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  1. Lentiviral Vector Guide

    Type
    Guide
    ...regulatory genes, accessory genes, and the long-terminal repeats (LTRs) necessary for integration. Not ... a heterologous promoter (often CMV or RSV), eliminating the need for transactivation by Tat. Most third-generation...contain a deletion in the 3’ LTR to make them self-inactivating (SIN). This deletion is transferred to the 5...incompetent by using four plasmids instead of three and eliminates the requirement for Tat. Always includes deletion...deletion in the 3' LTR for self-inactivation LTR Viral Promoter Wildtype Hybrid promoter; 5' LTR is partially...with certain cloning methods (such as a Gateway destination vector), so be sure to confirm your chosen plasmid... When cloning your plasmids, be sure to use recombination-deficient bacteria strains, such as NEB Stable...
  2. Sequencing Primers

    Type
    Guide
    ...TAATACGACTCACTATAGGG T7 promoter Forward T7 Terminal GCTAGTTATTGCTCAGCGG T7 terminator Reverse Other Common Sequencing...' end of Cre recombinase Reverse CYC1 GCGTGAATGTAAGCGTGAC CYC1 transcriptioin termination signal/td> Reverse...TAATACGACTCACTATAGGG T7 promoter Forward T7 Terminal GCTAGTTATTGCTCAGCGG T7 terminator Reverse Tac promoter GAGCGGATAACAATTTCACACAGG...information on molecular biology, plasmids, and recombinant DNA, please consult Addgene's Molecular Biology...BGH-R TAGAAGGCACAGTCGAGG Bovine growth hormone terminator Reverse CMV Forward CGCAAATGGGCGGTAGGCGTG Human...GCAAATGGCATTCTGACATCC For Pichia vectors with AOX1 terminator Reverse 5'AOX1 GACTGGTTCCAATTGACAAGC For Pichia...BGH-R TAGAAGGCACAGTCGAGG Bovine growth hormone terminator Reverse Bglob-intron-F CTGGTCATCATCCTGCCTTT Rabbit...
  3. Antibody Guide

    Type
    Guide
    ...Antibodies produced this way are called recombinant antibodies. Recombinant antibodies are created by cloning... time and labor intensive. Recombinant expression validation A recombinant expression strategy is used...cultured immune cells, or through the use of recombinant plasmids. Animals - Antibodies produced in animals... of a single antibody with little variation. Recombinant plasmids - Antibodies can be produced from plasmids... and can either be used while suspended in the original media or isolated and placed in a buffer. Antibody... binding site. This process, known as V(D)J recombination, allows for a wide variety of antibodies to ...abundant isotype in blood, also found in tissues; predominant isotype in secondary immune response Monomer ...
  4. Optogenetics Guide

    Type
    Guide
    ...delay the closing of the channel 470(activ.), 590(inact.) ReaChR Red-activatable variant of CrChR2 590 Channelrhodopsins...chloride pump from Haloarcula (Halobacterium) salinarum (strain Shark), used to silence neuronal activity...short or long periods of neuronal activation/inactivation periods. These can range from msec with hChR2...expression of the opsin and the area that is being illuminated. There are several different ways to control ...especially powerful when combined with site specific recombinase technology like Cre-lox, which allows you to ...one half of a given protein, such as the Cre recombinase, is fused to Cry2 and the other half to CIB1,...K + (Kv) channels fused to LOV2 photoswitch. Illumination causes the photoswitch to unfold, lowering the...
  5. Gamma-Retroviral Vector Guide

    Type
    Guide
    ...strand of RNA contains packaging genes and the long-terminal repeats (LTRs) necessary for integration. Wildtype...with certain cloning methods (such as a Gateway destination vector), so be sure to confirm your chosen plasmid... When cloning your plasmids, be sure to use recombination-deficient bacteria strains, such as NEB Stable... strains reduce the frequency of homologous recombination of unstable regions, like the LTRs found in ...engineered to stably express gag-pol and/or env , eliminating the need to deliver these genes on separate plasmids...envelope and packaging plasmids. Unless multiple recombination events occur between the packaging, envelope...that have been deposited with Addgene are self-inactivating (SIN). These plasmids have a deletion in the...
  6. Protocol - pLKO.1 – TRC Cloning Vector

    Type
    Protocol
    ...in mammalian cells. sin 3’LTR 3’ Self-inactivating long terminal repeat. f1 ori f1 bacterial origin of... Map of pLKO.1 containing an shRNA insert. The original pLKO.1-TRC cloning vector has a 1.9kb stuffer ...the transduced cells. hPGK Human phosphoglycerate kinase promoter drives expression of puromycin. Puro R...bacterial origin of replication. 5’LTR 5’ long terminal repeat. RRE Rev response element. A.3 Related ...repeats, especially repeated Ts because polyT is a termination signal for RNA polymerase III. Note that these...and ligated into the pLKO.1 vector, producing a final plasmid that expresses the shRNA of interest. C.1...buffer 1 1 μL AgeI add ddH 2 O to bring to 50 μL final volume Incubate at 37°C for 2 hours. Purify with...
  7. AAV Purification by Iodixanol Gradient Ultracentrifugation

    Type
    Protocol
    ...protocol is composed of steps that separate out contaminants from an impure AAV preparation. The 15% iodixanol...macromolecules. The 40% and 25% steps are used to remove contaminants with lower densities, including empty capsids...mg of MgCl 2 and 14.91 mg of KCl in 1× PBS in a final volume of 100 mL. Sterilize by passing through a... of MgCl 2 , and 14.91 mg of KCl in 1× PBS in a final volume of 100 mL. Sterilize by passing through a....5 mL to 1 mL fractions per tube. Avoid the proteinaceous material near the 40–25% interface. Pro-Tip ...per tube, taking care to avoid collecting the proteinaceous material at the 40–25% interface. Repeat for.... Image adapted from Zolotukhin, S., et al. "Recombinant adeno-associated virus purification using novel...
  8. Lentivirus ddPCR Titration

    Type
    Protocol
    ...mL pipette 5–10 times. The final volume in the well is 1.5 mL, and the final Polybrene concentration is...high glucose, pyruvate, Corning, 10-013-CV Heat-inactivated FBS L-alanyl-L-glutamine (or alternative stable...500 mL DMEM, high glucose, pyruvate 55 mL heat inactivated premium grade, fetal bovine serum 5 mL glutaGRO...new aspirating pipette for each well as to not contaminate cell conditions with others. Gently add 1.5 mL...master mix for 9 samples. Component Volume 9X Volume Final Concentrations 2X ddPCR Supermix for Probes, no ...from the appropriate dilutions to calculate the final infectious titer. Tips and Troubleshooting We recommend...freezer blocks during use. To reduce the risk of contaminating reagents we recommend making small aliquots ...
  9. Promoters

    Type
    Guide
    ...transcription factors bind. Distal Promoter The final portion of the promoter region is called the distal...Constitutive Mammalian Promoter from phospholycerate kinase gene U6 Constitutive Mammalian U6 nuclear promoter...Plasmids 101: Repressible Promoters Plasmids 101: Terminators and PolyA signals More Plasmids 101 topics Content...
  10. Antibody Validation Using the Indirect ELISA Method

    Type
    Protocol
    ...When to Use Them Immunocytochemistry Protocol Recombinant Antibody Purification Protocol Antibody Guide... software Reagents Purified antigen Purified recombinant antibody Isotype control antibody HRP-conjugated...10 twice for a total of three washes. After the final wash, aspirate the wash buffer from the wells. Prepare...20 twice for a total of three washes. After the final wash, aspirate the wash buffer from the wells. Prepare...32 twice for a total of three washes. After the final wash, aspirate the wash buffer from the wells. Dilute...42 twice for a total of three washes. After the final wash, aspirate the wash buffer from the wells. Immediately...to factor in that dilution when calculating the original sample concentration!). Sample Data Figure 1: ...
  11. Lab Safety for Biosafety Levels One and Two

    Type
    Protocol
    ...method for decontaminating must be used for proper disposal. Liquid BSL-2 waste can be decontaminated in a ...biohazardous waste. Dispose of waste that may be contaminated with pathogens or chemicals that present a danger...biohazard containers. Biohazardous materials are decontaminated prior to disposal, commonly done with an autoclave...underneath a hood. Clean any spills immediately, and decontaminate as necessary. For large spills that cannot be...participating in BSL-2 work receives a hepatitis B vaccination or titer prior to starting work in the laboratory...a final concentration of 10% bleach for 30 minutes before pouring down the drain. Solid BSL-2 waste can...
  12. CRISPR Library Amplification

    Type
    Protocol
    ...Bottlenecks, fitness differences, and plasmid recombination can all impact the representation of individual...libraries may require modifications dictated by the originating laboratory for optimal results. If you obtained...replication and antibiotic selection). This recombination, at a low rate, is not typically a problem as...lentiviral particles. See below for options if the recombinant band makes up a significant proportion of the...electrocompetent cells that are suitable for unstable or recombination-prone DNA. The use of electrocompetent cells...step. I got a heavy recombined band by digest. Recombination is thought to be in part related to selective...burden on the bacteria. Bacteria that contain a recombinant plasmid likely grow faster in the closed system...
  13. Virus Protocol - Generating Stable Cell Lines

    Type
    Protocol
    ...FBS can be purchased already heat-inactivated, or it can be inactivated in the lab by heating to 56 °C for...transiently-transfected cells, increases reproducibility, as it eliminates the variation associated with repeated transient...antibiotic selection on transduced cells enables elimination of untransduced cells, resulting in a more homogenous...glutamine such as glutaGRO, Corning 25-015-CI) Heat-inactivated FBS Polybrene (10 mg/mL), Millipore TR-1003-G...bottle of DMEM high glucose, add 55 mL of heat-inactivated FBS and 5mL of 100X glutaGRO. Store at 4 °C. ...made with DMEM complete + 10 µg/mL polybrene, the final concentration of polybrene in each well should be...
  14. AAV Titration by qPCR Using SYBR Green Technology

    Type
    Protocol
    ...purified AAV samples with DNase I to eliminate any contaminating plasmid DNA carried over from the production... a blend of dTTP/dUTP to minimize carryover contamination. The master mix should also contain an internal...help stabilize the standards add carrier DNA to a final concentration of 4 ug/mL to each standard dilution...at least 10 times, and use at least half of the final volume (mix with >50 uL if your well contains 100...adeno-associated virus serotype 2-derived inverted terminal repeat sequences. Hum Gene Ther Methods. 2012 ...
  15. Plasmid Cloning by PCR (with Protocols)

    Type
    Protocol
    ...In our case, we will add TAAGCA, resulting in a final Forward Primer sequence of 5'-TAAGCAGAATTCATGTGGCATATCTCGAAGTAC...amplification. We can start similarly, taking the final 18bases of the ORF, including the stop codon (5'...TGGCATATCTCGAAGTACTGAGCGGCCGCTAAGCA-3’) into this calculator we get a final Reverse Primer sequence of 5’-TGCTTAGCGGCCGCTCAGTACTTCGAGATATGCCA... higher competency cells. Additionally, if your final product is going to be very large (>10kb) you might...plasmid to insert. Isolate the Finished Plasmid Finally, you will need to pick individual bacterial colonies... you use, it is important that you sequence the final product. Reference Page Top Index...
  16. AAV Production in HEK293 Cells

    Type
    Protocol
    ...FBS can be purchased already heat-inactivated, or it can be inactivated in the lab by heating to 56 °C for... 2 Cellstack 2, Corning 3269, 1272 cm 2 Heat-inactivated FBS (HI-FBS) Pro-Tip Different brands and lots...bottle of DMEM high glucose, add 55 mL of heat-inactivated FBS and 5 mL of glutaGRO 11 mL of 200 mM L-alanyl-L-glutamine... g of NaCl into deionized water and adjust to a final volume of 1000 mL. Stir at RT until fully dissolved...0.45 μm PES membrane. Add 40% PEG such that the final PEG concentration is 8%. Add 25 mL of PEG solution...
  17. Lentivirus Production

    Type
    Protocol
    ...FBS can be purchased already heat inactivated or it can be inactivated in the lab by heating to 56°C for...chloroquine Polyethylenimine, linear MW 25,000 Da Heat-inactivated FBS 1x PBS pH 7.4 without calcium or magnesium...bottle of DMEM high glucose, add 55 mL of heat-inactivated FBS and 5 mL of glutaGRO. Store at 4 °C. Pro-Tip...of 25 mM chloroquine to the conical so that the final concentration in the dish (once transfection mixes...
  18. Colony Formation Titering Assay

    Type
    Protocol
    ...FBS can be purchased already heat-inactivated, or it can be inactivated in the lab by heating to 56 °C for...glutamine such as glutaGRO, Corning 25-015-CI) Heat-inactivated FBS Polybrene (10 mg/mL), Millipore TR-1003-G...bottle of DMEM high glucose, add 55 mL of heat inactivated FBS and 5 mL of 100X glutaGRO. Store at 4 °C.... Plate (μL) Volume of Cells Added to Plate (μL) Final Viral Dilution 1:10 100 of Stock Virus 900 150 1,350...
  19. Pipetting Protocol

    Type
    Protocol
    ...prevent contamination. When not in use, the tip box should be closed to prevent contamination. Reading...for measuring different samples without cross contamination as long as the tip is changed between samples...not touch the tips with your fingers to avoid contaminating the tip or puncturing your glove. Ensure that...pipette tip into the container in order to avoid contaminating the contents. Once the end of the tip is submerged...
  20. Handling Plasmids from Addgene - Purifying Plasmid DNA

    Type
    Protocol
    ...RNAse to the supernatant after step 6 to eliminate RNA contamination. This is included in the resuspension...genomic DNA will become sheared and will therefore contaminate your purified plasmid DNA. Incubate solution ...Phenol-chloroform extraction removes remaining contaminant proteins and RNase A from the DNA sample. When... This will help to remove proteins and other contaminants from the plasmid DNA. It is also advisable to...
Showing: 141 - 160 of 935 results