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Lab meeting 13.03.31  1 st Plasmid preparation of K562, Hela, IM9 -Midi Kit Quiagen  2 nd Prepare control sample within the plasmid preparation process.

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Presentation on theme: "Lab meeting 13.03.31  1 st Plasmid preparation of K562, Hela, IM9 -Midi Kit Quiagen  2 nd Prepare control sample within the plasmid preparation process."— Presentation transcript:

1 Lab meeting 13.03.31  1 st Plasmid preparation of K562, Hela, IM9 -Midi Kit Quiagen  2 nd Prepare control sample within the plasmid preparation process Each sample of control was prepared as following: K1: cleared lysate containing supercoiled and open circular plasmid DNA & degraded RNA (240µl) K2: second wash fraction, which ensure that the resin is completely cleared of RNA & other contaminants, leaving only pure plasmid DNA on the column (400µl) K3: the eluate containing pure plasmid DNA with no other contaminating nucleic acids (100µl) Prepare same control sample for Hela (H1, H2, H3) and IM9 (I1, I2, I3)

2 K1K2K3

3 Result of control Concentration: K1: 225 ng/µl H1: 178 ng/µl I1: 200 ng/µl K2: 2.7 ng/µl H2: 1.1 ng/µl I2: 3.3 ng/µl K3: 21 ng/µl H3: 20 ng/µl I3: 14 ng/µl A260/280 : 2.012 A260/230: 2.011 pcDNA3.1 + cDNA U2AF1: 5989 bp K1 K2 K3 H1 H2 H3 I1 I2 I3 Ladder K562HelaIM9 5000bp 1000bp

4 Result of plasmid preparation Plasmid formCell lineConcentration (ng/µl) Abs260/Abs280Abs260/Abs230Volume (µl) Open circular & supercoil form [pcDNA3.1+ cDNA U2AF1] K56220982.22.520 Hela24142.22.520 IM916812.142.4420

5 To create stable cell line  Linearize the pcDNA™3.1(+) vector Linearize the pcDNA3.1 + cDNA U2AF1 Source: http://tools.invitrogen.com/content/sfs/manuals/pcdna3_1_man.pdf

6 pcDNA3.1 digest with ScaI- blunt end

7 Dilute [pcDNA3.1+cDNA U2AF1] up to 20µl (1µg/µl) Linearize pcDNA3.1+cDNA U2AF1 by ScaI ScaI2µl 10X NEB buffer (No.3)10µl BSA3µl pcDNA3.1+cDNA (1µg/µl)20µl D.W15µl Total 50µl Incubation time: O/N Incubation temp: 37 °C

8 Plasmid formCell lineConcentration (ng/µl) Abs260/Abs280Abs260/Abs230Volume (µl) K5622402.02.415 Hela2002.02.415 IM92002.02.415 Result of plasmid linearization by ScaI Ladder K562 Hela IM9 pcDNA3.1 + cDNA U2AF1: 5989 bp


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