Addgene Protocols

---

On this page you'll find practical lab protocols that you can use for a wide range of applications, with videos for select protocols in the right-hand column. You can find much more video content on the Addgene Video Page. We hope that you'll find these protocols useful in your own work. Please feel free to email us at [email protected] with any questions.

Name	Description	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 Bacteria	Isolate single bacterial colonies on an agar plate	Watch the Video!
Inoculating a Liquid Bacterial Culture	Prepare and grow bacteria in liquid medium	Watch the Video!
Creating Bacterial Glycerol Stocks	Store bacterial strains or plasmids for long term use
DNA Purification	Miniprep, phenol-chloroform extract, and precipitate DNA
DNA Quantification	Measure DNA concentration with a spectrophotometer
Restriction Digests	Cut and analyze plasmid DNA with restriction enzymes
Agarose Gel Electrophoresis	Separate DNA by size on an agarose gel	Watch the Video!
DNA Ligation	Assemble DNA using DNA ligase
Bacterial Transformation	Introduce DNA into a bacterial strain	Watch the Video!
Diagnostic Restriction Digest	Verify a plasmid using restriction enzymes	Watch the Video!
Polymerase Chain Reaction (PCR)	Basic PCR protocol with tips and FAQ
Purifying DNA from an Agarose gel	Isolate specific DNA bands cut from a gel
How to Design a Primer	Key considerations when designing primers
Sequence Analysis	Verify important plasmid features using sequence analysis

Name	Description	Link to Video
Restriction Cloning	Assemble plasmids by restriction digest and ligation
Cloning by PCR	Generate restriction sites by PCR
Modification by Annealed Oligo Cloning	Add a short stretch of DNA to a plasmid
Gibson Assembly	Combine overlapping DNA fragments in a single reaction
Ligation Independent Cloning (LIC)	Scarless cloning with Type II restriction enzymes and T4 polymerase

Name	Description	Link to Video
General Transfection	Introduce plasmid DNA to mammalian cells
Lentivirus Production	Produce lentivirus with a polyethyenimine (PEI) transfection protocol
Fluorescence Titering Assay for Lentivirus	Quantify virus using fluorescence measurements
Colony Formation Titering Assay for Lentivirus	Quantify virus by counting antibiotic resistant colonies
Generating Stable Cell Lines with Lentivirus	Genomically integrate your DNA sequence into a cell line
Isolating a Monoclonal Cell Population by Limiting Dilution	Generate monoclonal cell lines from a polyclonal pool of stable cells
AAV Production in HEK293 Cells	Produce adeno-associated virus to deliver your gene of to the target of your choice
AAV Purification by Iodixanol Gradient Ultracentrifugation	Purify adeno-associated virus from a preparation produced in mammalian cells	Watch the Video!
AAV Titration by qPCR Using SYBR Green Technology	Use qPCR to measure the physical titer of your adeno-associated virus preparation