Gene Editing System and Gene Editing Method

摘要

The present invention relates to a CRISPR/Cas system comprising guide RNAs and a Cas protein, wherein the guide RNAs are composed of the following two parts: the guide RNAs are capable of respectively binding to two sequences of target sequences having SEQ ID NO: 2, SEQ NO: 3 and SEQ ID NO: 4 in eukaryotic B2M genes. The system exhibits a relatively high single-gene knockout rate for B2M. The present invention further relates to a gene editing method for T cells using the system, which method provides an efficient, safe and simple process for producing universal T cells.