A synthetic protein-level neural network in mammalian cells.

ABSTRACT: Artificial neural networks provide a powerful paradigm for nonbiological information processing. To understand whether similar principles could enable computation within living cells, we combined de novo-designed protein heterodimers and engineered viral proteases to implement a synthetic protein circuit that performs winner-take-all neural network classification. This "perceptein" circuit combines weighted input summation through reversible binding interactions with self-activation and mutual inhibition through irreversible proteolytic cleavage. These interactions collectively generate a large repertoire of distinct protein species stemming from up to eight coexpressed starting protein species. The complete system achieves multi-output signal classification with tunable decision boundarie

SUBMITTER: Chen Z 

PROVIDER: S-EPMC11758091 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature