Description
The Hieff Superfast DNA Methylation Bisulfite Kit (Column-based) rapidly converts unmethylated cytosines in DNA samples to uracil, while leaving methylated cytosines unchanged. During high-temperature bisulfite treatment, double-stranded DNA denatures into single strands. In the presence of HSO3-, cytosine residues undergo deamination and are converted into uracil, with methylated cytosines remaining unaltered. In subsequent PCR amplification, uracil is replaced by thymine (T). The conversion process takes only 5 minutes, accommodating DNA input ranging from 100 pg to 2 μg, and achieves a conversion efficiency of ≥99% for unmethylated cytosines. The converted DNA is suitable for downstream applications such as PCR amplification and NGS sequencing.
Feature
Low Input: Suitable for converting samples ranging from 100 pg to 2 μg
Short conversion time: approximately 5 minutes.
Minimal Sample Damage: Maintaining good sample integrity post-conversion.
High Conversion Efficiency: Conversion rate ≥99%, high conversion rates in high-GC regions with a low false positive rate.
Suitable for rare samples, such as single-cell DNA methylation conversion.
Capable of methylation conversion of RNA samples.
Product Components
No. |
Component name |
12225ES10 |
12225ES50 |
12225-A |
Conversion Reagent |
2 mL×1 |
3.3 mL×3 |
12225-B |
Wash Buffer |
1.1 mL×1 |
5.5 mL×1 |
12225-C |
Desulphonation Buffer |
2.2 mL×1 |
11 mL×1 |
12225-D |
Elution Buffer |
500 μL×1 |
1.5 mL×1 |
12225-E |
DNA Column |
10 |
50 |
12225-F |
Collection Tube |
10 |
50 |
Figure
Shipping and Storage
Store 12225-A conversion solution at room temperature, protected from light. Store other components at room temperature. The shelf life is 12 months.
Note:
Instructions
Preparation of reagents and consumables: 1.5 mL sterile centrifuge tube, enzyme-free water, absolute ethanol, PCR tube;
l Bisulfite conversion:
1) Prepare the corresponding sterile PCR tube according to the number of samples to be tested, and prepare the reaction system according to the following table:
2) Transformation system
Component |
Volume |
DNA |
100 pg-2 μg (to 20 μL) |
Conversion Buffer |
180 μL |
Total volume |
200 μL |
Use a pipette to blow and mix the above system or vortex and mix it for 5 s, then centrifuge it for a short time, and centrifuge the reaction solution to the bottom of the PCR tube.
v Note: 1. At this time, the total volume of the reaction solution in the PCR tube is 200 μL. In order to make the transformation more complete, the reaction solution should be divided into equal parts and transferred to a new sterile PCR tube after blowing and mixing in step 2), and the transformation procedure should be run. After the conversion, the reaction solutions in the two PCR tubes were combined into the same purification column for purification.
2. If the sample volume is between 20 and 40 μL, reduce the volume of the transformation solution to maintain a total volume of 200 μL.
3. If the sample volume is 50 μL, 150 μL of the transformation solution is added, the total volume is maintained at 200 μL, and the transformation time is extended to 6-10 min.
3) Setting of CT conversion program
Temperature |
Time |
98 ℃ |
5 min |
4 ℃ |
∞ |
The PCR tube is placed on a PCR instrument with a preset program to carry out the reaction.
l Purification
1) Transfer 200 μL of the conversion solution to the Purification columns, centrifuge for 30-60 s 13000 g, discard the filtrate, and put the purification column into the Collection tubes again;
2) Add 100 μL of Wash Buffer into Purification Columns (confirm that absolute ethanol has been added), centrifuge for 30-60 s 13000 g, discard the filtrate, and put the purification column into the Collection tubes again;
3) Add 200 μL of Desulphonation Buffer into the Purification Columns , and allow the reaction to stand at room temperature for 20 min. After the reaction, centrifuge for 30-60 s 13000 g, discard the filtrate, and place the Purification Columns in the Collection tubes again;
4) Add 200 μL of the Wash Buffer to the Purification Columns, centrifuge for 30-60 s 13000 g discard the filtrate, and place the Purification columns in the Collection tubes again;
5) Repeat step 4) once;
6) Transfer the Purification Columns to the prepared 1.5 mL centrifuge tube, add 10-30 μL of Elution Buffer to the center of the filter membrane after opening the cover and drying, and collect the DNA after standing for 1 min at room temperature and centrifuging for 1 min at 13000 g;
7) Store the DNA temporarily at -20 ℃. For long-term storage, please store the DNA at -80 ℃ and avoid unnecessary repeated freezing and thawing.
Note: The purified transformation product can be directly used in the subsequent PCR reaction or sequencing process.