Hosuk:LabNotes/2013-8-5: Difference between revisions
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====2nd try with 90bp custom oligo==== | ====2nd try with 90bp custom oligo==== | ||
=====Template design==== | =====Template design===== | ||
*Sequence : /5Phos/CCCGATATCCGACGGTAGTGTGTCTTGCGTGCGATACGGAGTATCTACTTCGTCGCGTCAGACCATCGGAATACGTCGTTGACTGCGTTC | *Sequence : /5Phos/CCCGATATCCGACGGTAGTGTGTCTTGCGTGCGATACGGAGTATCTACTTCGTCGCGTCAGACCATCGGAATACGTCGTTGACTGCGTTC | ||
*RCA probe sequence : ACACTACCGTCGGATATC | *RCA probe sequence : ACACTACCGTCGGATATC | ||
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=====Circularization==== | =====Circularization===== | ||
*CircLigase II reaction with 50pmole input DNA | *CircLigase II reaction with 50pmole input DNA | ||
**6 hr reaction | **6 hr reaction | ||
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=====Rolony generation==== | =====Rolony generation===== | ||
*Add template, incubate 15min | *Add template, incubate 15min | ||
*Run RNase H +Riboshredder for 1hr at 60C. | *Run RNase H +Riboshredder for 1hr at 60C. |
Revision as of 03:47, 6 August 2013
Test Decoding probes using custom pre-circularized oligos
Previous try
- Alan and I have tried decoding pre-circularized oligos made from Matt at 07/30/2013.
- I added oligos in fixed cells on MatTek glass-bottom dish, and ran RCA to generate rolonies.
- However the signal wasn’t seen any FL signal after hybridizing decoding probes.
- We suspected that the amount of oligos might not enough (The actual concentration or amount of the oligos was unknown).
- So I've ordered 90bp ssDNA from IDT which has 3 sites for decoding probes and 1 site for RCA probes.
2nd try with 90bp custom oligo
Template design
- Sequence : /5Phos/CCCGATATCCGACGGTAGTGTGTCTTGCGTGCGATACGGAGTATCTACTTCGTCGCGTCAGACCATCGGAATACGTCGTTGACTGCGTTC
- RCA probe sequence : ACACTACCGTCGGATATC
- Decoding probes for this experiment
- dcProbe1-Cy3 : Cy3-GTCTTGCGTGCGATACGGAGTA
- dcProbe2-Cy3 : Cy3-TCTACTTCGTCGCGTCAGACCA
- dcProbe4-FAM : FAM-TCGGAATACGTCGTTGACTGCG
File:Sequence Template Probes.png
Circularization
- CircLigase II reaction with 50pmole input DNA
- 6 hr reaction
- Circ. reaction lane has no band near 90bp, it seemed circularized.
File:CircLigaseII 20uL Gel.png
Rolony generation
- Add template, incubate 15min
- Run RNase H +Riboshredder for 1hr at 60C.
- Run RCA for 20hr at 30C
Run Cycle with 3 probes
- Procedure : Hybridize Probe1-Cy3 --> Image --> Strip --> Image --> Probe4-FAM --> Image --> Strip --> Image --> Probe2-Cy3 --> Image --> …
- Cy3 signal looked good, but FAM signal was weak, and fewer numbers.
- Second Cy3 probes were fewer than first one, it was because of less non-specific binding due to Formamide…??
- We'll try using confocal for FAM signal imaging, and try Matt's oligo one more time.