-3-oxobutanoyl-L-homoser- and modular ine lactone dCTP deoxycytidine triphosphate 3-oxo-C6-HSL N-3 -oxohexanoyl-L-homoser- deg.