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Superscript 3 first strand synthesis system for rt

Manufactured by Thermo Fisher Scientific

The SuperScript III First-Strand Synthesis System for RT is a laboratory equipment product designed for the reverse transcription of RNA into cDNA. It provides the necessary reagents and enzymes to facilitate this process, which is a fundamental step in various molecular biology and genomics applications.

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3 protocols using superscript 3 first strand synthesis system for rt

1

Quantifying Nrf2-mediated Antioxidant Genes

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Total RNA was extracted from hippocampal tissue from all groups (A–I) using TRIzol reagent (Invitrogen, UK). Reverse transcription was performed with 1 ng RNA using SuperScript III First-Strand Synthesis System for RT (Invitrogen). Real-time PCR was performed using TaqMan gene expression assays for the following genes: Nrf2 (encoding for nuclear factor erythroid 2-related factor 2 [NRF2]); Nqo1 (encoding for NAD(P)H: quinone oxidoreductase 1); Hmox-1 (encoding for haem oxygenase 1); and Sod2 (encoding for superoxide dismutase 2). All samples were performed in triplicate and normalised to the housekeeping genes Actb and Ppia. Values are expressed as a fold-change relative to group A (WT-EE) for STZ-diabetic mice and group G (Nrf2−/−-EE) for Nrf2−/− mice.
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2

Quantitative Analysis of Gene Expression in IL-6Ra KD Mice

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Total RNA was extracted from brain regions (hippocampus, frontal cortex, cerebellum and hypothalamus), pancreas and liver from male IL-6Ra KD and Cre+/- mice using TRIzol® reagent (Invitrogen). Reverse transcription was performed with 1 ng RNA using SuperScript® III First-Strand Synthesis System for RT (Invitrogen). Real-time PCR was performed using Taqman gene expression assays for IL-6ra (Mm01211445_m1), Socs3 (Mm00545913_s1) and Igfbp1 (Mm00515154_m1). All samples were performed in triplicate and normalised to Cyclophilin A (Ppia; Mm02342430_g1) or actin (Mm02619580_g1). Values are expressed as a fold-change relative to Cre+/-.
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3

Isolation and Analysis of Mouse Taste Buds

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Taste buds were isolated from 6-week-old C57BL/6 male mice as described below, morphologically selected, and collected into RNAlater (Qiagen). The isolated taste buds were then spun down at 3,600 rpm for 5 min before total RNA was extracted using RNeasy micro kits (Qiagen, Valencia, CA) and treated with RNase-free DNase I to avoid genomic DNA contamination according to the manufacturer's protocol. Similarly, RNA was extracted from lingual epithelial sheets devoid of taste buds that were cut out of the tongue epithelium obtained as described below and collected into RNAlater. First-strand cDNA was synthesized using Superscript III First-Strand Synthesis System for RT (Invitrogen). Taqman gene expression assay was performed with THUNDERBIRD Probe qPCR Mix (TOYOBO, Osaka, Japan) on a real-time PCR system (StepOnePlus, Applied Biosystems). Each sample was obtained from one mouse and each assay was run in triplicate. Expression levels were normalized to that of Calhm2 in taste buds after 2-ΔΔCt calculation, with β-actin as the endogenous control. The following Taqman assays were used: Calhm1 (Mm01207259_m1); Calhm2 (Mm00505271_m1); Actb (Mm01205647_g1); Calhm3 (5′ AGGCAGTGTCTCGGTACCT 3′ (F), 5′ CACCACTATCACCAGCAAGGTTAT 3′ (R) and 5′ CCAGCCGATGGCCTGT 3′ (reporter)). All assays were exon-exon boundary spanning.
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