Getting Started with Tissue Culture

Mammalian cell culture is a vital tool for studying biological processes and producing laboratory tools. This video offers best practices for newcomers to tissue culture, emphasizing the importance of proper lab equipment like CO2 incubators, inverted microscopes, and biosafety cabinets.

Establishing and maintaining a sterile work environment is crucial. This involves properly setting up the biosafety cabinet, allowing it to warm up, and meticulously wiping down all surfaces and reagents with 70% alcohol. It's also recommended to use filtered pipettes and tips to reduce contamination risk.

Body fluids are a major source of contamination. Always wear a clean lab coat and gloves. Before handling cells, inspect cultures macroscopically for odors or color changes (yellow media indicates contamination) and microscopically for early signs of microbial growth.

To prevent cross-contamination, use new pipette tips for each culture contact and separate reagent bottles for different cell lines. Screen cell lines regularly for mycoplasma and create a cell bank of early passage cells to preserve genetic integrity and ensure reproducibility of data.

Treat cells gently during aspiration, trypsinization, and seeding. When aspirating, place the pipette in a corner. When trypsinizing, add the enzyme to the flask surface and gently rotate. For seeding, thoroughly mix the cell suspension with a serological pipette to ensure even distribution and consider using a master mix for multiple vessels to improve uniformity.