Part:BBa_K4245208:Design

hsa-miR-208a-3p RCT Padlock Probe

Assembly Compatibility:

• 10
  COMPATIBLE WITH RFC[10]
• 12
  COMPATIBLE WITH RFC[12]
• 21
  COMPATIBLE WITH RFC[21]
• 23
  COMPATIBLE WITH RFC[23]
• 25
  COMPATIBLE WITH RFC[25]
• 1000
  COMPATIBLE WITH RFC[1000]

Design Notes

hA padlock probe, which is often 30-150 nucleotides in length, is a single-stranded DNA sequence designed to recognize a specific target sequence. The “arms” of a padlock probe are the ends of the ssDNA that are complementary to a specific target sequence. The middle sequence (the sequence between the arms) can be specifically designed to perform a function once amplified. (Nilsson et al., 1994)
Lambert iGEM found three specific miRNAs — hsa-miR-1-3p (BBa_K4245006), hsa-mir-133a-3p (BBa_K4245009), and hsa-miR-208a-3p (BBa_K4245011)— to be upregulated in correlation to CAD (Kaur et al., 2020). For hsa-miR-208-3p, we designed two complementary arms, BBa_K4245105, the 3' arm for hsa-miR-208a-3p and BBa_K4245112, the 5' arm for hsa-miR-208a-3p. For the reporter, we decided on BBa_K3380153, the Broccoli fluorescent RNA aptamer, for its short length and function similar to GFP. In order to stabilize the folding of the Broccoli fluorescent RNA aptamer, we added BBa_K4245160, the padlock spacer sequence.

References

Kaur, A., Mackin, S. T., Schlosser, K., Wong, F. L., Elharram, M., Delles, C., Stewart, D. J., Dayan, N., Landry, T., & Pilote, L. (2019). Systematic review of microrna biomarkers in acute coronary syndrome and stable coronary artery disease. Cardiovascular Research, 116(6), 1113–1124. https://doi.org/10.1093/cvr/cvz302 Nilsson, M., Malmgren, H., Samiotaki, M., Kwiatkowski, M., Chowdhary, B. P., & Landegren, U. (1994). Padlock probes: Circularizing oligonucleotides for localized DNA detection. Science, 265(5181), 2085–2088. https://doi.org/10.1126/science.7522346