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Abi 7900ht thermal cycler

Manufactured by Thermo Fisher Scientific
Sourced in United States

The ABI 7900HT thermal cycler is a high-throughput instrument designed for real-time PCR analysis. It features 384-well block format and supports a wide range of quantitative and qualitative PCR applications.

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21 protocols using abi 7900ht thermal cycler

1

Quantification of MyoG Expression

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RNA was extracted from transfected MB differentiated for 36 hours using Trizol (Cat No. 15596-026, Thermo Scientific) as per manufacturer’s instructions. cDNA was synthesised using Superscript III (Cat No. 18080-044, Thermo Scientific), amplified by qRT-PCR using Maxima SYBR Green 2X PCR master mix (Cat No.K0222, Fermentas) and analysed in triplicates on a ABI 7900HT thermal cycler (Applied Biosystems). Amplicons were verified by sequencing and dissociation curves. Relative level of endogenous MyoG mRNA in the transfected samples was calculated with respect to untransfected control after normalising to corresponding GAPDH levels in the transfected samples. Fold change between samples was calculated using [2(−ΔΔCt)] method. Primers: GAPDH 5′-AAGGCCGGGGCCCACTTGAA-3′, 5′-AGCAGTTGGTGGTGCAGGATGC-3′; MyoG 5′-CAACCAGCGGCTGCCTAAAGTGG 3′, 5′-GCATTCACTGGGCACCATGGGC -3′.
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2

Quantifying Muscle Gene Expression

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Prior to sampling for RNA, dissected samples of quadriceps muscle were snap-frozen and mashed under liquid nitrogen to powder. Samples were stored at -80°C until analyses. Total RNA was isolated from musculus quadriceps using RNeasy Plus Universal Mini Kit (Qiagen, Valencia, CA, USA), and reverse transcription was performed using Maxima First Strand cDNA Synthesis Kit (Thermo Fisher, Waltham, MA, USA) according to the manufacturer's protocol. Real-time PCRs were carried out applying Maxima SYBR Green qPCR Master Mix (Thermo Fisher, Waltham, MA, USA) and run on an ABI 7900HT thermal cycler (Applied Biosystems, Life Technologies, Carlsbad, CA, USA) using rat-specific primer pairs shown in Table 1. Data were normalized to the expression of housekeeping gene ribosomal protein S29 (Rps29) which was not altered by the treatment.
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3

Quantitative Gene Expression Analysis

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Total RNA was isolated from liver tissues and primary human hepatocytes using Trizol (Invitrogen). cDNA was amplified using 3 μg of total RNA using qScript cDNA SuperMix (Quanta BioSciences, Beverly, MA, USA). Quantitative real time PCR (RT-PCR) analysis was performed using SYBR® Select Master Mix (Applied Biosystems) and an ABI 7900HT thermal cycler (Applied Biosystems, Thermo Fisher Scientific). Ct values were normalized to 18s rRNA and are expressed as fold change over samples from mice fed NC or cultured human hepatocytes without NCT.
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4

Quantification of Gene Expression in Rat Adipocytes

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Total RNA was isolated from differentiated primary rat adipocytes using RNeasy Universal Plus Mini Kit (Qiagen, Valencia, CA, USA) and reverse transcription was performed using Maxima First Strand cDNA Synthesis Kit (Thermo Fisher, Waltham, MA, USA) according to the manufacturer’s protocol. Real-time PCR was carried out by applying Maxima Sybr Green qPCR Master Mix (Thermo Fisher, Waltham, MA, USA) and run on an ABI 7900HT thermal cycler (Applied Biosystems, Life Technologies, Carlsbad, CA, USA) using rat-specific primer pairs, as shown in Table 1. Data were normalized to the expression of housekeeping gene ribosomal protein S29 (Rps29) which was not altered by QCT or OTA.
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5

Quantifying Gene Expression Alterations

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Total cellular RNA extraction was performed with TRIzol (Invitrogen) and chloroform. cDNA was synthesized with the Verso cDNA kit (ThermoFisher Scientific) and subjected to qPCR analysis with Radiant™ Green 2X qPCR Mix (Alkali Scientific) on an ABI 7900 HT thermal cycler (Applied Biosystems). The value of each cDNA was calculated using the ΔΔCT method and normalized to the values of the house-keeping gene control, the18s ribosomal RNA. The data were plotted as fold change. The primer sequences are listed below.
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6

Quantitative Real-Time PCR Analysis

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RNA was extracted from grafts or mouse and human culture cells (RNeasy Plus Minikit, QIAGEN). cDNA was synthesized from total RNA using AffinityScript MultiTemp RT (Agilent) with an oligo(dT)18 primer. Real-time PCR was performed using PlatinumTaq DNA polymerase (Thermofisher) and SYBR-green (Thermofisher) on an ABI7900HT thermal cycler (Applied Biosystems). A robust global normalization algorithm, using expression of the housekeeping genes ribosomal protein S11 (Rps11), β-actin (Actb), and α-tubulin (Tuba), was used for all experiments, as described elsewhere (Bordería et al., 2008 (link)). In brief, all crossing threshold (Ct) values were first adjusted by median difference of all samples from Actb. Each individual sample was then further corrected by the median Ct value of the three corrected housekeeping controls for that sample. Nominal copy numbers were calculated by assuming 2500 molecules of Actb mRNA per cell, and an amplification efficiency of 93% using the difference in Ct value (ΔCt method).
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7

Quantitative Analysis of Telomere Length

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DNA was extracted from c-Kit-enriched BM cells and mean telomere length was analyzed using a quantitative PCR assay as described [34 (link)]. All samples were analyzed in triplicate using an ABI 7900HT thermal cycler (Applied Biosystems).
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8

Quantification of Tissue RNA Levels

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Prior to sampling for RNA, dissected samples from musculus quadriceps and epididymal adipose tissues were removed, frozen in liquid nitrogen and stored at –80°C until analysis. Total RNA was isolated using RNeasy Plus Universal Mini Kit (Qiagen, Valencia, CA, United States) following the manufacturer’s instructions. The reverse transcription of isolated RNA was performed using Maxima First Strand cDNA Synthesis Kit (Thermo Fisher, Waltham, MA, United States) according to the manufacturer’s protocol. Real-time PCRs were carried out applying Maxima SYBR Green qPCR Master Mix (Thermo Fisher, Waltham, MA, United States) and run on an ABI 7900HT thermal cycler (Applied Biosystems, Life Technologies, Carlsbad, CA, United States) using rat-specific primer pairs as described previously (Dobrocsyova et al., 2020 ). Data were normalized to the expression of housekeeping gene ribosomal protein S29 (Rps29) which was not altered by the treatment.
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9

Quantifying Key Hypoxia-Angiogenesis Regulators in HMEC-1 Cells

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RNA was isolated from cultured HMEC-1 cells using TRIzol Reagent (Invitrogen). 1 ug RNA was converted to cDNA using SuperScript II reverse transcriptase and random hexamere primers (Life Technologies). CSE (assay Hs00542284_m1), CBS (assay Hs00163925_m1), 3MST (assay Hs00560401_m1), VEGF-A (assay Hs00900055_m1) and VEGFR2 (assay Hs00911700_m1) mRNA expression was measured with a Taqman Gene expression assay (Applied Biosystems). For normalization, TATA box binding protein (TBP) was included as housekeeping gene using the following primers (FW: GCCCGAAACGCCGAATAT; REV: CCGTGGTTCGTGGCTCTCT) and probe (ATCCCAAGCGGTTTGCTGCGG) (Eurogentec). Reactions were performed on an ABI7900HT thermal cycler (Applied Biosystems). The comparative Ct method (2−ΔCt method) was used to calculate relative gene expression.
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10

Liver RNA Extraction and qRT-PCR Analysis

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Total RNA from liver tissue slices was extracted using the RNeasy Mini Kit (Qiagen, Hilden, Germany) according to the manufacturer’s instructions. The RNA concentrations were measured on a NanoDrop spectrophotometer (ND-2000). cDNA was synthesized using High-Capacity RNA-to-cDNA™ Kit (ThermoFisher Scientific, 4387406) in a volume of 20 μl. cDNA was diluted to 5 ng/μl and 2 μl/reaction (10 ng) and then used for qRT-PCR analysis. PCR reactions were performed in a 10 μl reaction volume containing qPCR master mix (AccuPower ® 2X GreenStar™ qPCR Master Mix). qRT-PCR reactions were performed on a ABI7900HT thermal cycler (Applied Biosystems, Foster City, CA, USA). Relative gene expression was calculated using the 2-ΔΔCt method with GAPDH as housekeeping gene (see in Additional file 1: Table S1).
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