Abstract:
:A rapid and highly sensitive technique (MAPPing: message amplification phenotyping) has been developed to simultaneously analyze the array of messenger RNAs made by small numbers of cells. The technique incorporates a micro-procedure for isolating RNA, reverse transcription of total cellular RNA to produce cDNA, and enzymatic amplification of cytokine-specific DNA fragments using the polymerase chain reaction. In this study, the technique has been applied to the analysis of cytokines produced by lymphoid cells ranging in number from a single cell to 10(6) cells. The technique should be applicable to virtually any tissue or cell type.
journal_name
Biotechniquesjournal_title
BioTechniquesauthors
Brenner CA,Tam AW,Nelson PA,Engleman EG,Suzuki N,Fry KE,Larrick JWsubject
Has Abstractpub_date
1989-11-01 00:00:00pages
1096-103issue
10eissn
0736-6205issn
1940-9818journal_volume
7pub_type
杂志文章相关文献
BIOTECHNIQUES文献大全abstract::We report here a system for automation of the dideoxynucleotide DNA sequencing method. The system consists of a Beckman Biomek 1000 robotic workstation which has been modified by the addition of a thin heater/cooler block directly on the instrument table. The heater/cooler block, which is regulated by a user-specified...
journal_title:BioTechniques
pub_type: 杂志文章
doi:
更新日期:1988-09-01 00:00:00
abstract::Immunization with naked DNA was used to elicit chicken egg yolk antibodies (IgY). Layer hens were inoculated with plasmid DNA encoding the enhanced green fluorescent protein, the fusion protein of Newcastle disease virus, and VP2 of African horse sickness virus. IgY was extracted from egg yolks by polyethylene glycol ...
journal_title:BioTechniques
pub_type:
doi:10.2144/01313dd05
更新日期:2001-09-01 00:00:00
abstract::We have developed a novel vector pTCS, as a tool for efficient selection of open reading frame (ORF)-containing inserts. In pTCS clones containing an insert with an ORF a downstream marker gene (immE3, conferring resistance to colicin) is activated via translational coupling with the insert, and transformed cells can ...
journal_title:BioTechniques
pub_type: 杂志文章
doi:10.2144/000112629
更新日期:2007-12-01 00:00:00
abstract::Recombinant retroviral vectors usually encode the genes of interest in place of the viral structural genes, which must be provided in trans. These viruses are therefore defective for replication: infected cells cannot produce progeny virus. However, in some cases it may be desirable to generate virus from an infected ...
journal_title:BioTechniques
pub_type: 杂志文章
doi:
更新日期:1994-12-01 00:00:00
abstract::Silencing of mammalian gene expression by RNA interference (RNAi) technology can be achieved using small interfering RNA (siRNA) or short hairpin RNA (shRNA). However, the relative effectiveness of these two approaches is not known. It is also not clear whether gene-specific shRNA transcribed from an RNA polymerase II...
journal_title:BioTechniques
pub_type: 杂志文章
doi:10.2144/04363RR01
更新日期:2004-03-01 00:00:00
abstract::A new method has been developed to purify and detritylate milligram amounts of synthetic oligonucleotides. Dimethoxytrityl oligonucleotides from 15 to 100 nucleotides in length are applied in triethylammonium acetate or concentrated ammonium hydroxide to a disposable chromatographic cartridge, the NENSORB PREP Nucleic...
journal_title:BioTechniques
pub_type: 杂志文章
doi:
更新日期:1990-04-01 00:00:00
abstract::The study of gene regulation in cardiac myocytes requires a reliable in vitro model. However, monolayer cultures used for this purpose are typically not exposed to electrical stimulation, though this has been shown to strongly affect cardiomyocyte gene expression. Based on pacemakers for clinical use, we developed an ...
journal_title:BioTechniques
pub_type: 杂志文章
doi:10.2144/000113308
更新日期:2010-01-01 00:00:00
abstract::Microarray technologies have made possible comprehensive analyses of nucleic acid sequence and expression. However, the technology to obtain efficiently high-quality RNA and DNA suitable for array analysis from purified populations of neoplastic cells from human tissues has not been well addressed. Microdissection can...
journal_title:BioTechniques
pub_type: 杂志文章
doi:10.2144/02324rr06
更新日期:2002-04-01 00:00:00
abstract::The oligonucleotide ligation assay (OLA) was adapted to the genotyping of the N-arylamine-acetyltransferase (NAT2) gene. This assay allows the use of 96-well microplates and robotic workstations for high sample throughput. We found this assay to be accurate, efficient and reliable. Another advantage for epidemiologica...
journal_title:BioTechniques
pub_type: 杂志文章
doi:10.2144/97224st03
更新日期:1997-04-01 00:00:00
abstract::Millions of museum specimens are integral to biodiversity studies; however, DNA degradation may limit the ability to obtain DNA sequences. In this study, a degradation analysis model for Lepidoptera specimens was established. Based on this model, we revealed the characteristics of DNA fragment distribution caused by e...
journal_title:BioTechniques
pub_type: 杂志文章
doi:10.2144/btn-2019-0166
更新日期:2020-03-01 00:00:00
abstract::Electrophoretic mobility shift analysis (EMSA) is a well-characterized and widely used technique for the analysis of proten-DNA interaction and the analysis of transcription factor combinatorics. Currently implemented EMSA generally involves the time-consuming use of radiolabeled DNA and polyacrylamide gel electrophor...
journal_title:BioTechniques
pub_type: 杂志文章
doi:10.2144/03353rr01
更新日期:2003-09-01 00:00:00
abstract::WE present a rapid procedure based on the polymerase chain reaction for generation of double-stranded DNA templates suitable for in vitro transcription by T3 or T7 RNA polymerase. DNA fragments cloned into a phage promoter vector are amplified together with a flanking promoter to provide functional templates. Extensio...
journal_title:BioTechniques
pub_type: 杂志文章
doi:
更新日期:1990-03-01 00:00:00
abstract::This report describes a new method for labeling PCR-generated short length (60-120 bp) double-stranded DNA fragments for use as hybridization probes. The method utilizes gene-specific primers identical to those for PCR generation of non-radioactive DNA fragments. Radioactive probes are synthesized by Taq DNA polymeras...
journal_title:BioTechniques
pub_type: 杂志文章
doi:
更新日期:1992-03-01 00:00:00
abstract::We present a tool for dispensing very low volumes (20 nL or more) of ultra high viscosity (UHV) medical-grade alginate hydrogels. It uses a modified piezo-driven micrometering valve, integrated into a versatile system that allows fast prototyping of encapsulation procedures and scaffold production. Valves show excelle...
journal_title:BioTechniques
pub_type: 杂志文章
doi:10.2144/000113014
更新日期:2009-01-01 00:00:00
abstract::At many research institutions, lab space is more valuable than gold. Developers are taking note by designing smaller instruments with enhanced capabilities. Nathan Blow looks inside today's tiny lab. ...
journal_title:BioTechniques
pub_type: 新闻
doi:10.2144/000114490
更新日期:2017-01-01 00:00:00
abstract::Few studies have focused on the significance of ras protein levels in human malignancy, in part because of the inherent difficulty in quantitation of the ras gene product. We have developed a method for the enzymatic determination of the ras gene product and have used this method for the quantitation of ras gene produ...
journal_title:BioTechniques
pub_type: 杂志文章
doi:
更新日期:1990-08-01 00:00:00
abstract::High stabilities of reporter proteins and their messenger RNAs (mRNAs) interfere with the detection of rapid transient changes in gene expression, such as transcriptional blocks posed by genotoxic DNA lesions. We have modified a green fluorescent protein (GFP) gene within the episomal pMARS vector by addition of a fra...
journal_title:BioTechniques
pub_type: 杂志文章
doi:10.2144/000112479
更新日期:2007-08-01 00:00:00
abstract::Francisella tularensis is one of the most deadly bacterial agents, yet most of the genetic determinants of pathogenesis are still unknown. We have developed an efficient targeted mutagenesis strategy in the model organism F. tularensis subsp. novicida by utilizing universal priming of optimized antibiotic resistance c...
journal_title:BioTechniques
pub_type: 杂志文章
doi:10.2144/000112574
更新日期:2007-10-01 00:00:00
abstract::We describe a method using an inexpensive craft glue to routinely isolate specific areas of tissue as small as 1 mm2 from paraffin sections. The tissue may be digested to release nucleic acid suitable for PCR or reverse transcription PCR. The use of this procedure obviates the requirement for manual microdissection or...
journal_title:BioTechniques
pub_type: 杂志文章
doi:10.2144/96205st04
更新日期:1996-05-01 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
pub_type: 杂志文章
doi:10.2144/000113222
更新日期:2009-10-01 00:00:00
abstract::Here we introduce a modified antibody staining method that uses up to 80% less antibody for flow cytometry. We demonstrate this method for the detection of antigens expressed at high, moderate, or low levels in mouse and rat lymphocytes as well as mouse mammary epithelial cells. We obtained reproducibly accurate resul...
journal_title:BioTechniques
pub_type: 杂志文章
doi:10.2144/0000113854
更新日期:2012-07-01 00:00:00
abstract::Autoantibodies directed against the 68-kDa (U1) ribonucleoprotein antigen are mainly found in sera of patients with mixed connective tissue disease. The corresponding cDNA was fragmented into four regions coding for the major antigenic epitopes A', B', C' and D'. All the epitopes were subcloned and expressed as fusion...
journal_title:BioTechniques
pub_type: 杂志文章
doi:
更新日期:1991-09-01 00:00:00
abstract::The two-hybrid system is a genetic method to identify proteins that interact with a specific target protein, which is expressed in yeast as a hybrid with a DNA-binding domain. Use of this method entails transforming yeast, both with this DNA-binding domain hybrid and with a library of activation domain hybrids, follow...
journal_title:BioTechniques
pub_type:
doi:
更新日期:1993-06-01 00:00:00
abstract::An assay is described in which an oligonucleotide probe is specifically digested by lambda exonuclease only when it is annealed to its complementary sequence. In this assay, a cycling effect occurs whereby a small amount of target sequence acts as a specific co-factor in the enzymatic degradation of a larger number of...
journal_title:BioTechniques
pub_type: 杂志文章
doi:
更新日期:1992-12-01 00:00:00
abstract::The construction and the testing of two lambda phage vectors are described that greatly simplify the tasks of mapping genomic DNA and making replacement-type gene-targeting vectors for mammalian cells from a library of isogenic genomic DNA. The first vector, lambda PS, accommodates up to 20 kb and allows inserts to be...
journal_title:BioTechniques
pub_type: 杂志文章
doi:
更新日期:1994-10-01 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
pub_type: 杂志文章
doi:
更新日期:1992-08-01 00:00:00
abstract::A simple and rapid method for permanently marking autoradiographs is described. This procedure is based on the phosphorescence of light-activated zinc sulfide and the subsequent exposure of x-ray films by this light emission. A lacquer-based carrier allows the zinc sulfide to remain in suspension and permits permanent...
journal_title:BioTechniques
pub_type: 杂志文章
doi:
更新日期:1991-05-01 00:00:00
abstract::Comprehensive analysis of DNA methylation patterns is critical for understanding the molecular basis of many human diseases. While hundreds of PCR-based DNA methylation studies are published every year, the selection and implementation of appropriate methods for these studies can be challenging for molecular genetics ...
journal_title:BioTechniques
pub_type: 杂志文章,评审
doi:10.2144/000114087
更新日期:2013-10-01 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
pub_type: 杂志文章
doi:
更新日期:1992-02-01 00:00:00
abstract::A new procedure is described for the generation of high-titer, helper-free retrovirus vectors employing receptor-mediated, adenovirus-augmented transfection into a standard packaging cell line. Viral titers are increased 30-fold to 100-fold in transiently (> 10(5) infectious units per mL) and stable (> 10(7) infectiou...
journal_title:BioTechniques
pub_type: 杂志文章
doi:
更新日期:1995-03-01 00:00:00