Article Title: Immunoprecipitation of Tri-methylated Capped RNA
Figure Lengend Snippet: RNA immunoprecipitation of (TMG)-capped primary miRNAs (Pri-miRNAs) in quiescent human foreskin fibroblasts (HFFs) RT-PCR data shows the RNA immunoprecipitation of Pri-miR-34a and Pri-miR-3188 in quiescent HFFs (as well as the positive control snRNA U7), but not Pri-miR-423 using an antibody against (TMG)-capped RNAs. Total RNA was extracted using TRIzol Reagent, and 10 μg of RNA was diluted in NET-2 buffer, precleared and incubated with Protein G Sepharose 4 Fast Flow beads loaded with 15 μl of control antibody (Normal Rabbit Serum, EMD-Millipore) or with antibody recognizing the (TMG)-cap (Anti-m3G-cap, rabbit polyclonal, Synaptic Systems). Beads were rinsed five times with NET-2 buffer and were resuspended in G-50 buffer. RNA was extracted from the beads by phenol-chloroform-isoamyl alcohol extraction and resuspended in 20 μl of nuclease-free water. Immunoprecipitated tri-methylated capped RNA was converted to cDNA using iScript cDNA synthesis kit (Bio-Rad), followed by RT-PCR, and visualized after gel electrophoresis.
Article Snippet: Protein G Sepharose® 4 Fast Flow Beads (GE Healthcare, catalog number: 17061801) Normal rabbit serum (control, EMD Millipore, catalog number: NS01L-1ML) Sodium chloride (NaCl) (Fisher Scientific, catalog number: S671-3) NP-40 (Thermo Fisher Scientific, catalog number: 28324) Tris base (Fisher Scientific, catalog number: BP152-5) Hydrochloric acid (HCl) (VWR, catalog number: BDH7204-1) RNasin™ Plus RNase inhibitor (Promega, catalog number: N2611) NaOAc (AMRESCO, catalog number: 0602) Ethylenediaminetetraacetate acid (EDTA), pH 8 (Thermo Fisher Scientific, catalog number: AM9260G) Ethylenediaminetetraacetate acid (EDTA) (AMRESCO, catalog number: 0105) Sodium dodecyl sulfate (SDS) (Thermo Fisher Scientific, catalog number: AM9822) Phenol/Chloroform/Isoamyl Alcohol; 125:24:1 mixture, pH 4.5 (Thermo Fisher Scientific, catalog number: AM9720) Agarose LE (Denville Scientific, catalog number: CA3510-8) iScript™ cDNA Synthesis Kit (Bio-Rad Laboratories, catalog number: 1708891) Sso Advanced™ Universal SYBR® Green Supermix (Bio-Rad Laboratories, catalog number: 1725274) PARIS™ Kit (Thermo Fisher Scientific, catalog number: AM1921) Boric acid (Fisher Scientific, catalog number: A73-1) NET-2 Buffer (see Recipes) G-50 Buffer (see Recipes) 1× TBE (see Recipes)
Techniques: Immunoprecipitation, Reverse Transcription Polymerase Chain Reaction, Positive Control, Incubation, Flow Cytometry, Methylation, Nucleic Acid Electrophoresis