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  1. Protocol - pLKO.1 – TRC Cloning Vector

    Type
    Protocol
    ...materials D.2 Screening for inserts E. Producing Lentiviral Particles E.1 Recommended materials E.2 Protocol...Published articles H.2 Web resources I. Appendix I.1 Sequence of pLKO.1 TRC-Cloning Vector I.2 Recipes I.3 Warranty...VWR: #7177-48-2. Use at 100 μg/mL. Carbenicillin VWR: #80030-956. Use at 100 μg/mL. C.2 Annealing Oligos...oligo 5 μL Reverse oligo 5 μL 10x NEB buffer 2 35 μL ddH 2 O Incubate for 4 minutes at 95°C in a PCR machine...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 Qiaquick...buffer for EcoRI 1 μL EcoRI 14 μL ddH 2 O Incubate at 37°C for 2 hours. Run digested DNA on 0.8% low melting... For a standard T4 ligation, mix: 2 μL annealed oligo from step C.2 20 ng digested pLKO.1 TRC-cloning ...
  2. General Transfection

    Type
    Protocol
    ... solution can be stored at 4 °C for up to 2 months. After 2 months, discard the tube and thaw a new working... transfected using 1:1, 1:2, 1:3 and 1:6 µg of pRosetta :µg of PEI. The 1:2 and 1:3 ratios provided high... for viral production) Day 1: Transfect Cells Day 2 (am): 18 h post transfection - Remove media, replace...Biological Safety Cabinet 0.5–10 µL single channel pipette 2–20 µL single channel pipette 20–200 µL single channel... 200–1000 µL single channel pipette Ice bucket CO 2 incubator Pipet controller Hazardous waste container... use. Thawed aliquots should be discarded after 1–2 months. 1 mg/mL polyethylenimine, linear MW 25,000...times a week: Monday: Plate 1x10 6 cells in a 75 cm 2 flask in a volume of 15 mL. Wednesday: Plate 1x10 ...
  3. Lentivirus Production

    Type
    Protocol
    ... solution can be stored at 4 °C for up to 2 months. After 2 months, discard the tube and thaw a new working...μg total DNA to μg PEI ratios of 1:1, 1:2, 1:3 and 1:6. The 1:2 and 1:3 total DNA:PEI μg ratios provided...packaging cells Day 1 (pm): Transfect packaging cells Day 2 (am): 18 h post-transfection. Remove media, replace...Biological Safety Cabinet 0.5–10 µL single channel pipette 2–20 µL single channel pipette 20–200 µL single channel... 200–1000 µL single channel pipette Ice bucket CO 2 incubator Pipet controller Hazardous waste container...culture plates. Incubate the cells at 37 °C, 5% CO 2 for ~20 h. Prepare a mixture of the three transfection...plasmid using a variety of ratios. Check the cells 1-2 days after transfection to determine what ratio gives...
  4. Affinity Purification of Recombinant Antibodies with Protein A or Protein G

    Type
    Protocol
    ...phosphate monobasic monohydrate (NaH 2 PO 4 ∙H 2 O), pH 7.0 138 g NaH 2 PO 4 ∙H 2 O 1 L deionized water Adjust...sodium phosphate dibasic (NaH 2 PO 4 ), pH 7.0 142 g of NaH 2 PO 4 ∙H 2 O 1 L deionized water Adjust pH...monobasic monohydrate (NaH 2 PO 4 ∙H 2 O) 610 mL of sterile sodium phosphate dibasic (NaH 2 PO 4 ) Store up to...recombinant antibody. Section 2: Buffer exchange Choose Option 1 or Option 2 based on the concentration ...antibodies. Workflow Timeline Day 1: Purify antibody Day 2 or later: Buffer exchange Equipment Class II, Type...conical tubes NanoDrop spectrophotometer 37 °C, 5% CO 2 incubator with shaking platform set to 120 rpm 37 ... channel pipette 20–200 µL single channel pipette 2–20 µL single channel pipette Reagents Aspirating pipette...
  5. Coomassie Purity Stain of Recombinant Antibodies

    Type
    Protocol
    ...follows: Figure 2 Using the box tool, draw a box around the entire first gel lane (as in Figure 2). Select Analyze... Example for AR0018 (lane 2 in Figure 1): Sample Peak 1 (contaminant) Peak 2 (contaminant) Peak 3 (HC)...choose Use Equation . Select the Show R 2 checkbox. Pro-Tip The R 2 of the trendline should be between 0.95...Equipment Heat block 1–10 µL single channel pipette 2–20 µL single channel pipette 20–200 µL single channel... Add 5 µL of 4X sample buffer to each sample. Add 2 µL 10X reducing agent to each sample. Spin the sample...bottom part of the gel where dye is visible. Section 2: Staining the Gel Place the gel in a plastic tray .... Figure 1 Recombinant antibody preps should have 2 clear bands at ~50 kDa and ~25 kDa corresponding to...
  6. Western Blot

    Type
    Protocol
    ...transfer, block, incubate with primary antibody Day 2: Incubate with secondary antibody Video Watch this... Microcentrifuge 0.5–10 µL single channel pipette 2–20 µL single channel pipette 20–200 µL single channel...Heat block Mini gel tank chamber Power supply iBlot 2 Gel Transfer Device Roller Spatula Platform shaker...running buffer Prestained protein ladder Ethanol iBlot 2 PVDF Mini Stack, Thermo Fisher IB24002 20X TBS Tween...immediately or store at -80 °C until ready to use. Section 2: Determine the total protein concentration and prepare...in deionized water. To prepare 20% ethanol, dilute 2 mL of ethanol into 8 mL of deionized water and mix...the transfer sandwich as follows: Unseal the iBlot 2 PVDF Mini transfer stack. Set the Top Stack to one...
  7. Antibody Validation Using the Indirect ELISA Method

    Type
    Protocol
    ...vapors. Workflow Timeline Day 1: Antigen Coating Day 2: Blocking Day 3: Primary antibody incubation Day 4...with 96-well plates 1–10 µL single channel pipette 2–20 µL single channel pipette 20–200 µL single channel...serial dilutions of the purified antigen as follows: 2 ng/µL : Add 100 µL of 20 ng/µL stock into 900 µL PBS...microfuge tube and vortex. 1 ng/µL : Add 450 µL of 2 ng/µL stock into 450 uL PBS in a microfuge tube and...37 °C for 30 min , or overnight at 4 °C . Section 2: Block the plate Prepare the wash buffer (0.05% Tween...incubate on a microplate shaker set to 400 rpm for 2 h at room temperature or overnight at 4 °C . Section...
  8. Transfection for Recombinant Antibodies

    Type
    Protocol
    ...Warnings HEK293 cells are considered biosafety level 2. Please ensure that you are in compliance with your... 18, 2022 Workflow Timeline Day 1: Seed cells Day 2: Transfect cells Day 3-6: Feed cells Day 7: Harvest...conical tubes Automated cell counter 37 °C, 5% CO 2 incubator with shaking platform set to 120 rpm 37 ...250 mg Benzamidine 25 mL Aprotinin saline solution (2 mg/mL) Mix well and sterilize through a 0.2 µm PES... a 500 mL vented flask.Incubate in a 37 °C, 5% CO 2 incubator on a shaking platform set to 120 rpm. Pro-Tip... not use cells that are over 30 passages. Section 2: Transfection Check the cell density and viability...the culture. Pro-Tip Culture should be between 1.5–2 x 10 6 cells/mL with >95% viability to proceed with...
  9. Immunocytochemistry

    Type
    Protocol
    ...Fluorescent microscope 0.5–10 µL single channel pipette 2–20 µL single channel pipette 20–200 µL single channel... plate 4% Paraformaldehyde 5 mg/mL 4′,6-diamidino-2-phenylindole (DAPI) Bovine serum albumin (BSA) Triton...grow to the desired density before labeling. Section 2: Fixing and permeabilizing cells Gently aspirate the...of the diluted antibody to the wells and incubate 2 h at RT . Remove the primary antibody and dispose ... at Addgene. Equipment and reagents from other vendors should produce similar outcomes when using these...differences between products. Addgene does not endorse or recommend specific products or equipment. Inclusion...
  10. AAV Production in HEK293 Cells

    Type
    Protocol
    ...430825, 175 cm 2 Cellstack 5, Corning 3319, 3180 cm 2 Cellstack 2, Corning 3269, 1272 cm 2 Heat-inactivated...: 50 mM Tris HCl, 150 mM NaCl, 2 mM MgCl 2 Add the following to the 2 L sterile bottle: 1836 mL deionized... solution can be stored at 4 °C for up to 2 months. After 2 months, discard the tube and thaw a new working... mL of PBS. Aspirate PBS and add 2 mL of 0.05% Trypsin/EDTA. Wait ~2 min. Neutralize trypsin by adding...Cell-Stack (CS5) (Link opens in a new window) (3,180 cm 2 - the same surface area as 21 x T-175 flasks). Cell...flasks. Workflow Timeline Day 0: Seed cells in CS2 Day 2: Seed cells in CS5 Day 3 (am): Transfect cells Day...Biological Safety Cabinet 0.5–10 µL single channel pipette 2–20 µL single channel pipette 20–200 µL single channel...
  11. Lentivirus ddPCR Titration

    Type
    Protocol
    ...Activation 95 10 2 1 Denaturation 94 0.5 2 40 Annealing/Extension 60 1 2 40 Enzyme Deactivation 98 10 2 1 Hold ...diploid cells, thus the reason for multiplying by 2. $$V = 2*{copies\ RRE \over copies\ RPP30}$$ Use the viruses...diluted 2-fold serially, the concentration of RRE positive droplets should decrease by a factor of 2 across...Lentivirus is generally considered biosafety level 2+. Please ensure that you are in compliance with your...channel pipette 200–1000 µL single channel pipette 2–50 µL multichannel pipette 20–200 µL multichannel ...Detach cells by incubating with 200 µL TrypLE for 1–2 min. Resuspend cells in 500 µL DMEM complete and transfer... DG8 cartridge into the cartridge holder. Using a 2–50 µL multichannel pipet, load 20 µL of the reaction...
  12. Protocol - How to Ligate Plasmid DNA

    Type
    Protocol
    ...10μL reaction for 5X buffer) 0.5-1μL T4 DNA Ligase H 2 O to a total of 10μL Notes: If the DNA concentrations...DNA to use. Combine the following in a PCR or Eppendorf tube: Vector DNA Insert DNA Ligase Buffer (1μL...
Showing: 1 - 12 of 12 results