New frontiers and applications of cell-free systems

Cell-free systems (CFS) have emerged as a key platform in the field of synthetic biology. This is used to understand natural biological systems outside living cells. It contains cell extracts from procaryotes, eucaryotes, which provides a controlled environment for complex biological processes that leads to the synthesis of valuable biomolecules. It lacks natural mechanisms, yet it contains all the necessary components, which are required for the synthesis of desired biomolecules. It is specifically designed for the elimination of barriers to molecular transport across cell membranes. This chapter highlights a basic CFS and its various applications, such as high-throughput protein synthesis and expression, non-canonical amino acids incorporation in proteins, biosensors, drug discovery and in the metabolic engineering. This chapter also focuses on the various case studies and recent advancements to study how these systems are used for the transformation of biotechnology and provides rapid, more adaptable, and affordable solutions in the field of research as well as industrial levels. Altogether, CFS emerged as promising platform in the field of biotechnology, biomedicine, and environmental sustainability.