This volume details cutting-edge methods that enables engineering of novel functions in mammalian cells. Chapters guide readers through cell-to-cell communication, cell fate control, protein and RNA-based biosensors together with tools for more reliable and faster mammalian genome editing. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and key tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, Mammalian Synthetic Systems aims to ensure successful results in the further study of this vital field.