Two randomly selected circRNAs that were upregulated in ALV-J-resistant chickens (chr1:194735582-194744050- and chr23:5549365-5549645-) and two randomly circRNAs that were downregulated in ALVJ-resistant chickens (chr8:1033880-1047222- and chr5:58225735-58230830-) were selected to validate the expression levels of the significantly differentially expressed circRNAs by quantitative real-time polymerase chain reaction (qRT-PCR). The qRT-PCR data for the four circRNAs was consistent with the trends observed using circRNA sequencing.
Circular RNA alterations are involved in resistance to avian leukosis virus subgroup-J-induced tumor formation in chickens.