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14 protocols using super rt kit

1

Extraction and Detection of miR-340 and mRNA

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Total RNA extraction was carried out using Total RNA isolation kit (Bioteke Corporation, Beijing, China). For MicroRNA, we used miRcute miRNA first-strand cDNA synthesis kit and miRcute miRNA qPCR detection kit (SYBR Green) (Tiangen, Beijing, China) to detect the levels of miR-340 according to the manufacturer's protocol. U6 was as an internal control. Real-time PCR was performed on a CFX96 Real-Time System (Bio-Rad, USA) using the following primers:
MiR-340 stem loop primer: 5'-GTCGTATCCAGTGCGTGTCGTGGAGTCGGCAATTGCACTGGACGTGGATACGACAATCAG-3'; forward primer, 5'-GCGGTTATAAAGCAATGAGA-3'; reverse primer, 5'-GTGCGTGTCGTGGAGTCG-3'; U6 forward primer, 5'-GCTTCGGCAGCACATATACTAAAAT-3'; reverse primer, 5'-CGCTTCACGAATTTGCGT. For mRNA, we put 2 μg of total RNA to reverse-transcribed with BioTeke super RT Kit (Bioteke Corporation, Beijing, China) to synthesize cDNA samples. 2 ml of cDNA product were used to polymerase chain reaction (PCR) amplification with Go Tag qPCR Master Mix (Promega, USA) on a thermal cycler using the following primers.
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2

Breast and Mouse Cell RNA Extraction and qRT-PCR

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For breast cell lines, total RNA from cells was extracted with TRIzol reagent (Invitrogen, Waltham, MA) following the manufacturer’s instruction, and complementary DNA was synthesized using moloney murine leukemia virus (M-MLV) reverse transcriptase with random primers. cDNA was generated with BioTeke super RT kit (Bioteke, Beijing, China) according to the manufacture’s protocol. qRT-PCR was performed using SYBR Premix Ex TaqTM [TaKaRa (Beijing, China), RR820A]. The RT-PCR primer sequences are listed in Supplementary Data 3.
For mouse primary MECs, total RNAs from sorted YFP+ cells were purified by the Allprep DNA/RNA Micro kit (Qiagen, Germantown, MD), followed by amplification of RNA and generation of cDNA with QuantiTect Whole Transcriptome Kit (Cat. NO. 207043) according to manufacture’s protocol. qRT-PCR was performed using FastStart SYBR Green Master (Roche). The RT-PCR primer sequences are listed in Supplementary Data 3.
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3

Breast and Mouse Cell RNA Extraction and qRT-PCR

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For breast cell lines, total RNA from cells was extracted with TRIzol reagent (Invitrogen, Waltham, MA) following the manufacturer’s instruction, and complementary DNA was synthesized using moloney murine leukemia virus (M-MLV) reverse transcriptase with random primers. cDNA was generated with BioTeke super RT kit (Bioteke, Beijing, China) according to the manufacture’s protocol. qRT-PCR was performed using SYBR Premix Ex TaqTM [TaKaRa (Beijing, China), RR820A]. The RT-PCR primer sequences are listed in Supplementary Data 3.
For mouse primary MECs, total RNAs from sorted YFP+ cells were purified by the Allprep DNA/RNA Micro kit (Qiagen, Germantown, MD), followed by amplification of RNA and generation of cDNA with QuantiTect Whole Transcriptome Kit (Cat. NO. 207043) according to manufacture’s protocol. qRT-PCR was performed using FastStart SYBR Green Master (Roche). The RT-PCR primer sequences are listed in Supplementary Data 3.
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4

RT-qPCR Gene Expression Analysis

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cDNA was generated from RNA using the BioTeke super RT kit (Bioteke, Beijing, China) according to the manufacturer’s protocol. qPCR was carried out using a SYBR GREEN mastermix (Solarbio, Beijing, China). PCR products were subjected to Sanger sequencing. Data were analyzed using the 2−ΔΔCt method and normalized to the expression levels of beta-actin (ACTB) or U6 small nuclear RNA. All primers are described in Additional file 1: Table S1.
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5

RNA Extraction and Quantification

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RNA isolation and qRT-PCR assays were performed as described previously (37 (link)). Total RNA from cells was extracted with the miRNeasy Mini Kit (Qiagen), and complementary DNA was synthesized using moloney murine leukemia virus (M-MLV) reverse transcriptase with random primers. cDNA was generated with the BioTeke super RT kit (Bioteke) according to the manufacture’s protocol. qRT-PCR was performed using SYBR Premix Ex TaqTM (TaKaRa). The relative expressions of genes were calculated by normalization to the internal control Actin. Primers are listed in Supplementary Table 1.
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6

Quantifying KDM2A mRNA Expression in ccRCC

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All the tissues were used to determine KDM2A mRNA level. Total mRNAs of ccRCC and paracancer tissues were extracted using TRIzol reagent (Invitrogen, Carlsbad, CA, USA.) following the manufacturer’s protocols. Reverse-transcribed cDNA synthesis was performed with BioTeke Super RT kit (BioTeke, Beijing, China). Real-time PCR was conducted using 2 × Power Taq PCR MasterMix (BioTeke, Beijing, China) and SYBR Green (BioTeke, Beijing, China) according to the manufacturer’s instructions. β-actin acted as an internal control. The primers were synthesized as follows: KDM2A Forward 5′-GGCAGTAGGAATCAAGGACC-3′, Reverse 5′-ACCCGACAGCAGTGAGTAGA-3′; β-actin: Forward 5′-CACTGTGCCCATCTACGAGG-3′, Reverse 5′-TAATGTCACGCACGATTTCC-3′. PCR conditions were as follows: initial denaturation at 94 °C for 5 min, followed by 40 cycles of 94 °C for 15 s, 60 °C for 20 s, and 72 °C for 30 s. Each reaction was set up 3 times and the expression level of KDM2A was quantified using the 2−△△Ct method.
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7

RNA Extraction and qPCR Analysis

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We used TRIzol reagent (Invitrogen, Carlsbad, CA, USA) to extract total RNA from tissues or cells. RNA purity and concentration were determined using a NANO 2000 Spectrophotometer (Thermo Fisher Scientific, Waltham, MA, USA) at 260 and 280 nm. cDNA was generated from RNA using the BioTeke super RT kit (Bioteke, Beijing, China) according to the manufacturer’s protocol. Subsequently, qPCR was carried out using a SYBR GREEN mastermix (Solarbio, Beijing, China). Data were analyzed using the 2-ΔΔCt method and normalized to the expression levels of β-Actin or U6. All primers are described in Table S1.
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8

Quantification of Apoptosis-Related Genes

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Total RNA was isolated using Trizol reagent. cDNA was synthesized from total RNA (0.2-2 µg) using the Bioteke Super RT Kit (BioTeke Corporation, P. R. China). Real-time quantitative PCR (qPCR) was performed using DNA-binding dye SYBR Green (Roche, P. R. China). Amplification was performed using the following primers: β-actin forward primer 5'-CCAGCCGAGCCACATCGCTC-3', reverse primer 5'-ATGAGCCCCAGCCTTCTCCAT-3';
Bcl-2 forward primer 5'-CAGCTGCACCTGACGCCCTT-3', reverse primer 5'-CCCAGCCTCCGTTATCCTGGA-3'; Bax forward primer 5'-GATCAGCTCGGGCACTTTAG-3', reverse primer 5'-TTGCTGATGGCAACTTCAAC-3';
Caspase-3 forward primer 5'-CTGACTGGAAAGCCGAAACTC-3', reverse primer 5'-CGACCCGTCCTTTGAATTTCT-3'; GR forward primer 5'-GTGAAATGGGCAAAGGCCATAC-3', reverse primer 5'-GAAGAGAAACGAGCAAGCATAG-3'; MR forward primer 5'-GGCTACCACAGTCTCCCTGA-3', reverse primer 5'-AGAACGCTCCAAGGTCTGA-3'; and CRH forward primer 5'-CAGAACAACAGTGCGGGCTCA-3', reverse primer 5'-GGAAAAAGTTAGCCGCAGCCT-3'. Using the 2 -∆Ct method (Livak and Schmittgen, 2001) , relative expression levels of Bcl-2, Bax, Caspase-3, GR, MR, and CHR mRNA were calculated for each sample after normalization to the housekeeping gene β-actin.
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9

Quantifying Gene and RNA Expression in A549 Cells

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Total RNA was extracted from A549 and A549/DDP cells using EZ-10 RNA Mini-Preps KitS (BIO BASIC INC, China). Total RNA was reverse transcribed to cDNA using Bioteke super RT Kit (Bioteke Corporation, China). The Real-Time PCR reactions were carried out in a 96-well microtiter plate using the power 2×SYBR Real-Time PCR Premixture kit (Bioteke Corporation, China) and Real-Time PCR (Eppendorf, USA). All samples were analyzed in triplicate in three independent experiments. The uorescence of the PCR products was detected by the same apparatus. The number of cycles for the ampli cation plot to reach the threshold limit (Ct value) was used for quanti cation. β-actin and U6 were used as endogenous controls. Using the Ct values obtained by the analysis software, the relative expression levels of EGR1 and MRP1 mRNAs, lncRNA HOTAIR, and miR-6807-3p were calculated through the 2 -ΔΔCt algorithm[26-28]. The primers used in PCR are shown in Table 4.
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10

RNA Extraction and cDNA Synthesis Protocol

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Total RNA lysate was extracted from tissue samples or cell lines using Trizol (Invitrogen, Carlsbad, CA, USA) based on standard protocols, and cDNA synthesis was performed using a Super RT Kit (BioTeke, Beijing,China) following the manufacturer's protocol with the following primers:
UT‐B forward: 5′‐AATGTTCATGGCGCTCACCT‐3′, and reverse: 5′‐ACAAGCTGGCAATCCAACCT‐3′
GAPDH primers used for the human tissues:
Forward: 5′‐TGGTATCGTGGAAGGACTCATGAC‐3′
Reverse: 5′‐TGCCAGTGAGCTTCCCGTTCAGC‐3′
GAPDH primers used for the B16 cells:
Forward: 5′‐AGAAGGCTGGGGCTCATTTG‐3′
Reverse: 5′‐AGGGGCCATCCACAGTCTTC ‐3′
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