Optimized and Simplified Technique for the Production and Culture of Precision-Cut Liver Slices.

This protocol presents a simple system for the creation and culture of Precision-cut Liver Slices (PCLS). PCLS contains all cells in an intact environment and, therefore, resembles a mini model of the whole organ. They enable the study of live tissues while replicating their complex phenotypes. This protocol allows the preparation of slices from mouse livers using a vibratome and standard laboratory equipment. Protocols for producing and culturing PCLS lack standardization and can vary quite drastically depending on the tissue of interest, the type of vibratome used, and the need for oxygen. These can be difficult to reproduce in some laboratories that have only access to a basic vibratome and common tissue culture facilities. We have put together a protocol focusing on the importance of some key steps within the varied protocols already available. This protocol, therefore, emphasizes the importance of the embedding method, the cutting orientation, a dynamic versus a static system, and the relevance of a minimum volume of culture. This protocol can be established and reproduced in a simple manner in most laboratories that have access to a basic tissue slicer. Taken together and following this protocol, PCLS can stay alive for a minimum of 4 days. PCLS is a simple, economical, and reproducible model to study pathophysiological and therapeutic screening for organs such as the liver.