Post Your Answer
6 years ago in Discussion By Yashti Iyer
Techniques to isolate DNA from the blood
I want to isolate DNA from the blood. Which all techniques can I use for this purpose and how do I do it
All Answers (4 Answers In All)
By Zeba Malik Answered 6 years ago
The fresh/frozen blood, after thawing, should be resuspended in nine volume of Buffer A 10 mL 1 M Tris HCl (pH 7.6), (109.5 g sucrose , 1% Triton-X-100, 5 mL 1 M MgCl2 ,) and must be kept on ice for 10- 15 min. This is then followed by 10 min centrifuge (10,000 rpm at 4 o C). The supernatant must be discarded and nuclei pellets should be resuspended in 1.8 mL of Buffer B (75 mM NaCl, 20 µg/mL pancreatic Ribonuclease A, 25 mM EDTA (pH 8.0),) and 150 µl of 20 µl Proteinase K (20 mg/mL and 10% SDS). The suspension must then be incubated overnight (56 o C) on low speed rocker/orbiter shaker in water bath. Saturated NaCl must be added and the sample must be vigorously mixed for around 15 min. This is then followed by spinning at 10,000 rpm (at 4 o C for 10 min). The supernatant should be then transferred to another 15 mL polypropylene tube, and also the pellets should be discarded. The DNA must be precipitated by mixing supernatant and you will obtain the desired result.
Reply to Zeba Malik
By Kamlesh Meena Answered 6 years ago
Reply to Kamlesh Meena
By Muhammad Umar Farooq Answered 6 years ago
Reply to Muhammad Umar Farooq
Reply to Yashti Iyer
Related Questions