Oligose - Primers Qiagen Dneasy Polymerase Chain Reaction What Does it all Mean? Maria Brown October 22, 1009.

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Presentation transcript:

Oligose - Primers Qiagen Dneasy Polymerase Chain Reaction What Does it all Mean? Maria Brown October 22, 1009

Oligose (Stock) Integrated DNA Technologies http://www.idtdna.com/Home/Home.aspx Sequence: 12Sai 5’ - AAA CTA GGA TTA ACC CTA TTA T-3” Amount in solid form (33.9 nMoles) Sequence 12Sbi 5’ - AAA AGC GAC GGG CGA TCT GT - 3” Amount in solid form (30.8 nMoles)

Oligose Dilution (Stock) Sai Sbi 33.9 nMoles 30.8 nMoles To convert to picomoles /uL ADD 1000 uL Sai Sbi 33.9 picomoles/uL 30.8 picomoles/uL GUARD FOR LIFE!

“Working Stock” Rule: what you want x vol. want what you have To make 12Sai working stock: 15 pmol/uL x 200 uL = 88.49 uL (12Sai Primer) 33.9 pmol/uL Want 200 uL: 200 uL – 88.49uL = 111.51 uL dH2O 88.49 ul 12Sai + 111.51 uL dH2O = “Working Stock”

Primer Master Mix To Make a Master Mix for 50 Rxn’s: Want 22.5 uL per Rxn 50Rxn’s x 22.5 uL = 1125 uL (total volume) Need: 20uL Sai + 20uL of Sbi 1125 uL – 40 uL Sai/Sbi = 1085 dH2O

Extracting DNA (mtDNA) Best results are obtained with fresh material or material that has been frozen. Cut and mash a tissue sample. Suitable samples may be as little as 100 cells to as much as 5 million cells.

Lysis – Breaking Cells & DNA Purification Buffers ATL (lysis buffer)- breaks the cells open Proteinase K - used to digest (remove) protein that might degrade the DNA or RNA during purification. Samples must be incubated at 57C for 1 hour before adding AL (additional lysis buffer)and ETOH.

Precipitating the DNA This is done when pure ETOH (96 – 100%) is added. DO NOT use denatured alcohol. DNA is insoluable in ETOH and it will aggregate together forming a “pellet” after centrifugation. http://www.youtube.com/v/IgVQhhZtoVw&hl=en&fs=1

Washing the DNA Washing the DNA is accomplished by adding Buffers AW1 and AW2 followed by centrifugation.

Elution (Removal/Separation Stage) Purified DNA is eluted from the Dneasy Mini spin filter column with buffer AE. This can be done in one or two successive steps. Centrifugation of the tube with the DNA embedded in the filter will pull the elution buffer through the matrix and the collection tube. Buffer AE (10mMTris-Cl, 0.5 mM EDTA, pH 9.0) for optimal DNA yield

PCR Ready Add 22.5 uL of Primer Master Mix Add 2.5 uL of Extracted/Purified/Eluted DNA = (PCR-Ready)

Ploymerase Chain Reaction (PCR) a technique to amplify a single or few copies of a piece of DNA across several orders of magnitude, generating thousands to millions of copies of a particular DNA sequence. The method relies on thermal cycling, consisting of cycles of repeated heating and cooling of the reaction for DNA melting and enzymatic replication of the DNA. Primers (short DNA fragments) containing sequences complementary to the target region along with a DNA polymerase (after which the method is named) are key components to enable selective and repeated amplification. As PCR progresses, the DNA generated is itself used as a template for replication, setting in motion a chain reaction in which the DNA template is exponentially amplified. http://vodpod.com/watch/1104084-pcr

Thermocycler – “BUGS” Settings: 90 Minutes 32 cycles of: 94C denaturing for 30 seconds 52C primer annealing for 30 seconds 72C primer extension for 40 seconds * Can set to run overnight and run Gel next day

Gel Electrophoresis 2% Agarose Gels 2 Log DNA Ladder (New England Biolabs) http://www.youtube.com/watch?v=IWZN_G_pC8U&feature=youtube_gdata

PCR Results E. Berenice Primers + C 40T 41L 42T 2 Log Ladder 40 L 42L

Scientists for Better PCR http://video.search.yahoo.com/search/video;_ylt=A0SO8ZnLhOBKZw0BS8P7w8QF;_ylu=X3oDMTBncGdyMzQ0BHNlYwNzZWFyY2gEdnRpZAM-?p=PCR+song&fr=yfp-t-156&ei=utf-8&n=21&tnr=21

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