Precise CRISPR/Cas9 editing of the NHE1 gene renders chickens resistant to the J subgroup of avian leukosis virus.
Proc Natl Acad Sci U S A
; 117(4): 2108-2112, 2020 01 28.
Article
in En
| MEDLINE
| ID: mdl-31964810
ABSTRACT
Avian leukosis virus subgroup J (ALV-J) is an important concern for the poultry industry. Replication of ALV-J depends on a functional cellular receptor, the chicken Na+/H+ exchanger type 1 (chNHE1). Tryptophan residue number 38 of chNHE1 (W38) in the extracellular portion of this molecule is a critical amino acid for virus entry. We describe a CRISPR/Cas9-mediated deletion of W38 in chicken primordial germ cells and the successful production of the gene-edited birds. The resistance to ALV-J was examined both in vitro and in vivo, and the ΔW38 homozygous chickens tested ALV-J-resistant, in contrast to ΔW38 heterozygotes and wild-type birds, which were ALV-J-susceptible. Deletion of W38 did not manifest any visible side effect. Our data clearly demonstrate the antiviral resistance conferred by precise CRISPR/Cas9 gene editing in the chicken. Furthermore, our highly efficient CRISPR/Cas9 gene editing in primordial germ cells represents a substantial addition to genotechnology in the chicken, an important food source and research model.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Poultry Diseases
/
Avian Leukosis
/
Avian Leukosis Virus
/
Avian Proteins
/
Sodium-Hydrogen Exchanger 1
Limits:
Animals
Language:
En
Journal:
Proc Natl Acad Sci U S A
Year:
2020
Type:
Article
Affiliation country:
Czech Republic