Document 6528293
Transcription
Document 6528293
Date:______________________ PI/Project/Sample Name(s):__________________________________________ Illumina TruSeq RNA Sample Library Preparation Low Throughput (LT) Protocol, Part # 15015050 Rev. A Modified by USC Epigenome Center v 110330 Preparations: Use only RNAse free diH20 Prior to starting decontaminate with RNAse Zap Spray everything to be used! o o o o o RNA Sample QC: Thaw samples on ice, vortex & centrifuge, keep on ice Assess sample quality via Bio-Rad Experion or Agilent Bioanalyzer RNA Chip Assess sample quantity via Nanodrop (ng/µl) – see Nanodrop protocol Calculate stock volume needed to obtain 2µg (0.1-4µg allowable) to start V(stock) = 2000ng / C(nanodrop) ng/µl Calculate volume RNAse free diH20 needed to bring total up to 50µl. Sample Nanodrop (ng/µl) Volume of Sample Stock for 2µg RNAse free diH20 volume to total 50µl Preparations: § Pre-program Thermocycler with the following programs: a. mRNA Denaturation: 65oC for 5 m, 10oC ∞ b. mRNA Elution: 80oC for 2 m, 25oC ∞ c. Elution-Fragment-Prime: 94oC for 8 m, 10oC ∞ d. 1st Strand: 25oC for 10 m→42oC for 50 m→70oC for 15 m→10oC ∞ e. 2nd Strand: 16oC for 60 m→25oC ∞ ~6 hr to 1st safe stop in protocol DO NOT PROCEED WITHOUT SUFFICIENT TIME! § § § § § Preheat thermocycler lid to 100oC if refrigerated, set centrifuge to -15oC to -25oC Thaw samples & reagents, vortex, centrifuge & keep on ice! - Bead Binding Buffer - Bead Washing Buffer - Elution Buffer Briefly vortex & centrifuge each once thawed Bring RNA Purification Beads to RT (from 4oC), mix thoroughly mRNA-Seq Page 1 of 7. Date:______________________ PI/Project/Sample Name(s):__________________________________________ o o o o o o o o o o o o o o o o o o o o mRNA to cDNA conversion – Purify/Fragment mRNA: Vortex RNA Purification Beads to mix thoroughly Add 50µl RNA Purificatoin beads to 50µl sample, pipet 6x gently to mix, cap & flick mix Thermocycle a. mRNA Denature (65oC for 5 m, 10oC ∞) When reaches 10oC remove from thermocycler, incubate @ RT 5 m Condense beads on magnet ~3 m Without disturbing bead pellet - Remove & discard supernatant Add 200µl Bead Washing Buffer & Condense beads on magnet ~3 m Remove & discard supernatant - DO NOT DISTURB BEAD PELLET! Add 50µl Elution Buffer, pipet 6x gently to mix, cap & flick mix Thermocycle b. mRNA Elution (80oC for 2 m, 25oC ∞)– keep at RT Add 50µl Bead Binding Buffer, pipet 6x gently to mix, cap & flick mix incubate @ RT 5 m, then condense bead pellet on magnet ~3 m § Thaw Elute-Prime-Fragment Mix § leave sample on magnet to minimize disturbing condensed bead pellet Remove & discard supernatant - DO NOT DISTURB BEAD PELLET! Add 200µl Bead Washing Buffer & Condense beads on magnet 5 m Remove & discard supernatant - DO NOT DISTURB BEAD PELLET! Remove from magnet Add 19.5µl Elute-Prime-Fragment Mix, pipet 6x to gently elute sample, cap & flick mix Thermocycle c. Elution-Frag-Prime (94oC for 8 m, 10oC ∞) § Re-freeze Elute-Prime-Fragment Mix immediately after use Remove from thermocycle as soon as reaches 10oC, centrifuge briefly Proceed immediately to Synthesize 1st Strand cDNA – place on magnet § Leave sample on magnet to minimize disturbing condensed bead pellet Synthesize 1st Strand cDNA Preparations: § Thaw 1 tube of 1st Strand Master Mix & Superscript III, vortex briefly, centrifuge § Add 50µl Superscript III to 1 tube 1st Strand Master Mix (1:7 ratio if mixing less) § Mix gently, centrifuge briefly, label as “SS added on date”, keep on ice § If more than 6 freeze/thaw cycles anticipated aliquot into smaller volumes o Leave sample on magnet, DO NOT DISTURB condensed bead pellet o Transfer supernatant (fragmented, primed mRNA) to new labeled tube o Add 8µl 1st Strand MM + SuperScript III Mix, pipet 6x gently to mix, cap & flick mix § Re-freeze 1st Strand MM + SS III Mix immediately after use o Thermocycle d. 1st Strand (25oC 10 m→42oC 50 m→70oC 15 m→10o mRNA-Seq Page 2 of 7. Date:______________________ PI/Project/Sample Name(s):__________________________________________ cDNA – Synthesize 2nd Strand: Preparations: § Thaw 1 tube 2nd Strand Master Mix & centrifuge briefly § Thaw Re-Suspension Buffer § Vortex & centrifuge once thawed § invert AMPure XP Bead Stock (from 4oC) to mix thoroughly, pipet sufficient working aliquot for protocol, return stock to 4oC § vortex working aliquot of beads vigorously to thoroughly mix § Review & follow Protocol for Handling AMPure XP Beads § Chill thermocycler to 16oC (e. 2nd Strand recipe) § Mix fresh 70% EtOH o o o o o o o o o o o o o o o o o o Add 25µl 2nd Strand Master Mix, pipet 6x gently to mix, cap & flick mix Incubate on thermocycle e. 2nd Strand (16oC 60 m→25oC ∞) Remove from thermocycle as soon as 60 min complete, let stand at RT Vortex AMPure XP Beads to mix well Add 90µl well-mixed beads to 50µl ds cDNA, cap, invert &/or flick to mix Incubate 5 m @ RT, Condense beads into pellet on magnet ~3 m § Leave sample on magnet, DO NOT DISTURB condensed bead pellet Remove & discard supernatant - DO NOT DISTURB BEAD PELLET! (DNDBP!) Add 200µl 70% EtOH, incubate 30 s, remove & discard supernatant – DNDBP! Add 200µl 70% EtOH, incubate 30 s, remove & discard supernatant– DNDBP! Allow pellet to air dry @ RT on magnet, up to 15 m Add 26.5µl Re-Suspension Buffer, pipet to gently elute sample Incubate @ RT 2 m Condense beads on magnet until solution clears, ~3 m Transfer clear supernatant with ds cDNA into new, labeled tube Nanodrop & calculate recovery determine normalized ng amount to continue based on sample w/ lowest concentration calculate µl volume/sample for normalized ng amount µl/sample = ng / nanodrop reading (ng/µl) label aliquots with sample name, date, ds cDNA, & freeze Sample Nanodrop (ng/µl) Recovery (ng) Recovery % 1ST SAFE STOPPING POINT! ds cDNA samples can now be safely stored at -15oC to -80oC. mRNA-Seq Page 3 of 7. µl/sample Date:______________________ PI/Project/Sample Name(s):__________________________________________ Double Stranded cDNA Library Preparation End Repair: Preparations: § Thaw 1 tube of End Repair Mix & Re-Suspension Buffer § Thaw ds cDNA samples (from 1st Safe Stop) § Briefly vortex & centrifuge once thawed § Bring AMPure XP Beads to RT(from 4oC) & vortex vigorously to thoroughly mix § Review & follow Protocol for Handling AMPure XP Beads § Preheat thermocycler to 30oC & pre-program the following: i. 30C-30m: 30oC for 30m→25oC ∞ ii. 37C-30m: 37oC for 30 m→25oC ∞ iii. 30C-10m: 30oC for 10m→25oC ∞ § calculate Re-Suspension Buffer volume to total 60µl µl/sample for normalized ng amount o o o o o o o o o o o o o o o µl Re-Suspension Buffer to total 60µl Bring sample volume to a total of 60µl with Re-Suspension Buffer Add 40µl End Repair Mix, pipet gently &/or cap & flick to mix Thermocycle i. 30C-30m (30oC for 30m→25oC ∞) Vortex AMPure XP Beads to mix well Add 160µl well mixed Beads pipet gently to mix, cap, flick to mix Incubate 5 m RT, Condense beads into pellet on magnet ~3 m Leave sample on magnet, DO NOT DISTURB condensed bead pellet Remove & discard supernatant - DO NOT DISTURB BEAD PELLET! (DNDBP!) Add 200µl 70% EtOH, incubate 30 s, remove & discard supernatant – DNDBP! Add 200µl 70% EtOH, incubate 30 s, remove & discard supernatant– DNDBP! Allow pellet to air dry @ RT on magnet, up to 15 m Add 18µl Re-Suspension Buffer, pipet to gently rinse ds cDNA from pellet Cap, flick to mix & incubate 2 m RT Condense beads on magnet until solution clears, ~3 m Transfer clear supernatant to new tube as sample name, date & ds cDNA-ER 2nd SAFE STOPPING POINT! End Repaired ds cDNA can be stored at -15oC to -80oC. mRNA-Seq Page 4 of 7. Date:______________________ PI/Project/Sample Name(s):__________________________________________ Double Stranded cDNA Library Preparation Adenylate 3’Ends: Preparations: § Thaw 1 tube of A-Tailing Mix, Re-Suspension Buffer & ds cDNA-ER samples § Pre-heat thermycycler to 37oC o Add 12.5µl A-tailing Mix to samples, cap & flick to mix o Incubate in thermocycler ii. 37C-30m (37oC for 30 m→25oC ∞) o Remove from thermocycler when complete & proceed immediately to Adapter Ligation Adapter Ligation: Preparations: § Select 1 RNA Adapter Index per sample & record in table below § Thaw appropriate tubes of RNA Adapter Index & 1 tube Stop Ligase Mix § Thaw ligase control (if used) § Bring AMPure XP Beads to RT(from 4oC) & vortex vigorously to thoroughly mix § Immediately prior to use remove DNA Ligase Mix from -15oC to -25oC storage o Add 2.5µl DNA Ligase Mix & 2.5µl Ligase Control (if used) or re-suspension buffer § Return DNA Ligase Mix to -15oC to -25oC storage immediately after use o Add 2.5µl of selected RNA Adapter Index, pipet gently, cap & flick to mix o Incubate on thermocycle iii. 30C-10m (30oC for 10m→25oC ∞) o As soon as complete remove from thermocycler & Add 5µl Stop Ligase Mix, cap & flick o Vortex AMPure XP Beads to evenly disperse & add 42µl, pipet gently, cap & flick to mix o Incubate 5 m RT, Condense beads into pellet on magnet ~3 m § Leave sample on magnet, DO NOT DISTURB condensed bead pellet o Remove & discard supernatant - DO NOT DISTURB BEAD PELLET! (DNDBP!) o Add 200µl 70% EtOH, incubate 30 s, remove & discard supernatant – DNDBP! o Add 200µl 70% EtOH, incubate 30 s, remove & discard supernatant– DNDBP! o Allow pellet to air dry @ RT on magnet, up to 15 m o Add 12µl Re-Suspension Buffer, pipet to gently rinse ds cDNA from pellet o cap, flick to mix & incubate for @ RT for 2 m o Condense beads on magnet until solution clears, ~3 m o Transfer clear supernatant to new tube as sample name, date & ds cDNA-library o Nanodrop, calculate recovery & volume to normalize amount/sample for PCR input Sample Adapter Nanodrop (ng/µl) ds cDNA Recovery Vol to PCR Index # (ng) % (µl) mRNA-Seq Page 5 of 7. Date:______________________ PI/Project/Sample Name(s):__________________________________________ PCR Enrich Fragments: Preparations: § Thaw 1 tube each of PCR Master Mix, PCR Primer Cocktail & sample § Centrifuge all briefly § Bring AMPure XP Beads to RT(from 4oC) & vortex vigorously to thoroughly mix § Pre-heat thermocycler to 100 oC &pre-program PCR: 98oC for 30 s → 8-12 cycles of 98oC for 10 s→ 60oC for 30 s→ 72oC for 30 s→ then → 72oC for 5 m→10oC ∞ o Equalize volumes of normalized samples to 20µl each Sample Vol for normalized amt Vol to total 20µl o o o o o o o o o o o o o o o Add 5µl PCR Primer Cocktail Add 25µl PCR Master Mix, cap & flick to mix, centrifuge briefly Amplify on thermocycle PCR (as above) Vortex AMPure XP Beads & add 40µl beads (0.8x sample volume) pipet gently, cap, flick mix Incubate 15 m RT, Condense beads into pellet on magnet ~3 m § Leave sample on magnet, DO NOT DISTURB condensed bead pellet Remove & discard supernatant - DO NOT DISTURB BEAD PELLET! (DNDBP!) Add 200µl 70% EtOH, incubate 30 s, remove & discard supernatant – DNDBP! Add 200µl 70% EtOH, incubate 30 s, remove & discard supernatant– DNDBP! Allow pellet to air dry @ RT on magnet, up to 15 m Add 16.5µl Elution Buffer, pipet gently to rinse DNA from pellet cap, flick to mix & incubate for @ RT for 2 m Condense beads on magnet until solution clears, ~3 m Transfer clear supernatant to new tube labeled with sample name, date & library Nanodrop, calculate recovery Nanodrop (ng/µl) DNA (ng) sample 4th Safe Stop Point: store samples between -15oC to -80oC. mRNA-Seq Page 6 of 7. Date:______________________ PI/Project/Sample Name(s):__________________________________________ Validate Libraries - Experion DNA chip: o See Experion DNA protocol o For single-read libraries final product should band at ~260bp. o o o o o o o Quantify Libraries – Kappa Quant. qPCR: Dilute samples 1:1000 with EB Prepare the following recipe X total # of sample replicates & 6 standards +10% - 12µl KAPA SYNBR FAST QPCR Master Mix - 4µl diH2O Set-up 96-well plate map as needed & aliquot 16µl above recipe/well to be used Add 4µl of each diluted sample & standard in triplicate wells, pipet gently to mix Run qPCR thermocycle protocol 95oC for 5 m→ 35 cycles of: 95oC for 30 s→60oC for 45 s Confirm samples in line with standards Use absolute quantification to calculate library concentrations to load on flow cell Cluster Flow Cell o Dilute samples as needed based on Kappa Quantification & desired final flow cell cluster densities o See cBOT workflow protocol Load flow cell on GA or HiSeq mRNA-Seq Page 7 of 7.