Description : The EZgeneTM Tissue RNA Kit provides an easy and fast method for isolating total RNA from tissues, cultured cells within 30 min. Only trace genomic DNA exists in the purified RNA, which can be eliminated by DNase I treatment (See detail in the protocol) when it is necessary. This kit purifies up to 100 µg of total RNA from eukaryotic cells or animal tissues. The purified RNA is ready for RT-PCR, Northern blotting, polyA+ RNA purification, nuclease protection, and in vitro translation. DNase I (optional) should be stored at -20°C. All other components can be stored at room temperature. All kit components are guaranteed for 12 months from the date of purchasing. Catalog# R6311-00 R6311-01 R6311-02 Preps 4 50 250 Buffer LY 2.4 mL 28 mL 135 mL Buffer RB 3 mL 30 mL 135 mL RNA Wash Buffer 2 mL 20 mL 3 x 24 mL DEPC-Treated ddH2O 500 µL 10 mL 30 mL ezBind Columns 4 50 250 Collection Tubes 8 100 500 DNase I (Optional)* 25 u 300 u 1500 u DNase Stop Buffer 200 µL 2.4 mL 12 mL Buffer LY contains chaotropic salts, which may form reactive compounds when combines with bleach. Do not add bleach or acidic solutions directly to the preparation waste, wear gloves and protective eyewear when handling. Prepare all components and get all necessary materials ready by examining this instruction booklet and become familiar with each steps. Note: Perform all steps including centrifugation at room temperature Problems Possible reasons Suggested Improvements Low A260/A280 ratios Protein contamination Do a Phenol:Chloroform extraction. Loss of total RNA (up to 40%) should be expected. Low A260/A280 ratios Guanidine Thiocyanate contamination Add 2.5 volumes of ethanol and 0.1M NaCl (final concentration) to precipitate RNA. Incubate for 30 min at -20°C. Centrifuge at 10,000 g for 15 min at 4°C. Resuspend the RNA pellet in DEPC-treated water. Low Yield RNA in sample degraded Freeze samples immediately in liquid nitrogen and store at -70°C after collect it. Low Yield The binding capacity of the membrane in the spin column was exceeded Use of too much tissue sample exceeding the binding capacity of spin column will cause the decreasing of total RNA yield. Low Yield Ethanol not added to buffer Add ethanol to the RNA Wash Buffer and DNase Stop Solution before purification. Genomic DNA contamination Too much total RNA sample was used in RT-PCR. Reduce total RNA amount used in RT-PCR to 50-100 ng. Genomic DNA contamination The sample may contain too much genomic DNA. Reduce the amount of starting tissue in the preparation of the homogenate. Most tissues will not show a genomic DNA contamination problem at 30 mg or less per prep. Reduce cell numbers to 1-2x105 or increase buffer volume and do multiple loadings to column. Operating protocal:Introduction
Storage and stability
Kit contents
*Solutions are not supplied. They could be purchased from Biomiga.
Safety information
Before starting
Important
Materials supplied by users
Trouble Shooting Guide
- Model: R6311-00
- Manufactured by: Biomiga