Safe Production of High-Titer Retrovirus
...ed with any MMLV-basedretroviral vector to produce viral supernatants that have titers that areconsistently...ed with any MMLV-based retroviralvector to produce viral supernatants with titers that are consistently greaterthan or equal to10 7 cfu/ml in transient trip...... any MMLV-based retroviral vector to produce viral supernatants in transient triple-transfection experiments. The vectors include a gag-pol-expressing vector that is cotransfected with the retroviral expression vector together with one of a choice of 4 envelope (env)-expressin...Functional Cloning Using ViraPort Retroviral cDNA Expression Libraries
...ntagesover traditional methods. Recent advances in viral packaging systems ensure thatvirtually any cell ty...ods have allowed transient productionof high-titer viral supernatants containing representative mixtures of cDNAswithout the concern of clonal skewing, which...Versatile Reporter Vectors for Monitoring Viral Transduction
...reen fluorescent protein (hrGFP) downstream of the viral promoter were bright green (emission peak:... lines were infected with serially diluted viral supernatant and, after a 2-day expression period, the transduction efficiency was determined...pFB-ERV: Retroviral Delivery of the Ecdysone Receptor Proteins
...ell lines and lymphocytes are besttransduced using viral delivery systems. The most popular and user-friend...nduction ratios are affected by copy number.Hence, viral infection (at an optimal MOI) of the target cell should yield ahigh frequency of clones capable of m...High-Titer Retroviral Vectors for Gene Delivery
... 7 cfu/ml for pFB-Neo. Protein expressionfrom the viral promoter in infected cells was comparable to or hi...MLV vector. The vector pFBhas been deleted for all viral coding sequence and contains no exogenoussequence other than that for the multiple cloning site (MCS...New Reporter Plasmids for Studying Interferon-Stimulated Signal Transduction Pathways
...e also been used as therapeutic agentsagainst many viral diseases, including acquired immune-deficiency syn...terferons synthesized by many cell types following viral infection and havetwo major functions: They inhibit viral replication by activating cellular geneswh...New PCR Primers for Human Diseases
...ays allow shorterdetection times for bacterial and viral pathogens whose detection wouldotherwise require c...ng extremely small amounts of bacterial or viral DNA, it can be used for early detection of disease. Medical researchers can use Stratagenes ...cMaster RTplusPCR System for increased sensitivity and product length in RT-PCR
...nd RT-PCR applications. A recombinant homo-dimeric viral reverse transcriptase together with a unique formulation of the RTplusPCR buffer allows efficient cDNA synthesis over a broad temperature range (37 C60 C) and product size (0.2 kb12.5 kb). The cMaster RTplusPCR enzyme mix uses...Normalizing cDNA libraries using the EppendorfThermomixer
...on of a cell to exogenous influences such as viral infections or medical treatment. To allow unstable mRNA to be examined more thoroughly, it is converted to cDNA. If all isolated mRNAs of a cell are converted to cDNA, the result is referred to as a "cDNA library." The synthesi......as carried out as described below. Briefly, dengue viral RNA was extracted from dengue infected C6/36 cells by using TriReagent (Sigma Bio-sciences). For this experiment, we used a Vietnamese Den-3 isolate (BD98). 5 l of the extracted RNA was mixed with 50 pmol of reverse pr......in particular, nasopharyngeal carcinoma (NPC). The viral oncogene, latent-membrane protein 1 (LMP-1... the LMP-1 gene constitutes only 1% of the viral genome, made the task of amplifying Exon C difficult if not impossible using a conventional ...The QIAGEN Guide to Animal Cell Culture
... cultures can be extended by introduction of viral transforming genes (e.g., the SV40 transforming-antigen genes). The phenotype of these cultures is intermediate between finite cultures and continuous cultures. The cells will proliferate for an extended time, but usually the culture will...BioRobot MDx standardize your automated protocols in clinical laboratories
...-quality nucleic acids Purify genomic and viral nucleic acids - genomic DNA from fresh or frozen whole blood, and viral RNA and DNA from serum and plasma Walkaway automation automated vacuum system eliminates ......or isolation of genomic DNA from blood and viral DNA and RNA from plasma and serum. Reaction setup protocols for some commercially available amplification systems are also supplied with the instrument. Customized protocols for reaction setup can be programmed by our applicat......ms for rapid purification of genomic DNA and viral nucleic acids, and the RNeasy system for RNA preparation from a variety of sources. For more information about QIAprep, QIAamp, DNeasy, PAXgene Blood DNA System, and RNeasy products, contact one of our Technical Service Departments ...... rapid purification of genomic DNA and viral nucleic acids, and the RNeasy system for RNA preparation from a variety of sources. For more information about QIAprep, QIAamp, DNeasy, and RNeasy products, contact one of our Technical Service Departments (see ins......RT is also usually the enzyme of choice with viral RNA due to the presence of carrier RNA in most viral RNA preparations. In comparative experiments, Omniscript RT consistently outperforms oth...C. therm. Polymerase One-Step RT-PCR System
... as few as 100 copies of a template (e.g. viral RNA). Ensures high specificity amplification, because the system will accurately amplify target RNA even in the presence of large amounts of non-specific RNA. Efficiently transcribes GC-rich RNA regions, due to...Titan One Tube RT-PCR System / Kit
...e up to 6 kb PCR products from total RNA, mRNA, or viral RNA. The system may be used for: Amplification of specific RNA targets Cloning of RNA-sequences without constructing a cDNA library Competitive or multiplex PCR. Application profile ...Suggested applications for reverse transcriptases
... for cloning Amplification of viral RNA DDDRT a RACE a PTT a One-Step RT-PCR One-Step RT-PCR with carry-over prevention Expand Re- verse Trans- criptase ...Reverse transcriptases suitable for one-step RT-PCRb
...tion on preparing total RNA, mRNA, and viral RNA, please visit our <a href="http://www.roche-applied-science.com/napure"> Nucleic Acid Isolation and Purification Special Interest Site b One-step RT-PCR offers faste...Reverse transcriptases suitable for two-step RT-PCRd
... total RNA viral RNA specific primer ...tion on preparing total RNA, mRNA, and viral RNA, please visit our <a href="http://www.roche-applied-science.com/napure"> Nuc......using genes Amplification of full-length viral genomes Analyzing deletions Application profile Operating parameters Starting sample: up to 500 ng genomic DNA or 10 ng lambda-DNA pH optimum: 9...Transcriptor Reverse Transcriptase
...duct of choice to transcribe RNA (mRNA, total RNA, viral RNA, and in vitro transcribed RNA) from a variety of sources for the following applications: Synthesis of first-strand cDNA for use in subsequent amplification reactions, using conventional thermal cyclers and real-time PCR instruments (e.g......oduct ofchoice to transcribe RNA (mRNA, total RNA, viral RNA,and in vitro transcribed RNA) from a variety of sources,using conventional thermal cyclers or real-time PCRinstruments (e.g., the LightCycler Instrument) for the followingapplications: Synthesis of first-strand cDNA for use in subse...The New MagNA Pure Compact System
...d forthe fully automated isolation of DNA, RNA, or viral nucleicacids from mammalian blood, serum/plasma, culturecells, and other sample materials in research applications.The technology is based on the proven magneticbeadisolation technique already in use with the MagNAPure LC Instrument. ...siRNA transfection optimization with the Agilent 2100 bioanalyzer
...anbe directly expressed in vivo byuse of plasmids, viral vectors or aPCR cassette. All of these methodsrequire the optimization of thetransfection, for cell viability, siRNAuptake/production and silencingeffectiveness. It is known thatoptimal transfection conditionsstrongly vary between cell lines.However,......m an siRNA expression plasmid or viral vector 5. Expression in cells from a ...reparing adenoviral, retroviral, and other viral vectors for siRNA expression (see <A href="http://www.ambion.com/catal...Delivering siRNA Using Adenoviral Vectors
...me this limitation. In addition, viral vectors permit the delivery of siRNA expressing ...esponse in animal systems, these viral vectors are appropriate only for transient RNA expression but are well suited for ...Increase Protein Activity and Yield
...ultiple proteins in the same reaction. Two viral proteins, protein A and protein B, were synthesized in separate reactions using ActivePro and two other commercial E. coli lysate systems. Figure 1 illustrates the 2-3 fold greater yield of both proteins with ActivePro compa...DNA Removal for Bioprocessing Applications
...rom living cell cultures. The enzymatic removal of viral DNA in cultured cells was measured using real-time RT-PCR, and cell viability was assessed after DNase treatment. In these experiments, HeLa cells were grown to confluence for 72 hours (about 15,000 cells/well in a 96 well ...Maximize Viral RNA Yield from Biological Fluid
... RNA Isolation Kit is optimized for isolating viral RNA from biological fluids and c...ultured cells. These include low viral titers, large volumes, and complex sampleswhich often contain extracellular protei...pSilencer 4.1-CMV: Versatile Vectors for Expression of siRNA, miRNA, and mRNA
... of Ambion's extensive line of plasmid and viral expression systems. For more information or to determine which vector best suits your needs, please visit <A href="http://www.ambion.com/prod/psilencer">www.ambion.com/prod/psilencer . ...MicroRNA Profiling by Array Analysis Reveals Critical BioMarkers
... during development, differentiation, viral infection, or oncogenesis. ...ent, tissue differentiation, and viral regulation. Materials and Methods miRNA Array Analysis Total RNA from tumor...Enhanced siRNA Delivery and Long-term Gene Silencing
...n techniques can be divided into viral and nonviral methods. Both involve ...alized cell lines.) In contrast, viral approaches facilitate effective siRNA delivery into many difficult-to-transfect ce...Getting Started with MicroRNA Research
... cell cycle, and disease (e.g., cancer and viral infections). Figure 1 . m...erentiation, cell death, cancer, and regulation of viral infection, illustrating some of the critical roles that miRNAs p...RNA, DNA, and Protein from a Single Sample
... (e.g., human, plant, yeast, bacterial, or viral samples) Easily scalable depending on starting material and amountof nucleic acid or protein needed Fast, simple complete sample processing in ~1 hour ...... a plasmid 5. Expression from a viral vector 6. Expression from a PCR product All of these methods, except creation of siRNA populations by digestion of long dsRNA, require careful design of the siRNA to maximize ...Robust High Throughput RNA Isolation from Blood Samples
... automation to recover total and viral RNA of high yield, quality, and purity. The ... to directly use whole blood for total and viral RNA isolation decreases cross contamination and saves time and resources. This new kit is de...RNAlater Around the World: The Art of Processing Difficult Samples
...-PCR and antigen-capture ELISA), viral detection was more sensitive in samples preserved with RNA later . To learn more, see J Virol Methods (2004) 118 : 33-7. back to top Ordering Inform...RNA Interference and Gene Silencing: History and Overview
... in both plants and animals and has roles in viral defense and transposon silencing mechanisms....a transgene. It has been proposed that perhaps the viral RdRP is substituting for the Arabidopsis enzyme in these mutants (<A href="#...RNArticles: RNA Amplification Used to Develop a New In Vitro HCMV Assay
... be life threatening. The latent viral replication can be activated in a subset of bone ...le all of the genes expressed in an active viral infection were observed with the fibroblasts during the complete course of viral replication......ther experimental scenarios where purified viral proteins are required. Introducti... Discussion The production of subunit viral vaccines requires the purification of the immunogens of interest from other cellular protein...... cloning and high-level expression of a particular viral protein as DHFR fusion protein in Escheric... used diagnostic tool for the detection of viral infections. Although most of the established test systems still use natural antigen from dif...Real-Time Multiplex PCR from Genomic DNA Using the iCycler iQ Detection System
...ding sensitivity, such as monitoring the number of viral particles present in a patients blood sample, real-time quantitative PCR is the only reasonable approach. In real-time quantitative PCR, a fluorescent reporter molecule is added to the chemical reaction. This reporter may ...Inoculation of Viral RNA and cDNA to Potato and Tobacco Plants Using the Helios Gene Gun
... polyvinylpyrrolidone (PVP) concentration, viral DNA and RNA amounts, and the size and number ...unts . Various ratios of microcarriers and viral cDNA (Table 1) were tested by bombarding A6 leaves. The numbers of infection sites observed ...Total RNA Isolation: 100 l Viral Sample From Cultured-Cell Supernatant Containing Virus
...dd 200 l protein-DNA precipitation solution to the viral cell lysate. 2. Invert capped tube gently 10 times and place tube into an ice bath for 5 min. 3. Centrifuge at 13,00016,000 x g for 3 min. The precipitated proteins and DNA will form a tight pellet. RNA Precipita...... for Conjugation To develop a method for viral conjugation, we began with our whole-virus ELISA protocol, in which the virus is disrupted using SDS. For the first bead conjugation, SRV was disrupted with SDS. We also tried undisrupted whole virus and whole virus disrupted ...Real-Time PCR: General Considerations, Rev A
...s of real-time PCR include measurements of viral load, gene expression studies, clinical diagnostics, and pathogen detection. Although the performance of PCR in more routine molecular biology applications can be relatively straightforward to optimize, several parameters must ...Biolistic Transfection of Organotypic Brain Slices
...jection, electroporation, lipofection, and viral transfectionand for many cell types, gene transfer using these methods has become a routine tool for studying gene regulation and function. However, many other cell types, particulary postmitotic neurons, have not been easily ...... Key words: adenoviral vector • viral transduction • EGFP • IN Cell Analyzer &...gene. Each sensor gene can be rapidly delivered by viral transduction of target cells, resulting in transient gene expression. Signal readouts from the senso...Performance of Ad-A-Gene EGFP-MAPKAP-k2: an adenoviral vector gene delivery system
... Key words: adenoviral vector • viral transduction • EGFP • IN Cell Analyzer &...quo;sensors” into mammalian target cells via viral transduction (1, 2). These sensors comprise a panel of cellular genes, each of which is fused as a c...... Key words: adenoviral vector ● viral transduction ● NTR ● IN Cell Analyzer ...A-Gene adenoviral vector gene delivery system uses viral transduction to rapidly deliver a range of signal pathway ‘sensors’ into a variety of ta......es it necessary to examine variform treatments for viral infections. Herbal medicines are currently being sought after for viral diseases because customary treatments are not proving very effective. We have shown that the aqueous...QIAGEN LongRange PCR and 2Step RT-PCR Kits
... and ready-to-use kit contains an enhanced viral reverse transcriptase, providing highly sensitive synthesis of full-length cDNA (up to 12.5 kb) even from low-abundance targets (Figure 2). The LongRange RT Buffer is specially formulated to provide efficient reverse transcription ......based experiments include long-term knockdown and viral delivery to non-transfectable cell types. We set out to develop strategies for using lentiviral-based shRNA libraries in larger scale silencing projects (see Figure 1 for library vector map). Pilot screens using a tumor suppressor gene fami...High Yield Protein Production from Pichia pastoris Yeast: A Protocol for Benchtop Fermentation
...endotoxin problem associated with bacteria nor the viral contaminationproblem of proteins produced in animal cell culture. Furthermore, P. pastoris can utilizemethanol as a carbon source in the absence of glucose. The P. pastoris expression system usesthe methanol-induced alcohol oxidase (AOX1) promoter, w...The Genesis of Gendicine: The Story Behind the First Gene Therapy
...to-clear liquid. A Gendicine vialcontains 1 x 1012 viral particles in 1 mL ofWFI (water for injection) buff...reatment cycle. A standard dose is 1x1012 viral particles (VP). GENDICINE AVAILABILITY BPI: Are you receiving ...