Genome-wide inactivation of porcine endogenous retroviruses (PERVs)
- PMID: 26456528
- DOI: 10.1126/science.aad1191
Genome-wide inactivation of porcine endogenous retroviruses (PERVs)
Abstract
The shortage of organs for transplantation is a major barrier to the treatment of organ failure. Although porcine organs are considered promising, their use has been checked by concerns about the transmission of porcine endogenous retroviruses (PERVs) to humans. Here we describe the eradication of all PERVs in a porcine kidney epithelial cell line (PK15). We first determined the PK15 PERV copy number to be 62. Using CRISPR-Cas9, we disrupted all copies of the PERV pol gene and demonstrated a >1000-fold reduction in PERV transmission to human cells, using our engineered cells. Our study shows that CRISPR-Cas9 multiplexability can be as high as 62 and demonstrates the possibility that PERVs can be inactivated for clinical application of porcine-to-human xenotransplantation.
Copyright © 2015, American Association for the Advancement of Science.
Comment in
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Elimination of porcine endogenous retroviruses from pig cells.Xenotransplantation. 2015 Nov-Dec;22(6):411-2. doi: 10.1111/xen.12210. Epub 2015 Nov 14. Xenotransplantation. 2015. PMID: 26566739 No abstract available.
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Getting rid of PERVs.Nat Biotechnol. 2016 Jan;34(1):46. doi: 10.1038/nbt.3448. Nat Biotechnol. 2016. PMID: 26744982 No abstract available.
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