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Analysis of the accumulation of mutations in self-replicating RNAs using barcoded EGFP library


ABSTRACT: Directed evolution in mammalian cells can facilitate the engineering of mammalian-compatible biomolecules and can enable synthetic evolvability for mammalian cells. We engineered an orthogonal alphaviral RNA replication system to evolve synthetic RNA-based devices, enabling RNA replicase-assisted continuous evolution (REPLACE) in live mammalian cells. To investigate the process of mutation accumulation in REPLACE system, we constructed a repRNA-v4 plasmid library containing 64 barcodes. Using this library, we analyzed the differences in mutation accumulation for different RNAs upon entry into cells, before and after molnupiravir treatment, and before and after FACS sorting. The results demonstrated that these barcoded RNAs undergo similar processes of mutation accumulation, providing evidence that mutations are commonly accumulated across different RNAs.

ORGANISM(S): Mesocricetus auratus

PROVIDER: GSE235338 | GEO | 2024/07/07

REPOSITORIES: GEO

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