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Abi 7500 sequence detector system

Manufactured by Thermo Fisher Scientific
Sourced in United States, Germany

The ABI 7500 sequence detector system is a real-time PCR instrument designed for quantitative gene expression analysis. It is capable of detecting and quantifying nucleic acid sequences in real-time during the amplification process.

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24 protocols using abi 7500 sequence detector system

1

Quantification of SLIT2 and BMI1 Expression

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Total RNA from transduced (shSLIT2 and control) APL cell lines (NB4 and NB4-R2) and murine hCG-PML-RARA blasts was obtained using TRIzol reagent (Thermo Fisher Scientific, Carlsbad, CA, USA). The cDNA was synthesized from 1 µg of RNA using High-Capacity cDNA Reverse Transcription Kit (Thermo Fisher Scientific). Quantitative PCR (qPCR) was performed with an ABI 7500 Sequence Detector System (Life Technologies, Carlsbad, CA, USA) with the human and murine GAPDH, RPL30, and ACTB Standard Kit as endogenous controls. The murine Slit2 and the human BMI1 gene expression were determined by real-time reverse transcriptase polymerase chain reaction using TaqMan Gene Expression Assay: Slit2, Mm01216521_m1; BMI1, Hs00995519_g1 (Applied BioSystems, Foster City, CA, USA), following the manufacturer’s instructions. The relative quantification value was calculated using the equation 2 − ΔΔCT. A negative “no template control” was included for each probe evaluated.
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2

Nasal Mucosal Cytokine Expression

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Total RNA was isolated from the septal nasal mucosa using TRIzol reagent (Life Technologies, Gaithersburg, MD, USA) on days 1, 7, 14 and 28 after the final intranasal administration of the CSS, and then converted to cDNA using the ReverTra Ace qPCR RT Master Mix with gDNA Remover (Toyobo, Osaka, Japan) according to the manufacturer’s instructions. qPCR analysis was performed using the THUNDERBIRD Probe qPCR Mix or THUNDERBIRD SYBR qPCR Mix (Toyobo) and an ABI 7500 sequence detector system (Life Technologies). The gene-specific primers and probes used were: Rps3 as endogenous control (Life Technologies assay number Mm00656272_m1); Il1b (forward 5′-AGGCAGGCAGTATCACTCATTGT-3′, reverse 5′-CGTCACACACCAGCAGGTTATC-3′); and Tnf (forward 5′-TGTGCCTCAGCCTCTTCTC-3′, reverse 5′-GAGCCCATTTGGGAACTTCT-3′); and Il6 (forward 5′-CTGCAAGAGACTTCCATCCAGTT-3′, reverse 5′-AGGTCTGTTGGGAGTGGTATCC-3′). The expression levels of each gene were normalized to the level of Rps3 expression for each sample.
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3

Metformin and Ruxolitinib Modulate Gene Expression

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Total RNA from HEL and SET2 cells treated with metfomin (10 mM) and/or ruxolitinib (300 nM) was obtained using TRIzol reagent (Thermo Fisher Scientific). The cDNA was synthesized from 1 µg of RNA using High-Capacity cDNA Reverse Transcription Kit (Thermo Fisher Scientific). Quantitative PCR (qPCR) was performed with an ABI 7500 Sequence Detector System (Life Technologies) with specific primers for CCND1 (Cyclin D1, forward: CTCGGTGTCCTACTTCAAATG; reverse: AGCGGTCCAGGTAGTTCAT), CDKN1B (cyclin-dependent kinase inhibitor 1B, also known as p27, forward: ACTCTGAGGACACGCATTTGGT; reverse: TCTGTTCTGTTGGCTCTTTTGTT) and HPRT1 (hypoxanthine phosphoribosyltransferase 1; forward: GAACGTCTTGCTCGAGATGTGA; reverse: TCCAGCAGGTCAGCAAAGAAT). The relative quantification value was calculated using the equation 2−ΔΔCT. A negative “no template control” was included for each primer pair.
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4

PI3K-AKT Pathway Modulation in HEL Cells

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Total RNA from HEL cells treated with metfomin (10 mM) and/or ruxolitinib (300 nM) was obtained using TRIzol reagent (Thermo Fisher Scientific). The cDNA was synthesized from 1 µg of RNA using High-Capacity cDNA Reverse Transcription Kit (Thermo Fisher Scientific). PCR array was performed using the PI3K-AKT Signaling Pathway RT2 Profiler PCR Array kit (#PAHS-058A; SA Biosciences, Frederick, MD, USA) according to the manufacturer’s instructions. mRNA levels were normalized to those detected in untreated cells, and genes that presented a fold change ≥1.5-fold in any treatment were included in the heatmap using Heatmap builder software (The Ashley Lab, Stanford University, CA, USA). Amplification was performed in an ABI 7500 Sequence Detector System (Life technologies).
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5

Quantifying Immune Gene Expression

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Total RNA was isolated from the septal nasal mucosa using TRIzol reagent (Life Technologies, Gaithersburg, MD, United States) on day 40 and then converted to cDNA using the ReverTra Ace qPCR RT Master Mix with gDNA Remover (Toyobo, Osaka, Japan) according to the manufacturer’s instructions. qPCR analysis was performed using the THUNDERBIRD Probe qPCR Mix or THUNDERBIRD SYBR qPCR Mix (Toyobo) and an ABI 7500 sequence detector system (Life Technologies). The gene-specific primers and probes used were: Rps3 as endogenous control (Life Technologies assay number Mm00656272_m1), interleukin 1 beta (Il1b) (forward 5′-AAATACCTGTGGCCTTGGGC-3′, reverse 5′-TCT TCTTTGGGTATTGCTTGGGA-3′), tumor necrosis factor-alfa (Tnfa) (forward 5′-GTAGCCCACGTCGTAGCAAA-3′, reverse 5′-TTGAGATCCATGCCGTTGGC-3′), Il4 (forward 5′-TCGGC ATTTTGAACGAGGTC-3′, reverse 5′-CTGTGGTGTTCTTCG TTGCTG-3′), Il5 (forward 5′-TTGACCGCCAAAAAGAGAA GTG-3′, reverse 5′-CTCAGCCTCAGCCTTCCATT-3′), Il13 (forward 5′-AGCATGGTATGGAGTGTGGAC-3′, reverse 5′-GC TGGAGACCGTAGTGGGG-3′), Il17 (forward 5′-GGACTCTC CACCGCAATGAA-3′, reverse 5′-TTTCCCTCCGCATTGACA CA-3′), Il25 (forward 5′-TGGAGCTCTGCATCTGTGTC-3′, reverse 5′-GATTCAAGTCCCTGTCCAACTC-3′), and Il33 (forward 5′-GGTGAACATGAGTCCCATCA-3′, reverse 5′- CGTCACCCCTTTGAAGCTC -3′). The expression levels of each gene were normalized to the level of Rps3 expression for each sample.
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6

Quantitative PCR of cell cycle genes

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Total RNA was obtained using TRIzol reagent (Thermo Fisher Scientific). The cDNA was synthesized from 1 µg of RNA using High-Capacity cDNA Reverse Transcription Kit (Thermo Fisher Scientific). Quantitative PCR (qPCR) was performed with an ABI 7500 Sequence Detector System using the TaqMan system for AURKA (Hs00269212.m1), AURKB (Hs00177782.m1), ATCB (4310881E-1008027), and GUS (43108881E-0905024) genes (Life Technologies) or SyberGreen System for AURKA, AURKB, BCL2, BCL2L1, BIRC5, BNIP3, BNIP3L, and BIK (Supplementary Table 3). ATCB, GUS, and/or HPRT1 were the reference genes. The relative quantification value was calculated using the equation 2−ΔΔCT. A negative ‘No Template Control’ was included for each primer pair.
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7

Quantification of REST Expression in Mouse Lungs

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Lung tissues of different groups mice were frozen in TRIzolsolution (Invitrogen, Carlsbad, CA, United States). According to the protocol of TRIzol, total RNA was isolated and transcribed to cDNA using the RevertAidTM First Strand cDNA Synthesis Kit (Fermentas, Glen Burnie, MD, United States). The primer sequences were as follows: for REST,
SYBR Green I was used to perform quantitative real-time PCR on an ABI 7500 sequence detector system (Applied Biosystems). Target gene expression was normalized to β-actin using the 2-ΔΔCT method.
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8

Multiplex TaqMan PCR for STI Pathogens

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TaqMan PCRs for the detection of C. trachomatis, N. gonorrhoeae, Ureaplasma spp. and Mycoplasma spp. [9 ] and Trichomonas vaginalis [11 (link)], with detection limits of 25 genome copies per reaction, were carried out on a CFX96 Real time PCR machine (Biorad, Munich, Germany) in a total volume of 25μl containing 2.5μl DNA-solution of the swab specimens in NoROX PCR Mastermix (Qiagen, Hilden, Germany) with primers and probes concentrations as published. Fifty copies of an internal control (IC) plasmid were added as an inhibition control [9 ]. Thermal cycling conditions were as follows: 10min at 95°C for initial denaturation followed by 45 cycles of 95°C for 15s and 60°C for 1min. HSV-2- and CMV-PCRs with detection limits each of 5 copies per reaction were performed with an ABI 7500 sequence detector system (Applied Biosystems, Darmstadt, Germany) as described before [10 (link)]. BlastN search of primers and probes showed no homology with other known STI pathogens, and clinical samples positive for other human herpesviruses and STI pathogens no cross reaction, too.
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9

Quantitative PCR Analysis of Stathmin 1 Expression

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Quantitative PCR (qPCR) was performed with an ABI 7500 Sequence Detector System (Applied Biosystems, Foster City, CA, USA) with specific primers for Stathmin 1 (forward: AGCCCTCGGTCAAAAGAATC; reverse: TTCAAGACCTCAGCTTCATGGG) [38 (link)] and HPRT (hypoxanthine phosphoribosyltransferase 1; forward: GAACGTCTTGCTCGAGATGTGA; reverse: TCCAGCAGGTCAGCAAAGAAT). The relative quantification value was calculated using the equation 2−ΔΔCT [39 (link)]. A negative ‘No Template Control’ was included for each primer pair. The dissociation protocol was performed at the end of each run to check for non-specific amplification. Three replicas were run on the same plate for each sample.
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10

Quantification of Gene Expression

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Total RNA of the samples was prepared with the TRIzol reagent (Thermo Fisher, Waltham, MA) based on the manufacturer's descriptions. Reverse transcription of 1 μg total RNA was performed by using RevertAid RT Reverse Transcription Kits (Thermo Fisher, K1691) according to the manufacturer's protocol. The amplification of target gene was used to determine the transcript abundance and the transcripts of gapdh were used as the internal control. The relative abundance of transcripts was assessed using the ChamQTM Universal SYBR qPCR Master Mix (Q711-02/03, Vazyme Biotechnology) in ABI7500 sequence detector system (Applied Biosystems, Carlsbad, CA). The primers for qRT-PCR are available in Table 1.
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