Total RNA of LAUD tumor tissues and paired noncancer tissues or LAUD cell lines and HBE cells was extracted by using
RNAsimple kit (Tiangen, Beijing, China), followed by reverse-transcribed to cDNA via a
Reverse Transcription kit (Takara Biotechnology Co., Ltd.). Quantitative RT-PCR was conducted with the
SYBR Green qPCR kit (Tiangen, Beijing, China) and 2
−ΔΔCq method was employed to calculate the relative RNA expression. GAPDH and U6 were used as an internal control. The sequences of the primers used in this study were as follows:
circ-ZNF609:
Forward: 5ʹ-GCCACACTACCAGACAACATC-3ʹ
Reverse: 5ʹ-TAATACGACTCACTATAGGGAACCGGCTACACTGCGG-3ʹ
hsa-miR-1224-3p:
Forward: 5ʹ- CCCCACCTCCTCTCTCCTCAG-3ʹ
ETV1:
Forward: 5ʹ-TGGCAGTTTTTGGTAGCTCTTC-3ʹ
Reverse: 5ʹ-CGGAGTGAACGGCTAAGTTTATC-3ʹ
GAPDH:
Forward: 5ʹ-GGAGCGAGATCCCTCCAAAAT-3ʹ
Reverse: 5ʹ-GGCTGTTGTCATACTTCTCATGG-3ʹ
U6:
Forward: 5ʹ- GCTTCGGCAG CACATATACTAAAAT-3ʹ
Reverse: 5ʹ- CGCTTCACGAATT TGCGTGTCAT-3ʹ
Zuo Y., Shen W., Wang C., Niu N, & Pu J. (2020). Circular RNA Circ-ZNF609 Promotes Lung Adenocarcinoma Proliferation by Modulating miR-1224-3p/ETV1 Signaling. Cancer Management and Research, 12, 2471-2479.