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{AutoGenFlex 3000}
I.
Purpose: To extract and purify genomic
DNA from mouse tail and other types of animal tissues.
II.
Chemical
Principal: Proteinase
K/phenol extraction method.
III.
Pretreatment of Mouse Tail:
A.
Cut 5 - 10
mm of tail (about 10 - 30 mg).
B.
Place tail
in 500l of a buffered Proteinase K solution
(250l
of AGF TD-M1 including 0.4mg/ml Proteinase K and 250l of AGF TD-M2).
C.
Incubate
at 37C - 55C for 6 hours to overnight.
IV.
Protocol Parameters:
A.
Sample
Volume: 0.5ml of digest solution.
B.
Maximum
Number of Samples: 40 samples per run (AutoGenFlex
3000).
C.
Processing
Time: 3.4 hours for 40 samples (Includes 1 hour drying time)
D.
Yield: 20 - 60 g
of purified DNA per 10 - 30 mg of mouse tail.
E.
Quality:
Typical OD260/280 values are
1.8
The DNA is RNA
free and can be used directly in downstream processes such as
fluorescence DNA sequencing, PCR, Southern blotting
and restriction endonuclease digestions.
IV.
Running the Protocol:
A.
Load
Reagents and Samples
B.
Select a
Protocol
C.
Enter
Number of Samples
D.
Start
the Run
V.
Example of genomic DNA obtained from mouse tail.
A
10 mm sample (about 30mg) was pre-treated with proteinase K and loaded
onto the AutoGen system for purification.
Approximately
2 mg
DNA per mg of tissue was obtained with a purity of OD260/280 =
1.8 to 1.9.
VI.
Extraction
and Purification Process:
| Process Site |
Purpose |
System Process |
| 1. Manual |
Digest Proteins |
Mix Proteinase K with Reagents
AGF TD-M1 and AGF TD-M2 and add to sample, outside of the instrument. |
| 2. Automated |
Precipitate Protein |
Add Reagent AGF TD-R7,
mix and centrifuge. Transfer supernatant to DNA tube. |
| 3. Automated |
Precipitate DNA |
Add Reagent AGF TD-R4, agitate,
centrifuge, discard supernatant. |
| 4. Automated |
Wash DNA |
Add Reagent AGF TD-R5, mix, centrifuge,
discard supernatant. Repeat several times. |
| 5. Automated |
Evaporate Alcohol |
Transfer DNA tube to incubation
rack. |
| 6. Automated |
Resuspend DNA |
Add Reagent AGF TD-R3, mix, and
centrifuge. |
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