Daniel:Notebook/ComboLock/2016-12-16
Overnight Capture (Started Yesterday)
Protocol
- Circularization
- Prepare 7X uL Phusion mix
- Add 20 uL Phusion mix to 20 uL of reaction
- Incubate at 60C for 2 hours
- Exonuclease Digestion
- Mix 12.5 uL Exo I (20U/uL) and 2.5 uL ExoIII (100U/uL)
- Add 2 uL to each sample, mix by swirling pipette tip
- Incubate for 1 hour at 37C
- Heat kill by incubating for 5 min at 95C
- Rolling Circle Amplification
- Prepare 7X Master mix according to table below
- Add 15 uL master mix to each tube
- Add sample to new reaction tubes according to following table; use template from both supernatant only and beads
- Incubate at 37C for 3 hours
- Incubate at 65C for 10 minutes;Hold at 10C until next step
- qPCR
- Make master mix according to following recipe
- 151.2 uL nfH2O
- 180 uL SYBR Fast
- 7.2 uL 10 uM AmpF
- Add 47 uL master mix to each well
- Add 2 uL sample and 1 uL appropriate Reverse Primer (1 uM) according to table
- Phosphorylation-MirrorC Probe B (PCCB-02)
- Set up reaction according to table
- Incubate at 37C for 30 min
- Heat kill enzyme with 15 minutes at 65C
- Template-Bead Binding
- Suspend 2 uL (8 ug) beads per sample in 100 uL wash buffer
- Apply magnet for 30 sec and remove supernatant
- Add 2 uL 10 uM template oligo per sample to bead solution; incubate at RT for 5 min
- Wash beads with 100 uL wash buffer; vortex to suspend; apply magnet and remove supernatant
- C Probe Hybridization
- Combine 1 uL of each C probe (10 uM stock) and 3 uL bead wash buffer into a 0.2 mL tube
- Heat C probes to 90C for 5 min; Chill probes on ice to quench
- Add 5 uL probe mixture to beads
- Incubate at 40C for 1 hour with agitation; start part 3 after incubation begins
- Wash beads with 100 uL wash buffer; apply magnet and remove supernatant
- Repeat wash step above
- Add 100 uL cold Low Salt Buffer; apply magnet and remove supernatant
- Phosphorylation
- Set up reaction according to table
Reagent | Stock Conc | Final Amount | 1x Vol (uL) | MM Vol (7x) (uL) |
NAD+ | 5 mM | 40 nmol | 8 | 56 |
dNTP | 1 mM | 600 pmol | 0.6 | 4.2 |
Betaine | 5 M | 15 umol | 3 | 21 |
10X AmpLigase Buffer | 10X | 1X | 2 | 14 |
Amp Ligase | 5 U/uL | 10 U | 2 | 14 |
Phusion HF DNA Polymerase | 2000 U/mL | 6.4U | 3.2 | 22.4 |
nf H2O | 1.2 | 8.4 | ||
Total | 20 | 140 |
Reagent | uL Added | Master Mix (7X) |
Template | 5 | NA |
RCA Primer (100 uM) | 2.5 | 17.5 |
dNTP (1 mM) | 0.8 | 5.6 |
10X Buffer | 2 | 14 |
Phi29 | 1 | 7 |
nfH2O | 8.7 | 60.9 |
Total | 20 | 105 |
Sample | Condition | Fraction | Lane | AmpR Index | Sample Vol (uL) | 2X Kapa SYBR qPCR MM | 10 uM Forward Primer | 10 uM Reverse Primer | H2O | Total Volume (uL) |
Sample 1A | Sample | Supernatant | A1 | 20 | 2 | 25 | 1 | 1 | 21 | 50 |
Sample 1B | Sample | Supernatant | A2 | 20 | 2 | 25 | 1 | 1 | 21 | 50 |
Sample 2A | No Template | Supernatant | A3 | 21 | 2 | 25 | 1 | 1 | 21 | 50 |
Sample 2B | No Template | Supernatant | A4 | 21 | 2 | 25 | 1 | 1 | 21 | 50 |
Sample 3A | No C Probe | Supernatant | A5 | 22 | 2 | 25 | 1 | 1 | 21 | 50 |
Sample 3B | No C Probe | Supernatant | A6 | 22 | 2 | 25 | 1 | 1 | 21 | 50 |
Sample 1A | Sample | Beads | A1 | 20 | 2 | 25 | 1 | 1 | 21 | 50 |
Sample 1B | Sample | Beads | A2 | 20 | 2 | 25 | 1 | 1 | 21 | 50 |
Sample 2A | No Template | Beads | A3 | 21 | 2 | 25 | 1 | 1 | 21 | 50 |
Sample 2B | No Template | Beads | A4 | 21 | 2 | 25 | 1 | 1 | 21 | 50 |
Sample 3A | No C Probe | Beads | A5 | 22 | 2 | 25 | 1 | 1 | 21 | 50 |
Sample 3B | No C Probe | Beads | A6 | 22 | 2 | 25 | 1 | 1 | 21 | 50 |
NTC | qPCR Primers Only | A7 | 23 | 2 | 25 | 1 | 1 | 23 | 50 |
Version 2 Oligos
The version 2 oligos have several changes. The first is that they are shorter. The C probes have a 20bp target matching region (from 24bp) and the adapters are 15bp (from 18bp). This makes the C probes exactly 60bp which means they are regular oligos (not Ultramers) and can be received one day after ordering. A second improvement is to include the idea of the lock oligo. Note, this is not a Lock nucleic acid, it's just a name. The lock oligo fits in between the two C probes, spanning the gap between them. In conjunction with the latch oligo, this theoretically means that we can ligate the C probes together without using polymerase. This will allow the padlock probe to act as a standard gap-fill padlock (instead of 2 small gaps) since it is one medium sized gap.
Sample Matrix
Sample | Condition |
Sample 1 (AB) | Normal |
Sample 2 (AB) | No Template |
Sample 3 (AB) | No C probes |
Sample 4 (AB) | No phosphate activation |
Protocol
Reagent | Stock Conc | Final Conc./Amount | uL added |
T4 DNA Ligase Buffer | 10X | 1X | 2 |
ATP | 10 mM | 1 mM | 2 |
PCCB-02 | 10 uM | 150 pmol total | 10 |
T4 DNA Kinase | 10 U/uL | 10 U | 1 |
nfH2O | NA | NA | 5 |
Total | 20 |