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High capacity cdna archive kit

Manufactured by Thermo Fisher Scientific
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The High-Capacity cDNA Archive Kit is a laboratory product designed for the efficient conversion of RNA into complementary DNA (cDNA). It provides a high-capacity, reliable, and reproducible method for generating cDNA archives suitable for various downstream applications.

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1 061 protocols using high capacity cdna archive kit

1

Quantifying HIV-1 gRNA Stability

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Hela cells were washed with 1xPBS and the RNA was extracted using the RNeasy kit (Qiagen) following the manufacturer’s instructions. 1 μg of RNA was reverse transcribed to cDNA using the High Capacity cDNA archive kit (Applied Biosystems). RNA from virions was isolated using QIAamp viral RNA mini kit following the manufacturer’s instructions. Because carrier RNA is added to the lysis buffer, the total RNA isolated was quantified using a Qubit 3.0 fluorometer (ThermoFisher) and normalized so that 20 ng of RNA from each sample was reverse transcribed using the High Capacity cDNA archive kit (Applied Biosystems). PCR reactions were performed in triplicate with Taqman Universal PCR mix using the Applied Biosystems 7500 real-time PCR system. HIV-1NL4-3 gRNA primers were GGCCAGGGAATTTTCTTCAGA/TTGTCTCTTCCCCAAACCTGA (forward/reverse) and the probe was FAM-ACCAGAGCCAACAGCCCCACCAGA-TAMRA. HIV-1NL4-3 total RNA primers were TAACTAGGGAACCCACTGC/GCTAGAGATTTTCCACACTG (forward/reverse) and the probe was FAM-ACACAACAGACGGGCACACACTA-TAMRA. To analyze gRNA stability, 1 µg/ml Actinomycin D (Sigma Aldrich) was added to HeLa cells ~ 45 h post-transfection. RNA was isolated at the designated timepoints and gRNA abundance was measured.
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2

Quantification of Murine Gastric Cytokine Expression

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Total RNA from stomachs of C3H/HeN mice was prepared using the High Pure RNA Tissue Kit according to the recommendations of the manufacturer (Roche, USA). For cytokine mRNA quantification, 5 μg of total RNA was converted into cDNA using a high capacity cDNA archive kit (Invitrogen). Levels of interleukin IL-1β, IL-6, IL-18, IL-10, IL-23, IL-17, tumor necrosis factor alpha (TNF –α), TGF-β, and FoxP3 mRNA were measured by Q-PCR using TaqMan gene expression assays for use in the A CFX Connect™ Real-Time PCR Detection System (Bio-Rad). Transcript levels were normalized to those of mRNA of the endogenous control glyceraldehyde-3-phosphate dehydrogenase (GAPDH), and expressed as the fold change compared to samples from control mice using the Comparative CT method (Bio-Rad).
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3

RNA Extraction and RT-PCR Analysis

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Samples were homogenized in Tri reagent (Sigma-Aldrich, St. Louis, MO, USA) using a TissueLyser (Qiagen) with autoclaved metal beads (Qiagen). RNA concentration and purity were measured with a NanoDrop spectrophotometer (Thermo Fisher Scientific, Bioscience, Waltham, MA, USA), and RNA quality was checked using an Agilent 2100 Bioanalyzer (Agilent Technologies, Santa Clara, CA, USA). For RT-PCR, cDNA was synthesized from the isolated RNA using a High Capacity cDNA Archive Kit (Invitrogen, Life Technologies, Carlsbad, CA, USA).
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4

Analyzing β Cell Gene Expression

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Total RNA from β cells were obtained using the RNAeasy Micro and Mini kits (Qiagen). cDNA was synthesized from the RNA by reverse transcription using the High Capacity cDNA Archive Kit (Invitrogen) and analyzed by QuantStudio 6 Flex Real-Time PCR Systems (Invitrogen) according to the DeltaDelta Ct method. Expression levels were normalized to Ribosomal Protein S18 (Rps18). Primer sequences are shown in Supplementary Table 6.
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5

RNA Isolation and RT-qPCR Quantification

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One microgram of RNA was isolated using Trizol (Invitrogen, Paisley, UK) and reverse-transcribed with the High Capacity cDNA Archive Kit. Real-time PCR was performed on a ABI Prism 7500 PCR system with pre-developed primer and probe assays (Applied Biosystems, Foster City, CA, USA) using the DeltaDelta Ct method. Expression levels are given as ratios to GAPDH [18 (link)].
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6

Quantifying H19 and miR-342-3p Expression

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Total RNAs from PFMCs and CD4+ T cells were extracted by Trizol (Invitrogen, USA), and inversely transcribed into cDNA using the High-Capacity cDNA archive kit (Invitrogen, USA). qRT-PCR was conducted to measure H19 and miR-342-3p expression using PowerUp™ SYBR™ Green Master Mix (Invitrogen, USA). The relative expressions of H19 and miR-342-3p were expressed as a function of threshold cycle (Ct) and analyzed by 2−ΔΔCt method. Specific primers for H19 and miR-342-3p were as follows: H19, F: 5′-GCTCCACTGACCTTCTAAAC-3′; miR-342-3p, F: 5′-UCUCACACAGAAAUCGCACCCGU-3′.
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7

RNA Extraction and cDNA Synthesis

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All samples were homogenized in TriReagent solution (Sigma‐Aldrich, Dorset, UK) with Tissue Lyser (QIAGEN) using previously autoclaved metal beads (QIAGEN). Total RNA was isolated from the biopsies. RNA concentrations and purities were measured using a NanoDrop spectrophotometer (Thermo Scientific, Bioscience, Budapest, Hungary). RNA quality was checked using an Agilent 2100 Bioanalyser. Samples were treated with DNase I (Applied Biosystems, Foster City, CA, USA). RNA was reverse transcribed into complementary DNA (cDNA) using the High Capacity cDNA Archive Kit (Invitrogen, Life Technologies, San Francisco, CA, USA), according to the manufacturer’s instructions.
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8

Gene Expression Analysis by qRT-PCR

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For gene expression analysis, total RNA was isolated by using TRIzol reagent (Invitrogen, Thermo Fisher Scientific, Waltham, MA, USA) according to the manufacturer’s protocol. Then, 2.5 µg of total RNA was reverse transcribed into cDNA by using the High-Capacity cDNA Archive Kit (Invitrogen, Thermo Fisher Scientific, Waltham, MA, USA). qRT-PCR was performed using the ABI Prism 7500 instrument (Applied Biosystem, Thermo Fisher Scientific, Waltham, MA, USA). cDNA amplification was assessed using a specific primer reported by Marzolla et al. [20 (link)] (UCP1, Adbr3, Cidea, DIO2, Cpt1beta, Cpt2, Crat, ACADM, ACADL, Hadha, Aco2, Idh3a Sdhac, Cs), and PowerUp SYBR green dye (Invitrogen, Thermo Fisher Scientific, Waltham, MA, USA) according to the manufacturer’s protocol. All samples were normalized using TATA-box binding protein (TBP) as an internal control; the relative quantification was calculated using the comparative ΔΔCT method, and the values were expressed as 2−ΔΔCT.
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9

RNA Extraction and Quantitative PCR

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Fly and fibroblast RNA were extracted with a Quick-RNA MiniPrep (Genesee Scientific, San Diego, CA, USA, Cat #: 11-328) according to the protocol provided by the manufacturer. Fruit flies were homogenized at 3 cycles at 4000 rpm with 30 s of rest in between cycles with a BeadBug-6 homogenizer using 800 uL of DNA/RNA shield solution (Cat. No. R1100-250) in premade tubes containing 2.0 mm bashing beads provided by Zymo Research (Cat. No. S6003-50). Subsequent RNA extraction was done according to the Quick-RNA MiniPrep plus protocol from Zymo Research (Cat. No. R1051). The cDNA was prepared using reverse transcription of total RNA with a High-Capacity cDNA Archive Kit (Applied Biosystems, Foster City, CA, USA, Cat. No. 4368814). Q-PCR was performed with an ABI 7500 Fast thermocycler (Applied Biosystems, Foster City, CA, USA ) following protocols provided by the manufacturer. qPCRBio Sygreen Mix was used for qPCR according to the protocol provided by the manufacturer (Cat. No. PB20. 11-20). Technical triplicates were processed for each biological replicate.
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10

Transcriptomic Profiling and Validation

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For each sample, RNA was extracted using the QIAGEN Micro RNeasy kit Plus. cDNA was synthesized and amplified using the Ovation Pico WTA System, labeled using the Encore Biotin module and loaded on an Affymetrix GeneChip® HT HG-U133+ PM Array Plate which is designed to assess expression levels of transcripts in the human genome. Transcriptome profiling was performed using two successive batches of cDNA synthesized from each cohort.
Differentially expressed transcripts (DETs) detected by microarray were assessed by qPCR as previously described19 (link),21 (link) using the cDNA template obtained from cohort 1 samples. Transcripts selected for validation had a differential expression between subject groups >20% and a high level of expression (Robust Multi-array Average (RMA) normalized value >7). Primer sets were designed outside of the Affymetrix target except when precluded by the small size of some transcripts (Supplemental Table 2). Selected DETs were also assessed by qPCR in grey matter homogenates of DLPFC area 9; for these samples, total RNA was converted to cDNA using the High Capacity cDNA Archive Kit from Applied Biosystems (Foster City, CA). Primer set efficiencies and normalizers for qPCR are described in Supplemental Methods and Supplemental Table 2.
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