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Showing: 901 - 920 of 955 results
  1. Lentivirus ddPCR Titration

    Type
    Protocol
    ... forget to factor this into your calculations later (see calculation example below). Seed 300,000 cells...well plate sealer by gently touching the screen. Preparation of the Master Mix Place a ddPCR plate onto... Foil Heat Seal on the PCR plate with the red line facing up. If the plate sealer is not at temperature...place the PCR plate with the foil onto the metal support block. Place the block in the plate sealer and ...transfer the plate to the Droplet Reader. Open the QuantaSoft software to set up a new plate layout. Designate... a CSV file which will be used to calculate the titer. Calculations In the experimental setup above, the...dilution into 6-well plate 2.5 25 5 50 10 100 20 200 40 400 80 800 160 1600 To calculate the titers, first...
  2. AAV ddPCR Titration

    Type
    Protocol
    ...02-FCP-C ddPCR 96-well PCR plates, Bio-Rad, 12001925 48-well dilution plate, Bio-Rad, MLL4801 Pierceable... Foil Heat Seal on the PCR plate with the red line facing up. If the plate sealer is not at temperature...place the PCR plate with the foil onto the metal support block. Place the block in the plate sealer and ...transfer the plate to the Droplet Reader. Open the QuantaSoft software to set up a new plate layout. Designate...compliance with your institution’s biosafety regulations. Equipment Class II, Type A2 Biological Safety...Bio-Rad, DX200 Thermal Cycler, Bio-Rad, T100 PCR Plate Sealer, Bio-Rad, PX1 1–10 µL single channel pipette...reagents and the NTC with virus. Pre-warm the 96-well plate sealer by gently touching the screen. Prepare the...
  3. AAV Titration by qPCR Using SYBR Green Technology

    Type
    Protocol
    ...standards and samples onto the qPCR plate Set up and load the 96-well plate: Load 5 μL of each standard in ... 58 °C 30 sec / read plate/ repeat 39x from step 3 / melt curve Example of plate set-up: 1 2 3 4 5 6 7...these institutions. This protocol is for a 96-well plate with 20 μL reaction volume. Last Update: February...Estimate of time required: ~3 h Workflow Timeline Plate set-up: 2 h qPCR run: 1.5 h Data analysis: 30 min...min Equipment qPCR instrument Heating plate Pipettors 1–10 µL single channel pipette 20–200 µL single ...Nuclease-free water Microcentrifuge tubes 96-well optical plate Pipette tips General Considerations Always run standards... the samples being tested. Always include a No Template Control (NTC), i.e master mix + water Whenever...
  4. Protocol - Bacterial Transformation

    Type
    Protocol
    ... We recommend that you plate 50 μL on one plate and the rest on a second plate. This gives the best chance...they will be able to grow once plated on the antibiotic containing agar plate. This step is not critical ...antibiotic resistances. Plate some or all of the transformation onto a 10 cm LB agar plate containing the appropriate...isn't too much liquid media on the agar plates. If the agar plate doesn't dry adequately before the cells... What went wrong? Check that you are plating on an LB Agar plate containing the correct antibiotic. The...also make their own competent cells. This is a relatively simple procedure and is useful for performing...Watch the protocol video below to learn how to isolate single bacterial colonies. Equipment Shaking incubator...
  5. Protocol - pLKO.1 – TRC Cloning Vector

    Type
    Protocol
    ...cells, following manufacturer’s protocol. Plate on LB agar plates containing 100 μg/mL ampicillin or carbenicillin... transfected, plate 7×105 HEK-293T cells in 5 mL of media in a 6 cm tissue culture plate. Incubate cells...initiating your experiment. Day 1: a. Plate target cells in ten 6 cm plates and grow at 37°C, 5% CO 2 overnight...that you maintain one uninfected plate of cells in parallel. This plate will serve as a positive control... A.1 The RNAi Consortium A.2 Map of pLKO.1 A.3 Related plasmids B. Designing shRNA Oligos for pLKO.1 B...terminal repeat. RRE Rev response element. A.3 Related Products The following plasmids available from ... have at least 3 nucleotide mismatches to all unrelated genes. TIP: Addgene recommends that you select...
  6. Video Library

    Type
    Protocol
    ...window) Video Link Description Related Page Making LB Agar Plates Create plates to culture bacteria in the...the lab Pouring LB Agar Plates Protocol Streaking Bacteria on Plates Isolate single bacterial colonies ...Antibiotic Plating Create plates to culture bacteria in the lab Over-Agar Antibiotic Plating Protocol AAV...colonies on an agar plate Streaking Bacteria on Plates Protocol Diagnostic Restriction Digest Verify a plasmid...efficiency Bacterial Transformation Protocol Inoculating a Liquid Bacterial Culture How to prepare and...and grow bacteria in a liquid medium Inoculating a Liquid Bacterial Culture Protocol Getting Started with... an Agarose Gel Gel purification allows you to isolate and purify DNA fragments based on size. Following...
  7. What is Polymerase Chain Reaction (PCR)

    Type
    Protocol
    ...If you are using the same template DNA for all your reactions, the Template DNA can be added to the master...particularly for GC-rich templates. What does each ingredient specifically do? Template DNA: Contains the portion...amplifying for analysis and manipulation. It is essential that the template DNA and primer are complementary...Taq Polymerase. From a single copy of DNA (the template), a researcher can create thousands of identical...polymerases from other species. In addition to the template DNA and the Taq polymerase, PCR requires free ...micrograms of target DNA from just a few nanograms of template DNA through several cycles of denaturation, annealing... initiation step heats the double stranded DNA template strand to the point where the strands start denaturing...
  8. Virus Protocol - Generating Stable Cell Lines

    Type
    Protocol
    ... from different cells in the population. Once the polyclonal populations are growing well and have been...Consider expanding populations transduced with a variety of dilutions and pick the population that has the ...days. Single cells were then plated in individual wells of a 96-well plate and left undisturbed for 13 ...a more homogenous (but still polyclonal) cell population. Depending on the transducibility of the cell...selection may be a vital step for obtaining a population of cells that have taken up the lentiviral transgene... well (each well gets one dilution, so a 6-well plate will hold 5 dilutions plus one 'no virus' control...be 10 µg/mL. Pro-Tip Transducing too many cells relative to the number of virus particles reduces the transduction...
  9. Immunocytochemistry

    Type
    Protocol
    ...rocking platform. Permeabilize cells for 10 min at room temperature ( RT ) on a rocking platform in 500...rocking platform. Section 3: Labeling with antibody Block for 20 min at RT on a rocking platform in 500...Pipette controller Pipette tips and pipettes Rocking platform Tweezers Fluorescent microscope 0.5–10 µL single...Poly-D-lysine coated coverslips HeLa cells 24-well plate 4% Paraformaldehyde 5 mg/mL 4′,6-diamidino-2-phenylindole... in each well of a 24-well cell culture treated plate. Seed 5 x 10 3 HeLa cells per well. Allow the HeLa...cells Gently aspirate the media from the 24-well plate. Wash each well with 500 µL of PBS, remove the wash.... Wash 3x for 5 min in 500 µL PBS on a rocking platform. Dilute the fluorescently-labeled secondary antibody...
  10. Plasmid Cloning by PCR (with Protocols)

    Type
    Protocol
    ...+ insert plate should have significantly more colonies than the recipient plasmid alone plate. The recipient...function in the same buffer, as this will save time later. In our example, we will use EcoRI and NotI to ligate...TGGCATATCTCGAAGTACTGAGCGGCCGCTAAGCA-3’) into this calculator we get a final Reverse Primer sequence of 5’-...If you are amplifying from a plasmid or simple template, there is very little chance for mis-priming, ...from genomic DNA, a cDNA library, or by RT-PCR. Isolate your PCR product from the rest of the PCR reaction... used. Follow the manufacturer’s instructions. Isolate Your Insert and Vector by Gel Purification Run ... agarose gel and conduct a gel purification to isolate the DNA. When running a gel for purification purposes...
  11. Plasmid Cloning by Restriction Enzyme Digest (with Protocols)

    Type
    Protocol
    ...+ insert plate should have significantly more colonies than the recipient plasmid alone plate. The recipient... as well as a specifically designed test digest later to verify that the insert was cloned in the correct... used. Follow the manufacturer’s instructions. Isolate your insert and vector by gel purification Run ... agarose gel and conduct a gel purification to isolate the DNA. When running a gel for purification purposes...base pairs for each varies, it is difficult to calculate this based on DNA concentration alone. One method...you can expect on your recipient plasmid + insert plate that are not correct. If you have a high number ...number of colonies on your recipient plasmid alone plate, you can try ligating the recipient plasmid alone ...
  12. Western Blot

    Type
    Protocol
    ...microtiter plate. Incubate for 30 min at 37 °C . Determine the absorbance at 590 nm . Calculate the average... a shaking platform. Wash the membrane 3x for 5 min in 1X TBST at RT on a shaking platform. Section 6:... a shaking platform. Wash the membrane 3x for 5 min in 1X TBST at RT on a shaking platform. Prepare the...supply iBlot 2 Gel Transfer Device Roller Spatula Platform shaker Cold room Gel imager -80 °C freezer Reagents... Tween-20 Nonfat milk powder 96-well microtiter plate Chemiluminescence substrate Plastic wrap Primary...average absorbance of the duplicate samples on the plate. Subtract the average absorbance of the blank from...BSA standard concentration versus absorbance. Extrapolate the total protein concentration of the sample...
  13. Protocols for Molecular Biology, Plasmid Cloning, and Viral Preps

    Type
    Protocol
    ...Streaking Bacteria Isolate single bacterial colonies on an agar plate Watch the Video! Inoculating a Liquid Bacterial...new window) Link to Video Making LB Agar Plates Create plates to culture bacteria in the lab Watch the...Video! Over-Agar Antibiotic Plating Quickly add antibiotic to a pre-poured plate Watch the Video! Streaking...your DNA sequence into a cell line Isolating a Monoclonal Cell Population by Limiting Dilution Generate monoclonal...Watch the Video! Purifying DNA from an Agarose gel Isolate specific DNA bands cut from a gel Watch the Video...
  14. Coomassie Purity Stain of Recombinant Antibodies

    Type
    Protocol
    ...Timeline Day 1: Run SDS-PAGE and stain gel Day 1 or later: Image analysis Video Watch this instructional video...Microcentrifuge Electrophoresis chamber Power supply Rocking platform Fume hood Metal spatula Razor blade Plastic tray... in-house standard Before Starting Warm the hot plate to 100 °C. Thaw IgG standard and prestained protein...water for 5 min with gentle agitation on a rocking platform. Pour off the water in the sink. Add 20 mL of ...incubate for 1 h with gentle agitation on a rocking platform. Pour off the SimplyBlue SafeStain in the sink...incubate for 1 h with gentle agitation on a rocking platform. Pour off the water in the sink. Add 100 mL of...incubate for 1 h with gentle agitation on a rocking platform. Pour off the water in the sink. Take a brightfield...
  15. Lentivirus Production

    Type
    Protocol
    ...week: Monday: Plate 1×10 6 cells in a T75 flask in 15 mL DMEM Complete. Wednesday: Plate 1×10 6 cells ...cells at 3.8×10 6 cells per plate in DMEM Complete in 10 cm tissue culture plates. Incubate the cells at 37...previously seeded 10 cm plate. Slowly pipette the transfection mix onto the 10 cm plate, being careful not ...controller Hazardous waste container pH meter Stir plate Magnetic Stir Bar Reagents DMEM high glucose, Corning... in a T75 flask in 15 mL DMEM Complete. Friday: Plate 8×10 5 cells in a T75 flask in 15 mL DMEM Complete...
  16. General Transfection

    Type
    Protocol
    ...week: Monday: Plate 1x10 6 cells in a 75 cm 2 flask in a volume of 15 mL. Wednesday: Plate 1x10 6 cells...cells at 3.8x10 6 cells per plate in DMEM complete in 10 cm tissue culture plates. Incubate the cells at 37... 10 cm plate). 56.7 µL of 1 mg/mL PEI, MW 25,000 Da in 443.3 µL of OptiPro SFM per 10 cm plate Pro-Tip...cells in a T75 flask in a volume of 15 mL. Friday: Plate 8x10 5 cells in a T75 flask in a volume of 15 mL...
  17. Protocol - How to Design Primers

    Type
    Protocol
    ...correspond to sequences on the template molecule (must be complementary to template strand). However, primers...to design primers that are complementary to the template region of DNA. They are synthesized chemically...primers do not need to correspond to the template strand completely; it is essential, however, that the 3’...end of the primer corresponds completely to the template DNA strand so elongation can proceed. Usually ...in size. The structure of the primer should be relatively simple and contain no internal secondary structure...
  18. Protocol - How to Purify DNA from an Agarose Gel

    Type
    Protocol
    ...buffer to add during the DNA isolation step. Finally, you will want to isolate the DNA from the gel. This...Background Information Gel purification allows you to isolate and purify DNA fragments based on size. The procedure..., it is a good idea to place the gel on a glass plate if available. Unlike the plastic tray, this will...determine the concentration of the DNA that you isolated before proceeding to your next intended step with...
  19. Fluorescence Titering Assay

    Type
    Protocol
    ... of PBS. Calculate the fraction of fluorescent-positive cells in each well. When calculating titer, only...compliance with your institution’s biosafety regulations. Workflow Timeline Day 0: Seed 293T cells Day...remaining well, a cell count is required for calculating the titer. Incubate for 48–72 h. Gently aspirate...leading to underestimation of the true titer. Calculate the transduction units per mL (TU/mL) using either...
  20. CRISPR Guide

    Type
    Guide
    ...genomic edits by copying from a DNA donor template . The donor template contains the desired sequence and is...linear dsDNA templates work better for large edits or insertions. When designing the donor template, incorporating...modifying the methylation state of cytosines in a gene’s promoter or by inducing histone acetylation or demethylation...through increased H3K27 acetylation TET1 - activation through cytosine demethylation DNMT3A - repression ...repression through cytosine methylation MQ1 - repression through cytosine methylation with improved kinetics LSD1...detection platform. Based on this non-specific cleavage, a Cas13a-based molecular detection platform, termed...pathway. HDR relies on copying DNA from a matching template to accurately repair or fill in the missing sequence...
Showing: 901 - 920 of 955 results