Molecular Cloning: a Laboratory Manual, 4Th Edition
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Recombinant DNA and Elements Utilizing Recombinant DNA Such As Plasmids and Viral Vectors, and the Application of Recombinant DNA Techniques in Molecular Biology
Fact Sheet Describing Recombinant DNA and Elements Utilizing Recombinant DNA Such as Plasmids and Viral Vectors, and the Application of Recombinant DNA Techniques in Molecular Biology Compiled and/or written by Amy B. Vento and David R. Gillum Office of Environmental Health and Safety University of New Hampshire June 3, 2002 Introduction Recombinant DNA (rDNA) has various definitions, ranging from very simple to strangely complex. The following are three examples of how recombinant DNA is defined: 1. A DNA molecule containing DNA originating from two or more sources. 2. DNA that has been artificially created. It is DNA from two or more sources that is incorporated into a single recombinant molecule. 3. According to the NIH guidelines, recombinant DNA are molecules constructed outside of living cells by joining natural or synthetic DNA segments to DNA molecules that can replicate in a living cell, or molecules that result from their replication. Description of rDNA Recombinant DNA, also known as in vitro recombination, is a technique involved in creating and purifying desired genes. Molecular cloning (i.e. gene cloning) involves creating recombinant DNA and introducing it into a host cell to be replicated. One of the basic strategies of molecular cloning is to move desired genes from a large, complex genome to a small, simple one. The process of in vitro recombination makes it possible to cut different strands of DNA, in vitro (outside the cell), with a restriction enzyme and join the DNA molecules together via complementary base pairing. Techniques Some of the molecular biology techniques utilized during recombinant DNA include: 1. -
Applications of Microfluidic Chips in Optical Manipulation Photoporation
APPLICATIONS OF MICROFLUIDIC CHIPS IN OPTICAL MANIPULATION & PHOTOPORATION Robert Frank Marchington A Thesis Submitted for the Degree of PhD at the University of St. Andrews 2010 Full metadata for this item is available in Research@StAndrews:FullText at: https://research-repository.st-andrews.ac.uk/ Please use this identifier to cite or link to this item: http://hdl.handle.net/10023/1633 This item is protected by original copyright Applications of Microfluidic Chips in Optical Manipulation & Photoporation Robert Frank Marchington A thesis presented for the degree of Doctor of Philosophy Optical Trapping & Microphotonics Groups School of Physics & Astronomy University of St Andrews June 2010 Dedicated to Mum & Mike Joe & Xanthoula Applications of Microfluidic Chips in Optical Manipulation and Photoporation Robert Frank Marchington Submitted for the degree of Doctor of Philosophy June 2010 Abstract Integration and miniaturisation in electronics has undoubtedly revolutionised the modern world. In biotechnology, emerging lab-on-a-chip (LOC) methodologies pro- mise all-integrated laboratory processes, to perform complete biochemical or medical synthesis and analysis encapsulated on small microchips. The integration of electri- cal, optical and physical sensors, and control devices, with fluid handling, is creating a new class of functional chip-based systems. Scaled down onto a chip, reagent and sample consumption is reduced, point-of-care or in-the-field usage is enabled through portability, costs are reduced, automation increases the ease of use, and favourable scaling laws can be exploited, such as improved fluid control. The capacity to mani- pulate single cells on-chip has applications across the life sciences, in biotechnology, pharmacology, medical diagnostics and drug discovery. -
Cloning of Gene Coding Glyceraldehyde-3-Phosphate Dehydrogenase Using Puc18 Vector
Available online a t www.pelagiaresearchlibrary.com Pelagia Research Library European Journal of Experimental Biology, 2015, 5(3):52-57 ISSN: 2248 –9215 CODEN (USA): EJEBAU Cloning of gene coding glyceraldehyde-3-phosphate dehydrogenase using puc18 vector Manoj Kumar Dooda, Akhilesh Kushwaha *, Aquib Hasan and Manish Kushwaha Institute of Transgene Life Sciences, Lucknow (U.P), India _____________________________________________________________________________________________ ABSTRACT The term recombinant DNA technology, DNA cloning, molecular cloning, or gene cloning all refers to the same process. Gene cloning is a set of experimental methods in molecular biology and useful in many areas of research and for biomedical applications. It is the production of exact copies (clones) of a particular gene or DNA sequence using genetic engineering techniques. cDNA is synthesized by using template RNA isolated from blood sample (human). GAPDH (Glyceraldehyde 3-phosphate dehydrogenase) is one of the most commonly used housekeeping genes used in comparisons of gene expression data. Amplify the gene (GAPDH) using primer forward and reverse with the sequence of 5’-TGATGACATCAAGAAGGTGGTGAA-3’ and 5’-TCCTTGGAGGCCATGTGGGCCAT- 3’.pUC18 high copy cloning vector for replication in E. coli, suitable for “blue-white screening” technique and cleaved with the help of SmaI restriction enzyme. Modern cloning vectors include selectable markers (most frequently antibiotic resistant marker) that allow only cells in which the vector but necessarily the insert has been transfected to grow. Additionally the cloning vectors may contain color selection markers which provide blue/white screening (i.e. alpha complementation) on X- Gal and IPTG containing medium. Keywords: RNA isolation; TRIzol method; Gene cloning; Blue/white screening; Agarose gel electrophoresis. -
The Effect of Increasing Plasmid Size on Transformation Efficiency in Escherichia Coli
Journal of Experimental Microbiology and Immunology (JEMI) Vol. 2:207-223 Copyright April 2002, M&I UBC The Effect of Increasing Plasmid Size on Transformation Efficiency in Escherichia coli VICKY CHAN, LISA F. DREOLINI, KERRY A. FLINTOFF, SONJA J. LLOYD, AND ANDREA A. MATTENLEY Department of Microbiology and Immunology, UBC Based on the observation that the transformation of Escherchia coli was more efficient with pUC19 than with the larger plasmid pBR322, we hypothesized that transformation frequency is somehow affected by size. To test this hypothesis, we attempted to insert a 1.7kb lambda NdeI fragment into pUC19 to generate a plasmid (pHEL) of the same size as pBR322. The two plasmids of equal size were then to be used to transform E. coli in order to compare transformation efficiencies. After two rounds of cloning, we were unable to generate pHEL. In lieu of using pHEL and pBR322, E. coli were transformed with previously prepared plasmids of varying sizes: pUC8 (2.6 kb), pUC8 0-690 (4.3 kb), and pUC8 0-690::pKT210 (16.1 kb). The results of these transformations indicate that increasing plasmid size correlates with a decrease in transformation efficiency. Transformation is an important technique in molecular cloning for transferring genetic material to bacteria. It can be done by either heat shock or electroporation. The former involves the preparation of competent cells, incubation of the cells with DNA at 0oC and the completion of DNA uptake by heat pulse. Competent cells are capable of taking up DNA. They can be prepared by cold treatment with calcium chloride. -
Molecular Cloning Plasmid-Based Cloning Vectors
Page: 1 Molecular Cloning A glaring problem in most areas of biochemical research is obtaining sufficient amounts of the substance of interest. For example, a 10 L culture of E. coli grown to its maximum titer will only contain about 7 mg of DNA polymerase I, and many other proteins in much lesser amounts. Furthermore, only rarely can as much as half of any protein originally present in an organism be recovered in pure form. Eucaryotic proteins are even more difficult to obtain because tissue samples are usually only available in small quantities. With regards to the amount of DNA present, the 10 L E. coli culture would contain about 0.1mg of any 1000 bp length chromosomal DNA but its purification in the presence of the rest of the chromosomal DNA would be a very difficult task. These difficulties have been greatly reduced through the development of molecular cloning techniques. These methods, which are also referred to as genetic engineering and recombinant DNA technology, deserve much of the credit for the enormous progress in biochemistry and the dramatic rise of the biotechnology industry. The main idea of molecular cloning is to insert a DNA segment of interest into an autonomously replicating DNA molecule, a so-called cloning vector, so that the DNA segment is replicated with the vector. Cloning such a chimeric vector in a suitable host organism such as E. coli or yeast results in the production of large amounts of the inserted DNA segment. If a cloned gene is flanked by the properly positioned control sequences for RNA and protein synthesis, the host may also produce large quantities of the mRNA and protein specified by that gene. -
Molecular Cloning and Characterization of the STE7 and Steli Genes of Saccharomyces Cerevisiae DEBORAH T
MOLECULAR AND CELLULAR BIOLOGY, Aug. 1985, p. 1878-1886 Vol. 5, No. 8 0270-7306/85/081878-09$02.00/0 Copyright © 1985, American Society for Microbiology Molecular Cloning and Characterization of the STE7 and STElI Genes of Saccharomyces cerevisiae DEBORAH T. CHALEFFt* AND KELLY TATCHELL Department ofBiology, University ofPennsylvania, Philadelphia, Pennsylvania 19104 Received 31 December 1984/Accepted 30 April 1985 In the yeast Saccharomyces cerevisiae, haploid cells occur in one of the two cell types, a or a. The alele present at the mating type (MAT) locus plays a prominent role in the control of cell type expression. An important consequence of the elaboration of ceUl type is the ability of cells of one mating type to conjugate with ceUs of the opposite mating type, resulting in yet a third cell type, an a/a diploid. Numerous genes that are involved in the expression of cel type and the conjugation process have been identified by standard genetic techniques. Molecular analysis has shown that expression of several of these genes is subject to control on the transcriptional level by the MAT locus. Two genes, STE7 and STEII, are required for mating in both haploid ceUl types; ste7 and stell mutants are sterile. We report here the molecular cloning of STE7 and STEII genes and show that expression of these genes is not regulated transcriptionally by the MAT locus. We also have genetically mapped the STEII gene to chromosome XII, 40 centimorgans from ura4. Haploid cells of the yeast Saccharomyces cerevisiae exist tation of a gene whose expression is not mating-type depen- as one of the two cell types, a or a. -
Gene Transfer Methods • the Delivery of DNA Into the Host Is Required for Generation of Genetically Modified Organism
Gene Transfer Methods • The delivery of DNA into the host is required for generation of genetically modified organism. • DNA delivery to host is a 3 stage process, DNA sticking to the host cell, internalization and release into the host cell. • As a result, it depends on 2 parameters- • Surface chemistry of host cell-Host cell surface charges either will attract or repel DNA as a result of opposite or similar charges. Presence of cell wall (in the case of bacteria, fungus and plant) causes additional physical barrier to the uptake and entry of DNA. • Charges on DNA-Negative charge on DNA modulates interaction with the host cell especially cell surface. DNA transfer by natural methods 1. Conjugation 2. Bacterial transformation 3. Retroviral transduction 4. Agrobacterium mediated transfer Conjugation • Requires the presence of a special plasmid called the F plasmid. • Bacteria that have a F plasmid are referred to as as F+ or male. Those that do not have an F plasmid are F- or female. • The F plasmid consists of 25 genes that mostly code for production of sex pilli. • A conjugation event occurs when the male cell extends its sex pilli and one attaches to the female. • This attached pilus is a temporary cytoplasmic bridge through which a replicating F plasmid is transferred from the male to the female. • When transfer is complete, the result is two male cells. • When the F+ plasmid is integrated within the bacterial chromosome, the cell is called an Hfr cell (high frequency of recombination cell). TRANSFORMATION • Transformation is the direct uptake of exogenous DNA from its surroundings and taken up through the cell membrane . -
Molecular Cloning and Characterization of Cytoplasmic Polyhedrosis Virus Polyhedrin and a Viable Deletion Mutant Gene
JOURNAL OF VIROLOGY, Jan. 1988, p. 211-217 Vol. 62, No. 1 0022-538X/88/010211-07$02.00/0 Copyright © 1988, American Society for Microbiology Molecular Cloning and Characterization of Cytoplasmic Polyhedrosis Virus Polyhedrin and a Viable Deletion Mutant Gene MAX ARELLA,1 CLAUDE LAVALLEIE,12 SERGE BELLONCIK,l AND YASUHIRO FURUICHI2* Department of Virology, Institut Armand-Frappier, University of Quebec, Montreal, Quebec, Canada,' and Nippon Roche Research Center, Department of Molecular Genetics, Kamakura, Japan2 Received 12 May 1987/Accepted 21 September 1987 The double-stranded RNA genome of Bombyx mori cytoplasmic polyhedrosis virus (CPV) was converted to double-stranded DNA and cloned into plasmid pBR322. The complete nucleotide sequence of cloned genome segment 10, which encodes virus polyhedrin polypeptide, was determined. The CPV polyhedrin gene consists of 942 based pairs and possesses a long open reading frame that codes for a polypeptide of 248 amino acids (molecular weight, 28,500), consistent with an apparent molecular weight of 28,000 previously determined for purffied polyhedrin. No sequence homology was found between CPV polyhedrin and polyhedrins from several nuclear polyhedrosis viruses. In addition to the polyhedrin gene, we completed the sequence analysis of a small deletion mutant gene derived from the polyhedrin gene. This mutant gene consists of two subset domains of the polyhedrin gene, i.e., the 5'-terminal 121 base pairs and the 3'-terminal 200 base pairs. An in vitro transcription demonstrated that the small mutant gene is transcribed by virion-associated RNA polymerases. These data confirm the importance of CPV terminal sequences in virus genome replication. -
Software-Aided Automatic Laser Optoporation and Transfection of Cells
www.nature.com/scientificreports OPEN Software-aided automatic laser optoporation and transfection of cells Received: 19 November 2014 1,2 1,2 1 1,2 Accepted: 05 May 2015 Hans Georg Breunig , Aisada Uchugonova , Ana Batista & Karsten König Published: 08 June 2015 Optoporation, the permeabilization of a cell membrane by laser pulses, has emerged as a powerful non-invasive and highly efficient technique to induce transfection of cells. However, the usual tedious manual targeting of individual cells significantly limits the addressable cell number. To overcome this limitation, we present an experimental setup with custom-made software control, for computer-automated cell optoporation. The software evaluates the image contrast of cell contours, automatically designates cell locations for laser illumination, centres those locations in the laser focus, and executes the illumination. By software-controlled meandering of the sample stage, in principle all cells in a typical cell culture dish can be targeted without further user interaction. The automation allows for a significant increase in the number of treatable cells compared to a manual approach. For a laser illumination duration of 100 ms, 7-8 positions on different cells can be targeted every second inside the area of the microscope field of view. The experimental capabilities of the setup are illustrated in experiments with Chinese hamster ovary cells. Furthermore, the influence of laser power is discussed, with mention on post-treatment cell survival and optoporation-efficiency rates. Introducing foreign (genetic) material into targeted cells has become an indispensable technique in bio- medical research1–3. Particular interesting is the possibility to transfect cells, i.e. -
MOLECULAR CLONING PROCEDURE Psc1o1 PLASMID Eco RI FOREIGN DNA SITE
MOLECULAR CLONING PROCEDURE pSC1O1 PLASMID Eco RI FOREIGN DNA SITE @ 1 ANNEALING REPLICATOR REPLICAT@ LIGASE @ @- COVER LEGEND. bacterial species, Staphylococcus aureus , were also successfully introduced into E. coil, and later (Proc. Nati. Acad. Sci. U. S., 71: 1743-1747, 1974) some genes from the toad Xenopus laevis were MOLECLAAM CIONNG @ _@‘.‘@; inserted into E. coil cells. The developments are recorded by Cohen in his articles on gene man ipu It lation that appeared in the July, 1975, issue of Scientific American and the April 15, 1976, issue of @ @.i' New England Journal of Medicine. Stanley N. Cohen was born in 1935 in New Jersey ((s) and was educated at Rutgers University and the University of Pennsylvania School of Medicine, where he receivedhisM.D. degreein1960.He has been a faculty member of the Department of Medi cine of Stanford University School of Medicine since 1968, rising to full professor in 1975. Herbert W. Boyer was born in 1936 in Pittsburgh, Pennsylvania, and was educated at the University of Pittsburgh, where he received his Ph.D. in bac teriology in 1963. Following a postdoctoral fellow Recombination of DNA was made possible by ship at Yale University, he joined the University of four discoveries during the last decade: breaking California at San Francisco, rising to full professor and joining DNA molecules; gene carriers that can in 1976. replicate themselves and link foreign DNA seg The practical and theoretical implications of re ments;introductionof DNA intoforeigncells;and combinant DNA have made it a topic of national selection of clones of molecular chimeras. -
Molecular Cloning and Functional Analysis of a Novel Cadmium-Responsive Proto-Oncogene
[CANCER RESEARCH 62, 703–707, February 1, 2002] Molecular Cloning and Functional Analysis of a Novel Cadmium-responsive Proto-oncogene Pius Joseph,1 Yi-Xiong Lei, Wen-Zong Whong, and Tong-man Ong Molecular Epidemiology Laboratory, Toxicology and Molecular Biology Branch, National Institute for Occupational Safety and Health, Morgantown, West Virginia 26505 ABSTRACT nication provide for the first time experimental evidence that cell transformation and tumorigenesis caused by exposure to Cd result in The molecular mechanisms potentially responsible for cell transforma- the overexpression of mouse TIF32 (GenBank accession number tion and tumorigenesis induced by cadmium, a human carcinogen, were AF271072).3 Furthermore, we provide experimental evidence to show investigated by differential gene expression analysis of BALB/c-3T3 cells that TIF3 is a novel proto-oncogene whose overexpression is respon- transformed with cadmium chloride (CdCl2). Differential display analysis of gene expression revealed consistent overexpression of mouse translation sible for cell transformation and tumorigenesis induced by Cd. initiation factor 3 (TIF3; GenBank accession number AF271072) in the cells transformed with CdCl2 when compared with nontransformed cells. The predicted protein encoded by TIF3 cDNA exhibited 99% similarity to MATERIALS AND METHODS human eukaryotic initiation factor 3 p36 protein. A Mr 36,000 protein was detected in cells transfected with an expression vector containing TIF3 Cell Culture and Isolation of RNA. Morphological transformation of cDNA. Transfection of NIH3T3 cells with an expression vector containing contact-inhibited BALB/c-3T3 cells with CdCl2 (6–12 M) and development TIF3 cDNA resulted in overexpression of the encoded protein, and this of cell lines from the transformed foci were done previously in our laboratory was associated with cell transformation, as evidenced by the appearance of (5). -
Use of High Voltage Amplifier in Extraporation for Transfection Related Medical Applications
Electrical and Electronics Engineering: An International Journal (ELELIJ) Vol 2, No 2, May 2013 USE OF HIGH VOLTAGE AMPLIFIER IN EXTRAPORATION FOR TRANSFECTION RELATED MEDICAL APPLICATIONS Sweekruti Mishra 1 and Shashank Mundra 2 1,2 VIT University, Vellore, India [email protected] [email protected] ABSTRACT Electroporation, a biophysical effect finds immense significance in the fields of medical applications. Used as a method of transfection, it can be employed to find cure for three dangerous and life threatening medical conditions like cancer, decrease in insulin production and autoimmune diseases.Electrical apparatus used for these treatments are generally based on dc voltage pulses, which due to their inefficiency in producing desired output, have paved ways for electrical apparatus that use AC pulses. Therefore, a high voltage linear amplifier design using vacuum tube valves has been referred to, for the production of the same. Keywords Autoimmune diseases, electroporation, high voltage amplifier, insulin, oncogenes, transfection. 1. INTRODUCTION The process of forcing nucleic acids into cells so as to biologically alter their working is called transfection. This is done by opening transient pores on the cell membrane. Transfection can be carried out by a number of methods like chemical, viral, particle, optical and electroporation. On application of a high magnitude electric field across a biological cell, the permeability of its outer plasma membrane undergoes a significant increase due to molecular rearrangement, leading to pore formation, thus helping in the passage of large molecules across the cell membrane. This process of applying several hundred volts across millimeters of cell distance, so as to introduce foreign bodies into it, is called electroporation or electropermeabilization.