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6 protocols using taqman gene specific primers

1

Quantitative gene expression analysis in SMCs

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Total cellular RNA was isolated from SMCs cultured in 0.2% fetal bovine serum (FBS) Dulbecco’s Modified Eagle Medium (DMEM) or from common carotid arteries using standard procedures, and retro-transcribed to cDNA. Real time qPCR was performed with the following gene specific primers (Nox4: Forward primer-5′TGGCCAACGAAGGGGTTAAA3′, Reverse primer-5′ACACAATCCTAGGCCCAACA3′; EPHX2: Forward primer-5′CAGGAGGACACAGACACCATA3′, Reverse primer-5′TCTCAGGTAGATTGGCTCCAC3′) using SYBR-Green-based detection, or TAQMAN gene specific primers (Applied Biosystems), according to the following cycling conditions: denaturation, annealing, and extension at 95 °C, 57 °C and 72 °C for 10 s, 30 s, and 10 s, respectively, for 40 cycles. β-actin was used as internal control.
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2

Quantification of Nox4 and EPHX2 Expression

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Total cellular RNA was isolated from EC cultured in 0.2% FBS EBM-2 or from common carotid arteries and aorta using standard procedures, and retro-transcribed to cDNA. Quantitative PCR was performed with the following gene specific primers: Nox4, Forward primer-5′TGGCCAACGAAGGGGTTAAA3′, Reverse primer-5′ACACAATCCTAGGCCCAACA3′; EPHX2: Forward primer-5′CAGGAGGACACAGACACCATA3′, Reverse primer-5′TCTCAGGTAGATTGGCTCCAC3′ using SYBR-Green-based detection, or Taqman gene specific primers (Applied Biosystems), using the following cycling conditions: denaturation, annealing, and extension at 95 °C, 57 °C and 72 °C for 10 s, 30 s, and 10 s, respectively, for 40 cycles. β-actin or 18S were used as endogenous control.
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3

Bim mRNA Half-Life Determination by qRT-PCR

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The half-life of Bim mRNA was determined by qRT-PCR analysis following actinomycin D treatment. Total cell RNA was isolated using TRIzol according to the manufacturer's instructions (Invitrogen). RNA was then reverse transcribed using the TaqMan Reverse Transcription Reagents Kit (Applied Biosystems) and amplified on a 7300 Real-Time PCR system (Applied Biosystems) with TaqMan gene-specific primers (Applied Biosystems). The relative amount of RNA for each gene was expressed after normalization to β-actin. All standards and samples were tested in triplicate wells, and data were analyzed using SDS software version 2.3.
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4

Comparative Gene Expression Analysis

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To compare gene expression changes of MSMB, NCOA4, KLK2 and KLK3 from different transfection and isogenic clones, cells were harvested at 60–90% confluence for total RNA extraction with Qiagen RNeasy Mini kit (Qiagen, Hilden, Germany) and quantified by Nanodrop spectrophotometer (ThermoScientific, ND-8000). 1μg extracted RNA were then reverse transcribed into cDNA with the High Capacity cDNA Reverse Transcription Kit (Applied Biosystems #4368814). For real time PCR, TaqMan gene-specific primers were ordered from Life Technologies for MSMB (Hs00159303_m1), NCOA4 (Hs01033772_g1), KLK2 (Hs00428383_m1) and KLK3 (Hs02576345). GAPDH was used as internal control. qPCR reactions were setup according to the TaqMan Gene Expression Assays protocol and performed on a ViiA7 real time PCR system (Applied Biosystems, Life Technologies). Each sample was amplified in duplicate, average gene expression and standard deviation were calculated. Relative gene expression was analyzed with the ΔΔCT method (Applied Biosystems, cms_042380).
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5

Quantitative Gene Expression Analysis of Cultured Cells

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RNA was extracted from cultured cells using Allprep RNA Mini Kit (Qiagen, Valencia, CA) and measured by Nanodrop. First strand cDNA synthesis was performed using the SensiFAST kit (Bioline). Pre-designed TaqMan gene specific primers (Life Technologies, Carlsbad, CA) were used (Supplemental Methods). qPCR reactions were set up on an automated robot platform (Gilson, Inc Middleton, WI, USA) and PIPETMAX qPCR assistant. Samples were normalized to normal human lung tissue. All reactions were performed in triplicate from RNA isolated from three independent biological experiments.
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6

Quantification of Neuroendocrine Gene Expression

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RNA was extracted from cells using Allprep DNA/RNA Mini Kit (Qiagen, Valencia, CA). SuperScript VILO cDNA Synthesis Kit (Invitrogen, Carlsbard, CA) was used for the synthesis of cDNA from RNA. The following predesigned TaqMan gene specific primers (Life Technologies) were used: CHGA (Assay ID: Hs00900375_m1), CHGB (Assay ID: Hs01084631_m1), GAPDH (Assay ID: Hs99999905_m1), SCG3 (Assay ID: Hs00203076_m1), and SST (Assay ID: Hs00356144_m1). Quantitative RT-PCR reaction mixture was prepared containing 2 uL cDNA (10 ng), 1x TaqMan Gene Expression Master Mix (Life Technologies), and 1x Gene Expression Assay (Life Technologies). Gene expression levels were quantified using the ViiA 7 Real-Time PCR system (Life Technologies). The following thermocycling condition was used: 50°C for 2 min, 95°C for 10 min, and 40 amplification cycles of 95°C for 15 s/60°C for 1 min. Relative gene expression levels were calculated by the 2 -ΔΔCT method, where delta delta CT value (ΔΔCT) = (CT target -CT housekeeping ) -(CT control -CT housekeeping ). All expression values were normalized to the housekeeping gene GAPDH. If gene expression was not detectable after 40 amplification cycles, the sample was excluded for further statistical analysis. Error bars are the relative quantification minimum (RQ min ) and maximum (RQ max ) which represent the standard error of the mean (SEM) expression levels.
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