Navigation Links
Protocol for RNA Isolation Using TRIzol Reagent with Phase Lock ,,, Gel-Heavy

Phase Lock Gel may be used in conjunction with TRIzol Reagent for the isolation of total RNA from cell and tissue samples. Increased yields are observed using this method, because the entire aqueous phase can be recovered without interphase contamination. Below is a protocol outlining the steps involved in RNA isolation with TRIzol Reagent and Phase Lock Gel-Heavy. For further details about TRIzol Reagent, please refer to TRIzol Reagent protocol.

IMPORTANT: When working with TRIzol Reagent, use appropriate protective clothing and work under a chemical fume hood.

  1. Homogenization:
    1. Tissues: Add 1 ml TRIzol Reagent per 50100 mg tissue and homogenize with a POLYTRON homogenizer. For 110 mg quantities of tissue, add 0.8 ml TRIzol Reagent and 0.2 ml 1 mg/ml mussel glycogen and homogenize.
    2. Cells grown in a Monolayer: Lyse cells by adding 1 ml TRIzol Reagent per 10 cm2 area of culture dish. Pipette suspension several times to disrupt cells. For 102104 cells, add 0.8 ml TRIzol Reagent and 0.2 ml 1 mg/ml mussel glycogen and homogenize.
    3. Cells grown in Suspension: Pellet cells by centrifugation. Do not wash cell pellet. Add 1 ml TRIzol Reagent per 510 x 106 animal, plant, or yeast cells or 1 x 107 bacterial cells. Resuspend pellet by pipetting to lyse cells. For 102104 cells, add 0.8 ml TRIzol Reagent and 0.2 ml 1 mg/ml mussel glycogen and homogenize.
  2. Pre-spin the appropriate sized Phase Lock Gel-Heavy tubes briefly to collect gel on tube bottoms (1500 x g for 30 seconds is sufficient to collect gel at tube bottoms).
  3. Add cell lysate to the tubes containing pre-spun Phase Lock Gel-Heavy and incubate 5 minutes at 1530C.
  4. Add 0.2 ml chloroform (or chloroform-isoamyl alcohol) per 1 ml TRIzol Reagent initially used. Cap tubes and shake vigorously for 15 seconds. DO NOT VORTEX!
  5. Centrifuge samples at no more than 12,000 x g for 10 minutes at 28C.
    NOTE: 15 ml and 50 ml PLG-H screw-cap tubes should be centrifuged at or below 2000 x g.
  6. Examine phasing. Clear, aqueous phase should be entirely atop Phase Lock Gel. The phenol-chloroform phase and cloudy interphase should be below Phase Lock Gel layer. If this is not the case, add another 0.2 ml chloroform (or chloroform-isoamyl alcohol) per 1 ml TRIzol Reagent used initally and shake vigorously. Repeat centrifugation and re-examine phasing.
  7. Transfer aqueous phase containing RNA to a fresh tube (aqueous phase may be decanted).
  8. Precipitate RNA by adding 0.5 ml Isopropyl alcohol per 1 ml TRIzol Reagent used initially. Mix samples by repeated inversion. Allow samples to incubate at 1530C for 10 minutes. Centrifuge samples for 10 minutes at no more than 12,000 x g, 28C. RNA pellet should be visible on side and bottom of tube.
  9. Decant supernatant. Add 1 ml 75% ethanol per 1 ml TRIzol Reagent used initially to wash the RNA pellet. Mix samples to dislodge pellet, using a vortex if necessary. Centrifuge samples at no more than 7,500 x g for 5 minutes at 28C.
  10. Carefully decant supernatant. Briefly air-dry or vacuum-dry the RNA pellet to remove residual ethanol (5 10 minutes). Do not overdry pellet by centrifugation under vacuum as this will make resuspension more difficult. Dissolve RNA pellet in Molecular Biology Grade water, incubating at 5560C for 10 minutes to facilitate dissolution.



Page: All 1 2 3

Related biology technology :

1. New Protocols for Isolating High- Molecular-Weight Genomic DNA
2. Eppendorf Multiporator Transfection Protocols for Eukaryotic Cells
3. Lambda DNA Extraction Protocol
4. M13/Phagemid DNA Extraction Protocol
5. Mouse Tail Genomic DNA Isolation Protocol(1)
6. Genomic DNA Isolation Protocol(1,2,3)
7. Basic Plasmid DNA Isolation Protocol
8. RNA-free Plasmid DNA Isolation Protocol
9. Lambda DNA Extraction Protocol
10. Eppendorf Multiporator Transfection Protocols for Eukaryotic Cells
11. M13/Phagemid DNA Extraction Protocol
Post Your Comments:

(Date:11/30/2015)... ... November 30, 2015 , ... Global Stem Cells Group announced the opening ... the cities of Arica and Iquique in northern Chile. The facilities are part of GSCG’s ... most advanced protocols and techniques in stem cell medicine to patients from around the world. ...
(Date:11/30/2015)... , Nov. 30, 2015 Harvard ... ), a biotechnology company developing bioengineered organ implants ... written notification from The NASDAQ Stock Market that ... price requirements. The letter noted that as a ... common stock having exceeded $1.00 per share for ...
(Date:11/30/2015)... DIEGO , Nov. 30, 2015 Human ... that the company has acquired Cypher Genomics, Inc., a ... robust human genomic interpretation software solutions. The ... will join HLI including Cypher CEO and Co-founder, Ashley ... of HLI,s Pediatric Business.  Financial details of the deal ...
(Date:11/30/2015)... and MAGDEBURG, Germany , November ... NeuroRehabilitation (ECNR) in Vienna, Austria ... European Congress of NeuroRehabilitation (ECNR) in Vienna, ... --> NovaVision, a wholly owned subsidiary of Vycor Medical, ... version of its Internet-delivered NovaVision Therapy Suite at the ...
Breaking Biology Technology:
(Date:11/12/2015)...  Arxspan has entered into an agreement with ... use of its ArxLab cloud-based suite of biological ... will support the institute,s efforts to electronically manage ... internally and with external collaborators. The ArxLab suite ... Institute,s electronic laboratory notebook, compound and assay registration, ...
(Date:11/10/2015)... 2015  In this report, the biomarkers ... product, type, application, disease indication, and geography. ... are consumables, services, software. The type segments ... efficacy biomarkers, and validation biomarkers. The applications ... development, drug discovery and development, personalized medicine, ...
(Date:11/9/2015)... Calif. , Nov. 9, 2015  Synaptics Inc. ... interface solutions, today announced broader entry into the automotive ... solutions that match the pace of consumer electronics human ... biometric sensors are ideal for the automotive industry and ... Europe , ...
Breaking Biology News(10 mins):