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5 protocols using pcr primers

1

Quantitative PCR Analysis of Breast Cancer Cells

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Total RNA was isolated from breast cancer cell lines using the TRIzol reagent (Invitrogen, Carlsbad, CA, USA), and RNA was reverse transcribed into cDNA using M-MuLV reverse transcriptase (Takara Bio, Otsu, Japan). Quantitative real-time polymerase chain reaction (qRT-PCR) was performed using the Cobas z 480 detection system (Roche, Basel, Switzerland) and SYBR Prime-Script RT-PCR kit (Takara Bio, Otsu, Japan). The following PCR primers were used (Genscript. Nanjing, China):
Results were normalized to respective internal controls. The Ct-value for each sample was calculated using the ΔΔCt method, and results were expressed as 2−Δ;ΔCt.
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2

Wnt/β-Catenin Pathway Regulation in Rat AECII Cells

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The following were obtained: sheep anti-rabbit horseradish peroxidase (HRP)-conjugated secondary antibody and RIPA lysis buffer (Cell Signaling Technology, MA, USA); BCA protein and, StarSignal chemiluminescent assay kits (Vazyme, Nanjing, China); StarScript II First-strand cDNA Synthesis Mix with gDNA Remover, 2 × RealStar Green Fast Mixture (with ROXII), and TRIGene (TaKaRa, Dalian, China); polyvinylidene difluoride (PVDF) membranes (Millipore, Burlington, USA); GSK3β, p-GSK3β, cyclin D1, Dvl-1, and β-catenin primary antibodies (ZENBIO Biotech, Chengdu, China); GAPDH primary antibody (Goodhere Biotech, Hangzhou, China); PCR primers (Genscript Biotech, Nanjing, China); MDA and SOD assay kits (Solarbio Life Sciences, Beijing, China); immunohistochemistry kit (MXB, Fujian, China), rat AECII cells (Bnbio, Beijing, China); Roswell Park Memorial Institute (RPMI) 1640, trypsin, penicillin, and streptomycin (Gibco, Thermo Fisher Scientific Inc., USA); fetal bovine serum (Biological Industries, Beth Haemek, Israel); lipofectamine 3000 (Invitrogen, Thermo Fisher, USA); AnnexinV-fluorescein isothiocyanate (FITC)/propidium iodide (PI) apoptosis detection kit and Cell Counting Kit-8 (Vazyme, Nanjing, China); and MSAB (Wnt/β-catenin pathway inhibitor (Selleck, Shanghai, China).
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3

Quantifying Cardiac Gene Expression

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Total RNA from myocardial tissues and H9c2 cells was isolated with TRIzol reagent (Tiangen, Beijing, China) and converted into cDNA using reverse transcriptase
(Tiangen, Beijing, China). The relative expression levels of miR-145-5p, NOH-1, TNF-α, IL-1β, and IL-6 were determined using a SYBR Green-based qRT-PCR assay
(Solarbio) with the relevant primers. Expression of 5S or glyceraldehyde-3-phosphate dehydrogenase (GAPDH) served as the internal reference. The sequences of
all the PCR primers (GenScript, Nanjing, China) were as follows: 5’- GTCCAGTTTTCCCAGGAATCC -3’ (forward) and 5’- GCAGGGTCCGAGGTATTC -3’ (reverse) for
miR-145-5p, 5’- GATCTCGGAAGCTAAGCAGG -3’ (forward) and 5’- TGGTGCAGGGTCCGAGGTAT -3’ (reverse) for 5S, 5’- TTTCCTAAACTACCGACTCTTCC -3’ (forward) and 5’-
TTGTCCCACATTGGTCTCCC -3’ (reverse) for NOH-1, 5’- CGGAAAGCATGATCCGAGAT -3’ (forward) and 5’- AGACAGAAGAGCGTGGTGGC -3’ (reverse) for TNF-α, 5’-
TTCAAATCTCACAGCAGCAT -3’ (forward) and 5’- CACGGGCAAGACATAGGTAG -3’ (reverse) for IL-1β, 5’- AACTCCATCTGCCCTTCA -3’ (forward) and 5’- CTGTTGTGGGTGGTATCCTC -3’
(reverse) for IL-6, and 5’- CGGCAAGTTCAACGGCACAG -3’ (forward) and 5’- CGCCAGTAGACTCCACGACAT -3’ (reverse) for GAPDH.
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4

Quantitative Analysis of RNA Biomarkers

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Total RNA was extracted from cell or tissue samples by Trizol (Invitrogen™). Exosomal RNA was extracted with a kit (Norgen BioTek, NGB-58000). The first strand cDNA synthesis reaction system was prepared in RNase free PCR tube, and theEasyScript first strand cDNA synthesis Supermix k it is used to reverse transcribe RNA into cDNA. SYBR Green qPCR Supermix and Applied Biosystems® 7500 sequence detection system was used to detect the RNA level. GAPDH was used as the internal reference of XIST, and U6 was used as the internal reference of miRNA. PCR primers were purchased from genscript Biotechnology Co., Ltd. The primer sequences were: XIST forward 5’-ACGCTGCATGTGTCCTTAG-3’ and reverse 5’-GAGCCTCTTATAGCTGTTTG-3’; GAPDH forward 5’-TCAAGAAGGTGGTGAAGCAGG-3’ and reverse 5’-TCAAAGGTGGAGGAGTGGGT-3’; miR-655 forward 5’-TGCGCATAATACATGGTTAACC-3’; miR-374c forward 5’-TGCGCATAATACAACCTGCTAA-3’; miR-5590 forward 5’-TGCGCAATAAAGTTCATGTAT-3’; miR-129-1 forward 5’-TGCGCAAGCCCTTACCCCAAAA-3’; miR-129-2 forward 5’-TGCGCAAGCCCTTACCCCAAA-3’; reverse 5’-CCAGTGCAGGGTCCGAGGTATT-3’;U6 forward 5’-CGCTTCGGCAGCACATATAC-3’ and reverse 5’-AAATATGGAACGCTTCACGA-3’. Relative expression was calculated using the 2−△△CT method.
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5

Molecular Analysis of Cardiac Biomarkers

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The equipment used in this study included an Olympus BX51 light microscope (Olympus Corporation, Tokyo, Japan); complete Freund’s adjuvant (Sigma-Aldrich, St. Louis MO, USA); reverse transcription kit (K1699) (Thermo Fisher Scientific, Waltham, MA, USA); a fluorescence-based quantitative polymerase chain reaction (PCR) kit (RR420A) (TaKara, Tokyo, Japan); PCR primers (GenScript, Nanjing, China); anti-BNP antibody (ab19645) (Abcam, Cambridge, UK); anti-NPR-A antibody (GTX109810) (Genetex, Irvine, CA, USA); anti-GAPDH antibody (ab9485) (Abcam, Cambridge, UK); secondary antibody (ab6789) (Abcam, Cambridge, UK); ECL kit (34094) (Thermo Fisher Scientific, Waltham, MA, USA). Other reagents used were obtained locally and were of pure analytical grade.
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