A microbiological assay for the quantitative determination of glutathione.

abstract：:Loop-mediated isothermal amplification (LAMP), a novel gene amplification method, enables the synthesis of larger amounts of both DNA and a visible byproduct--namely, magnesium pyrophosphate--without thermal cycling. A positive reaction is indicated by the turbidity of the reaction solution or the color change after a...

journal_title：BioTechniques

authors： Goto M,Honda E,Ogura A,Nomoto A,Hanaki K

更新日期：2009-03-01 00:00:00

abstract：:3D printed biomaterials are increasingly used in cell cultures and drug screens. Given the ease of creating artificial tissues, will this technique revolutionize biomedicine and organ implants in the future? ...

journal_title：BioTechniques

authors： Prabhune M

更新日期：2018-03-01 00:00:00

abstract：:An improved Huffman coding method for information storage in DNA is described. The method entails the utilization of modified unambiguous base assignment that enables efficient coding of characters. A plasmid-based library with efficient and reliable information retrieval and assembly with uniquely designed primers is...

journal_title：BioTechniques

authors： Ailenberg M,Rotstein O

更新日期：2009-09-01 00:00:00

abstract：:Quantitative real-time PCR has become a popular method to analyze and quantify changes in the copy number of mitochondrial DNA (mtDNA), and nuclear DNA (nDNA) is often used as an endogenous reference for mtDNA abundance. In our experience, using nDNA as a reference is problematic, due to differences in the extraction ...

journal_title：BioTechniques

authors： Myers MB,Mittelstaedt RA,Heflich RH

更新日期：2009-10-01 00:00:00

abstract：:Perfluorocarbon emulsions were applied to hybridoma cultures grown in tissue culture tubes and column bioreactors. The oxygen transfer enhancement effect of perfluorocarbon emulsions was clearly demonstrated by the higher cell densities obtained in emulsion-supplemented systems. In addition, perfluorocarbon emulsions ...

journal_title：BioTechniques

authors： Ju LK,Armiger WB

更新日期：1992-02-01 00:00:00

abstract：:Normalization is a critical step in the analysis of microarray gene expression data. For dual-labeled array, traditional normalization methods assume that the majority of genes are non-differentially expressed and that the number of overexpressed genes approximately equals the number of under-expressed genes. However,...

journal_title：BioTechniques

authors： Wu Y,Yan L,Liu H,Sun H,Xie H

更新日期：2009-08-01 00:00:00

abstract：:Large genes present particular cloning difficulties, especially when expressed at relatively low levels. We describe a novel method, termed 3' rapid amplification of cDNA ends (RACE) walking, for the rapid determination of unknown 3' flanking sequence of a large cDNA. The technique is a derivative of the anchored PCR ...

journal_title：BioTechniques

authors： Park DJ,Pask AJ,Renfree MB,Graves JA

更新日期：2003-04-01 00:00:00

abstract：:Replication studies on human immunodeficiency virus 1 (HIV-1) rely on a few laboratory strains that are divergent from dominant HIV-1 subtypes in the epidemic. Several phenotypic differences between diverse HIV-1 isolates and subtypes could affect vaccine development and treatment, but this research field lacks robust...

journal_title：BioTechniques

authors： Dudley DM,Gao Y,Nelson KN,Henry KR,Nankya I,Gibson RM,Arts EJ

更新日期：2009-05-01 00:00:00

abstract：:Human telomerase, a ribonucleoprotein enzyme is known to be associated with immortalized cancer cells but is absent in most normal tissues. Thus, telomerase appears to be an attractive new target for anticancer agents and an important diagnostic marker of human cancers. Here, we describe an improved telomerase assay m...

journal_title：BioTechniques

authors： Sun D,Hurley LH,Von Hoff DD

更新日期：1998-12-01 00:00:00

abstract：:DNA-binding proteins can be purified by their affinity for probes with specific sequences that are tethered to magnetic beads. A restriction site at the end of the tether allows release of probe with factor still on it. This probe with bound factor can be bandshifted directly to compare to bandshifts in whole extracts...

journal_title：BioTechniques

authors： Ren L,Chen H,Sternberg EA

更新日期：1994-05-01 00:00:00

abstract：:Inverse PCR has been used for the recovery of genome regions flanking a known sequence, although its application to metagenome walking is limited due to inefficient amplification from low copy number fragments. Here we present an improved inverse PCR scheme that enables walking of rare fragments in environmental metag...

journal_title：BioTechniques

authors： Uchiyama T,Watanabe K

更新日期：2006-08-01 00:00:00

abstract：:We describe here a simple and rapid method for enzymatic DNA amplification using DNA template recovered from membrane filters previously used in hybridization analysis. This is done by first solubilizing membrane pieces carrying DNA of interest in dimethyl sulfoxide, followed by isopropanol precipitation and polymeras...

journal_title：BioTechniques

authors： Chong KY,Chen CM,Choo KB

更新日期：1993-04-01 00:00:00

abstract：:We describe a simple and inexpensive method of performing sequencing reactions for 24 single-strand M13 DNA clones in microtiter plates. To simplify elevated temperature incubations during sequencing reactions, two heating blocks were designed to accommodate microtiter plates and fit within common laboratory heating m...

journal_title：BioTechniques

authors： Koop BF,Wilson RK,Chen C,Halloran N,Sciammis R,Hood L,Lindelien JW

更新日期：1990-07-01 00:00:00

abstract：:The nematode Caenorhabditis elegans is an important model animal for biological research. Currently, transgenic C. elegans strains are mainly generated by injecting DNA encoding a gene of interest, in combination with a reporter gene, into the gonad. With this approach, the interpretation of negative results, such as ...

journal_title：BioTechniques

authors： Li D,Wang M

更新日期：2012-03-01 00:00:00

abstract：:The concentration of proteins in cells is an important parameter that determines how a protein will interact with other proteins or pharmacological agents. Recent developments in Western blotting techniques have now made this a method of choice to measure protein concentration in complex solutions such as total cell e...

journal_title：BioTechniques

authors： Fradelizi J,Friederich E,Beckerle MC,Golsteyn RM

更新日期：1999-03-01 00:00:00

abstract：:We have generated a genomic P1 bacteriophage library using Monterey pine (Pinus radiata) DNA. We first developed a method for isolating from pine tissue the very high molecular weight DNA necessary for the preparation of libraries requiring large inserts. The method involves protoplasting the cells, isolating nuclei a...

journal_title：BioTechniques

authors： Gorman SW,Roberts-Oehlschlager SL,Cullis CA,Teasdale RD

更新日期：1992-05-01 00:00:00

abstract：:Multiplex Manager 1.0 is a user-friendly cross-platform program that designs efficient combinations of existing genetic marker loci into multiplex polymerase chain reactions and optimizes using prior marker information. The program has the flexibility to solve two design problems: combining all markers into the smalle...

journal_title：BioTechniques

authors： Holleley CE,Geerts PG

更新日期：2009-06-01 00:00:00

abstract：:Directed evolution is poised to change small molecule discovery and provide greater access to "drug space." Sarah Webb looks into the evolving drug discovery landscape. ...

journal_title：BioTechniques

authors： Webb S Ph D

更新日期：2017-12-01 00:00:00

abstract：:Genotyping fish larvae is a valuable technique for numerous fields of study. While methods for collecting DNA from early stage larvae have been published, a non-lethal, non-invasive genotyping protocol for hatchlings that is amenable to high-throughput approaches is desirable. Here, we describe a method to individuall...

journal_title：BioTechniques

authors： Espinoza GJ,Poland JM,Bremer JRA

更新日期：2017-10-01 00:00:00

abstract：:We describe a bead-based, multiplexed, oligonucleotide ligation assay (OLA) performed on the Luminex flow cytometer. Differences between this method and those previously reported include the use of far fewer beads and the use of a universal oligonucleotide for signal detection. These innovations serve to significantly...

journal_title：BioTechniques

authors： Bruse S,Moreau M,Azaro M,Zimmerman R,Brzustowicz L

更新日期：2008-11-01 00:00:00

abstract：:The high-order structure of human chromosomes is an important biological question that is still under investigation. Studies have been done on imaging human mitotic chromosomes using mostly 2-D microscopy methods. To image micron-sized human chromosomes in 3-D, we developed a procedure for preparing samples for serial...

journal_title：BioTechniques

authors： Yusuf M,Chen B,Hashimoto T,Estandarte AK,Thompson G,Robinson I

更新日期：2014-12-01 00:00:00

abstract：:The reliability of the PCR technique used to type two human variable number tandem repeats, that is, 3' to apolipoprotein B gene and locus D17S30, was examined using DNA samples of mixed human and microbial origin. Mixtures of human and microbial DNA were amplified, choosing microbes found commonly in the vagina. Tota...

journal_title：BioTechniques

authors： Lienert K,Fowler JC

更新日期：1992-08-01 00:00:00

abstract：:Plasmid DNA can be purified in 20 min using a three-step CsCl gradient in a vertical tube rotor. Ultracentrifugation with discontinuous gradients yields DNA with purity comparable to that obtained with longer isopycnic separations and with columns. ...

journal_title：BioTechniques

authors： Dorin M,Bornecque CA

更新日期：1995-01-01 00:00:00

abstract：:A method for conserving primers and differently labeled fluorogenic hydrolysis (i.e., TaqMan) probes at ambient conditions is presented. Primers and hydrolysis probes with four different fluorophore-quencher combinations (6- FAM-BHQ1, HEX-BHQ1, ROX-BHQ650, and Cy5-BHQ2) were mixed with trehalose and xanthan at final c...

journal_title：BioTechniques

authors： Rombach M,Kosse D,Faltin B,Wadle S,Roth G,Zengerle R,von Stetten F

更新日期：2014-09-01 00:00:00

abstract：:PhDs, postdocs, fellows and newly appointed lecturers all fall into the category of early-career researchers (ECRs). The life of researchers in early stages of their career is far from straightforward. Funding is a huge barrier for many ECRs looking to make the next step in their career, but it's not the only challeng...

journal_title：BioTechniques

authors：

更新日期：2019-01-01 00:00:00

abstract：:Characterization of the thermodynamics of binding interactions is important in improving our understanding of bimolecular recognition and forms an essential part of the rational drug design process. Isothermal titration calorimetry (ITC) is rapidly becoming established as the method of choice for undertaking such stud...

journal_title：BioTechniques

authors： Holdgate GA

更新日期：2001-07-01 00:00:00

abstract：:We describe a rapid and sensitive method for the detection of nucleotide sequence variation that can be used for large-scale screening of population markers. Denaturing gradient gel electrophoresis (DGGE) detects sequence variants of amplified fragments by the differences in their melting behavior. DGGE detects most s...

journal_title：BioTechniques

authors： Miller KM,Ming TJ,Schulze AD,Withler RE

更新日期：1999-11-01 00:00:00

abstract：:Planar lipid bilayers represent a versatile platform for studying the functions of various membrane proteins as well as the development of biosensors. Despite the continuing technological progress in the fabrication of low-noise bilayer setups with mechanically and electrically stable planar bilayers, there is still a...

journal_title：BioTechniques

authors： Novák P,Gaburjáková M,Zahradník I

更新日期：2007-03-01 00:00:00

abstract：:Ribosome profiling is a powerful tool for characterizing in vivo protein translation at the genome scale, with multiple applications ranging from detailed molecular mechanisms to systems-level predictive modeling. Though highly effective, this intricate technique has yet to become widely used in the microbial research...

journal_title：BioTechniques

authors： Latif H,Szubin R,Tan J,Brunk E,Lechner A,Zengler K,Palsson BO

更新日期：2015-06-01 00:00:00

abstract：:Transfection of suspension cells has proven to be very difficult using conventional methods. Here, we present a simple and time-saving new transfection protocol wherein cell culture plates coated with chicken egg white are seeded with suspension cells prior to transfection. Our results demonstrate that coupling egg wh...

journal_title：BioTechniques

authors： Basiouni S,Fuhrmann H,Schumann J

更新日期：2012-08-01 00:00:00