Multiplex gene editing by CRISPR–Cpf1 using a single crRNA array

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Abstract
Multiplexed genome editing is simplified by harnessing the ability of Cpf1 to process its own pre-crRNA. Targeting of multiple genomic loci with Cas9 is limited by the need for multiple or large expression constructs. Here we show that the ability of Cpf1 to process its own CRISPR RNA (crRNA) can be used to simplify multiplexed genome editing. Using a single customized CRISPR array, we edit up to four genes in mammalian cells and three in the mouse brain, simultaneously.