Plant Cell Electroporation And Electrofusion Protocols

Gene transfer is an essential technology for improving our under standing of gene structure and function. Although there are many meth ods by which DNA may be introduced into cells—including heat and chemical treatments, and microinjection—electroporation has been found to be the most versatile gene transfer technique. Electroporation is effective with a wide variety of cell types, including those that are difficult to transform by other means. For many cell types, electroporation is either the most efficient or the only means known to effect gene transfer. The early and broad success of electric field-medi ated DNA transfer soon prompted researchers to investigate electroporation for transferring other types of molecules into cells, in cluding RNA, enzymes, antibodies, and analytic dyes. The first section of Plant Cell Electroporation and Electrofusion Protocols includes two chapters that serve as a guide to theoretical and practical aspects of electroporation, and will be of particular interest to those developing protocols for as yet untested species or cell types, and a third chapter that describes commercially available electroporation instruments. The remaining chapters describe well-tested protocols for DNA electrotransfection, electroporation of other biomolecules, or cell electrofusion. These chapters also include brief discussions of alterna tives to electric field-based methods, citing the advantages and limita tions of the various methods for achieving specific goals.

Electroporation is an efficient method to introduce macromolecules such as DNA into a wide variety of cells. Electrofusion results in the fusion of cells and can be used to produce genetic hybrids or hybridoma cells. Guide to Electroporation and Electrofusion is designed to serve the needs of students, experienced researchers, and newcomers to the field. It is a comprehensive manual that presents, in one source, up-to-date, easy-to-follow protocols necessary for efficient electroporation and electrofusion of bacteria, yeast, and plant and animal cells, as well as background information to help users optimize their results through comprehension of the principles behind these techniques. Key Features * Covers fundamentals of electroporation and electrofusion in detail * Molecular events * Mechanisms * Kinetics * Gives extensive practical information * The latest applications * Controlling parameters to maximize efficiency * Available instrumentation * Presents applications of electroporation and electrofusion in current research situations * State-of-the-art modifications to electrical pulses and generators * Application of electroporation and electrofusion to unique, alternative cell and tissue types * Gives straightforward, detailed, easy-to-follow protocols for * Formation of human hybridomas * Introduction of genetic material into plant cells and pollen * Transfection of mammalian cells * Transformation of bacteria, plants, and yeast * Production of altered embryos * Optimization of electroporation by using reporter genes * Comprehensive and up-to-date * Convenient bench-top format * Approximately 125 illustrations complement the text * Complete references with article titles * Written by leading authorities in electroporation and electrofusion

The ability to introduce macromolecules into animal cells, includ ing DNA, RNA, proteins, and other bioactive compounds has facili tated a broad range of biological studies, from biochemistry and biophysics to molecular biology, cell biology, and whole animal stud ies. Gene transfer technology in particular will continue to play an essential role in studies aimed at improving our understanding of the relationships between the gene structure and function, and it has impor tant practical applications in both biotechnology and biomedicine, as evidenced by the current intense interest in gene therapy. Although DNA and other macromolecules may be introduced into cells by a variety of methods, including chemical treatments and microinjection, el- troporation has proven to be simpler to perform, more efficient, and effective with a wider variety of cell types than other techniques. The early and broad success of electric field-mediated DNA transfer soon prompted researchers to investigate electroporation for transferring other types of molecules into cells, including RNA, enzymes, antibodies, and analytic dyes. Animal Cell Electroporation and Electrofusion Protocols begins with three chapters that describe the theoretical and practical aspects of electroporation, including a review of the commercially available instrumentation. These introductory chapters will be of particular inter est to those new to electric field technologies and to those developing protocols for as yet untested species or cell types. Nineteen chapters follow that present well-tested protocols for electroporation of proteins and DNA into insect, fish, and mammalian cells.

Cells can be funny. Try to grow them with a slightly wrong recipe, and they turn over and die. But hit them with an electric field strong enough to knock over a horse, and they do enough things to justify international meetings, to fill a sizable book, and to lead one to speak of an entirely new technology for cell manipulation. The very improbability of these events not only raises questions about why things happen but also leads to a long list of practical systems in which the application of strong electric fields might enable the merger of cell contents or the introduction of alien but vital material. Inevitably, the basic questions and the practical applications will not keep in step. The questions are intrinsically tough. It is hard enough to analyze the action of the relatively weak fields that rotate or align cells, but it is nearly impossible to predict responses to the cell-shredding bursts of electricity that cause them to fuse or to open up to very large molecular assemblies. Even so, theoretical studies and systematic examination of model systems have produced some creditable results, ideas which should ultimately provide hints of what to try next.

Electroporation is one of the most widespread techniques used in modem molecular genetics. It is most commonly used to introduce DNA into cells for investigations of gene structure and function, and in this regard, electroporation is both highly versatile, being effective with nearly all species and cell types, and highly efficient. For many cell types, electroporation is either the most efficient or the only means known to effect gene transfer. However, exposure of cells to brief, hi- intensity electric fields has found broad application in other aspects of biological research, and is now routinely used to introduce other types of biological and analytic molecules into cells, to induce cell-cell fusion, and to transfer DNA directly between different species. The first seven chapters of Electroporation Protocols for Micro organisms describe the underlying theory of electroporation, the com mercially available instrumentation, and a number of specialized electroporation applications, such as cDNA library construction and interspecies DNA electrotransfer. Each of the remaining chapters pre sents a well developed method for electrotransformation of a particular bacterial, fungal, or protist species. These chapters also serve to intro duce those new to the field the important research questions that are currently being addressed with particular organisms, highlighting both the major advantages and limitations of each species as a model organ ism, and explaining the roles that electroporation has played in the development of the molecular genetic systems currently in use.

Electrical Manipulation of Cells provides an authoritative and up-to-date review of the field, covering all the major techniques in a single source. The book features broad coverage that ranges from the mechanisms of action of external electrical fields on biological material to the ways in which electrical stimuli are employed to manipulate cells. Bringing together the work of leading international authorities, the book covers membrane breakdown, gene delivery, electroporation, electrostimulation, cell movement, hybridoma production, plant protoplasts, electrorotation and stimulation, and electromagnetic stimulation. For each topic, the authors discuss the relevance of the approach to the current state of the art of biotechnology. Electrical Manipulation of Cells is an unmatched source of information for anyone involved in the manipulation of cells, particularly biotechnologists, cell biology, microbiologists, biophysicists and plant scientists. For researchers, the book provides technical material that ccan be employed in their own work. Students will gain thorough appreciation of the applications of this important technique.