TY - JOUR
T1 - CRISPR-C
T2 - circularization of genes and chromosome by CRISPR in human cells
AU - Møller, Henrik Devitt
AU - Lin, Lin
AU - Xiang, Xi
AU - Petersen, Trine Skov
AU - Huang, Jinrong
AU - Yang, Luhan
AU - Kjeldsen, Eigil
AU - Jensen, Uffe Birk
AU - Zhang, Xiuqing
AU - Liu, Xin
AU - Xu, Xun
AU - Wang, Jian
AU - Yang, Huanming
AU - Church, George M
AU - Bolund, Lars
AU - Regenberg, Birgitte
AU - Luo, Yonglun
PY - 2018/12/14
Y1 - 2018/12/14
N2 - Extrachromosomal circular DNA (eccDNA) and ring chromosomes are genetic alterations found in humans with genetic disorders. However, there is a lack of genetic engineering tools to recapitulate and study the biogenesis of eccDNAs. Here, we created a dual-fluorescence biosensor cassette, which upon the delivery of pairs of CRISPR/Cas9 guide RNAs, CRISPR-C, allows us to study the biogenesis of a specific fluorophore expressing eccDNA in human cells. We show that CRISPR-C can generate functional eccDNA, using the novel eccDNA biosensor system. We further reveal that CRISPR-C also can generate eccDNAs from intergenic and genic loci in human embryonic kidney 293T cells and human mammary fibroblasts. EccDNAs mainly forms by end-joining mediated DNA-repair and we show that CRISPR-C is able to generate endogenous eccDNAs in sizes from a few hundred base pairs and ranging up to 207 kb. Even a 47.4 megabase-sized ring chromosome 18 can be created by CRISPR-C. Our study creates a new territory for CRISPR gene editing and highlights CRISPR-C as a useful tool for studying the cellular impact, persistence and function of eccDNAs.
AB - Extrachromosomal circular DNA (eccDNA) and ring chromosomes are genetic alterations found in humans with genetic disorders. However, there is a lack of genetic engineering tools to recapitulate and study the biogenesis of eccDNAs. Here, we created a dual-fluorescence biosensor cassette, which upon the delivery of pairs of CRISPR/Cas9 guide RNAs, CRISPR-C, allows us to study the biogenesis of a specific fluorophore expressing eccDNA in human cells. We show that CRISPR-C can generate functional eccDNA, using the novel eccDNA biosensor system. We further reveal that CRISPR-C also can generate eccDNAs from intergenic and genic loci in human embryonic kidney 293T cells and human mammary fibroblasts. EccDNAs mainly forms by end-joining mediated DNA-repair and we show that CRISPR-C is able to generate endogenous eccDNAs in sizes from a few hundred base pairs and ranging up to 207 kb. Even a 47.4 megabase-sized ring chromosome 18 can be created by CRISPR-C. Our study creates a new territory for CRISPR gene editing and highlights CRISPR-C as a useful tool for studying the cellular impact, persistence and function of eccDNAs.
UR - http://www.scopus.com/inward/record.url?scp=85058926466&partnerID=8YFLogxK
U2 - 10.1093/nar/gky767
DO - 10.1093/nar/gky767
M3 - Journal article
C2 - 30551175
SN - 0305-1048
VL - 46
SP - e131
JO - Nucleic Acids Research
JF - Nucleic Acids Research
IS - 22
M1 - e131
ER -