SYBR Green qPCR Supermixes are ready-to-use solutions for quantitative real-time PCR (qPCR) experiments. They contain SYBR Green, a fluorescent dye that binds to double-stranded DNA, and all the necessary components for qPCR amplification and detection.
A total of 14 pairs of GC samples (Additional file 1: Table S1) were collected and the relative expression of genes in the RS model was detected. The study was approved by the Ethics Committee of Renmin Hospital of Wuhan University (No. NCT03972956V1.1), and we have obtained informed consents from the patients for using GC samples (No. SAMPGICU2019-2). Total RNA was extracted using Tissue Total RNA Isolation Kit (Foregene, Wuhan, China) as per the manufacturer’s protocol and RNA (2 μg) was reverse transcribed to cDNA using the PrimeScriptTM RT reagent Kit (TaKaRa, Osaka, Japan). Quantitative PCR (qPCR) was performed using the SYBR Green qPCR Supermixes (Bio-Rad) on the CFX 192 Connect Real-Time PCR system (Bio-Rad, USA). The qPCR analysis was performed in triplicates with the designed primers (Table 1). The relative expression was normalized to GAPDH using the 2-ΔΔCT method.
List of primers
Gene
Primer sequence (5′–3′)
SLIT2
Forward: GCACCATTGAAAGAGGAGCA
Reverse: GCTTTCCTTGGGATTGCCTG
SFRP2
Forward: ACCGAGGAAGCTCCAAAGGTA
Reverse: GAGCCACAGCACCGATTTCT
SCRG1
Forward: CATTTCTGGGATGGGAAGGGA
Reverse: GTGGGAAATCAGGAATGGTGTT
MFAP5
Forward: CAGCGTAAGAGGAGAGAGACAC
Reverse: CAGCAAGAAACAGCAGCACCT
EFEMP1
Forward: TGAAATGCAGACTGGCCGAA
Reverse: TCTACAGTTGTGCGTCCCTG
COL8A1
Forward: AAGGAGATGCCCCACTTGC
Reverse: GGACCTTGTTCCCCTCGTAA
ABCA8
Forward: AAGAACGCAAAACAGACCGC
Reverse: TTTGGCATCAGGGATGTGCT
Xiang R., Song W., Ren J., Wu J., Fu J, & Fu T. (2021). Identification of stem cell-related subtypes and risk scoring for gastric cancer based on stem genomic profiling. Stem Cell Research & Therapy, 12, 563.
Total RNA was extracted from cell lines using Cell Total RNA Isolation kit (Foregene, Chengdu, China) following the manufacturer’s instruction. RNA (1 μg) was reverse‐transcribed to complementary DNA (cDNA) according to the protocol of the PrimeScript RT reagent kit (TaKaRa, Osaka, Japan). qRT-PCR was carried out on the iQ5 Real-Time PCR Detection System (Bio-Rad, Hercules, CA, USA) using the SYBR Green qPCR Supermixes (Bio-Rad). Primer sequences were listed in Table 2. Cycle threshold (Ct) of each gene was standardized to GAPDH using the 2−ΔΔCT method. Each experiment was conducted in triplicate.
Primer sequences for five hub genes and β-actin
Gene
Primer sequence
PDCD6
Forward: ATGGCCGCCTACTCTTACC
Reverse: TCCTGTCTTTATCGACCCTCTG
TCOF1
Forward: AGTCTCCAGCAAGAAAGGCG
Reverse: TCCTCTTCTGGCTTCTTGGC
TRIM28
Forward: TGTTTCCACCTGGACTGTCA
Reverse: CCAGCAGTACACGCTCACAT
EZH2
Forward: TGCAGTTGCTTCAGTACCCATAAT
Reverse: ATCCCCGTGTACTTTCCCATCATAAT
FAM83D
Forward: AGAGCGGCAATTCCACTTCG
Reverse: TGCCAGAATGAAGGCCAAGG
β-actin
Forward: CATGTACGTTGCTATCCAGGC
Reverse: CTCCTTAATGTCACGCACGAT
Zhu G., Xia H., Tang Q, & Bi F. (2021). An epithelial-mesenchymal transition-related 5-gene signature predicting the prognosis of hepatocellular carcinoma patients. Cancer Cell International, 21, 166.
Total RNA was isolated using TRIzol reagent (Invitrogen) and reverse-transcribed using Moloney murine leukemia virus reverse transcription kit (Promega, Madison, WI, USA). qRT-PCR was conducted by using SYBR® Green qPCR supermixes (Bio-Rad, Berkeley, CA, USA). Mature miRNA expression analysis was performed with miRNA real-time PCR quantitation kit (Applied Biosystems, Foster City, CA, USA). Glyceraldehyde 3-phosphate (GAPDH) and U6 served as reference controls. PCR primers were as follows:
Liang H., Chen Y., Li H., Yu X., Xia C., Ming Z, & Zhong C. (2020). miR-22-3p Suppresses Endothelial Progenitor Cell Proliferation and Migration via Inhibiting Onecut 1 (OC1)/Vascular Endothelial Growth Factor A (VEGFA) Signaling Pathway and Its Clinical Significance in Venous Thrombosis. Medical Science Monitor : International Medical Journal of Experimental and Clinical Research, 26, e925482-1-e925482-9.
Total RNA was extracted using Cell Total RNA Isolation kit (Foregene, Chengdu, China) following the manufacturer’s protocol, and RNA (1 μg) was reverse‐transcribed to cDNA using the PrimeScript RT reagent kit (TaKaRa, Osaka, Japan). Quantitative real-time PCR (qPCR) was conducted using the SYBR Green qPCR Supermixes (Bio-Rad) on the CFX 192 Connect Real-Time PCR system (Bio-Rad, U.S.A.). The qPCR analysis was performed in triplicate with the primers shown in Table 2. The relative expression levels were normalized to GAPDH using the 2−ΔΔCT method.
Zhu G., Pei L., Yang F, & Zhang C. (2022). A robust immune-related lncRNA signature for the prognosis of human colorectal cancer. Bioscience Reports, 42(7), BSR20220078.
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